Merge branch 'master' into JAVA-25997
This commit is contained in:
panos-kakos
commit
de34619039
|
|
@ -1,7 +1,7 @@
|
|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xmlns="http://maven.apache.org/POM/4.0.0"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
xmlns="http://maven.apache.org/POM/4.0.0"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
<artifactId>apache-poi-3</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
|
|
|
|||
|
|
@ -1,43 +0,0 @@
|
|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project xmlns="http://maven.apache.org/POM/4.0.0"
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
<artifactId>aws-s3-update-object</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
<name>aws-s3-update-object</name>
|
||||
<description>Project demonstrating overwriting of S3 objects</description>
|
||||
<parent>
|
||||
<groupId>com.baeldung</groupId>
|
||||
<artifactId>parent-boot-2</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
<relativePath>../../parent-boot-2</relativePath>
|
||||
</parent>
|
||||
<dependencies>
|
||||
<dependency>
|
||||
<groupId>org.springframework.boot</groupId>
|
||||
<artifactId>spring-boot-starter-web</artifactId>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.springframework.boot</groupId>
|
||||
<artifactId>spring-boot-starter-test</artifactId>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>com.amazonaws</groupId>
|
||||
<artifactId>aws-java-sdk</artifactId>
|
||||
<version>${aws-java-sdk-version}</version>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
<build>
|
||||
<plugins>
|
||||
<plugin>
|
||||
<groupId>org.springframework.boot</groupId>
|
||||
<artifactId>spring-boot-maven-plugin</artifactId>
|
||||
</plugin>
|
||||
</plugins>
|
||||
</build>
|
||||
<properties>
|
||||
<aws-java-sdk-version>1.12.523</aws-java-sdk-version>
|
||||
</properties>
|
||||
</project>
|
||||
|
|
@ -1,13 +0,0 @@
|
|||
package com.baeldung.awss3updateobject;
|
||||
|
||||
import org.springframework.boot.SpringApplication;
|
||||
import org.springframework.boot.autoconfigure.SpringBootApplication;
|
||||
|
||||
@SpringBootApplication
|
||||
public class AwsS3UpdateObjectApplication {
|
||||
|
||||
public static void main(String[] args) {
|
||||
SpringApplication.run(AwsS3UpdateObjectApplication.class, args);
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -1,24 +0,0 @@
|
|||
package com.baeldung.awss3updateobject.controller;
|
||||
|
||||
import com.baeldung.awss3updateobject.service.FileService;
|
||||
import org.springframework.beans.factory.annotation.Autowired;
|
||||
import org.springframework.web.bind.annotation.*;
|
||||
import org.springframework.web.multipart.MultipartFile;
|
||||
|
||||
@RestController
|
||||
@RequestMapping("api/v1/file")
|
||||
public class FileController {
|
||||
|
||||
@Autowired
|
||||
FileService fileService;
|
||||
|
||||
@PostMapping("/upload")
|
||||
public String uploadFile(@RequestParam("file") MultipartFile multipartFile) throws Exception {
|
||||
return this.fileService.uploadFile(multipartFile);
|
||||
}
|
||||
|
||||
@PostMapping("/update")
|
||||
public String updateFile(@RequestParam("file") MultipartFile multipartFile, @RequestParam("filePath") String exitingFilePath) throws Exception {
|
||||
return this.fileService.updateFile(multipartFile, exitingFilePath);
|
||||
}
|
||||
}
|
||||
|
|
@ -1,80 +0,0 @@
|
|||
package com.baeldung.awss3updateobject.service;
|
||||
|
||||
import com.amazonaws.auth.AWSCredentials;
|
||||
import com.amazonaws.auth.AWSStaticCredentialsProvider;
|
||||
import com.amazonaws.auth.BasicAWSCredentials;
|
||||
import com.amazonaws.regions.Regions;
|
||||
import com.amazonaws.services.s3.AmazonS3;
|
||||
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
|
||||
import com.amazonaws.services.s3.model.*;
|
||||
import org.slf4j.Logger;
|
||||
import org.slf4j.LoggerFactory;
|
||||
import org.springframework.beans.factory.annotation.Value;
|
||||
import org.springframework.stereotype.Service;
|
||||
import org.springframework.web.multipart.MultipartFile;
|
||||
|
||||
import javax.annotation.PostConstruct;
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
import java.util.HashMap;
|
||||
import java.util.Map;
|
||||
|
||||
@Service
|
||||
public class FileService {
|
||||
|
||||
private static final Logger logger = LoggerFactory.getLogger(FileService.class);
|
||||
|
||||
public AmazonS3 amazonS3;
|
||||
|
||||
@Value("${aws.s3bucket}")
|
||||
public String awsS3Bucket;
|
||||
|
||||
@PostConstruct
|
||||
private void init(){
|
||||
AWSCredentials credentials = new BasicAWSCredentials(
|
||||
"AWS AccessKey",
|
||||
"AWS secretKey"
|
||||
);
|
||||
this.amazonS3 = AmazonS3ClientBuilder.standard()
|
||||
.withRegion(Regions.fromName("us-east-1"))
|
||||
.withCredentials(new AWSStaticCredentialsProvider(credentials))
|
||||
.build();
|
||||
}
|
||||
|
||||
public String uploadFile(MultipartFile multipartFile) throws Exception {
|
||||
String key = "/documents/" + multipartFile.getOriginalFilename();
|
||||
return this.uploadDocument(this.awsS3Bucket, key, multipartFile);
|
||||
}
|
||||
|
||||
public String updateFile(MultipartFile multipartFile, String key) throws Exception {
|
||||
return this.uploadDocument(this.awsS3Bucket, key, multipartFile);
|
||||
}
|
||||
|
||||
private String uploadDocument(String s3bucket, String key, MultipartFile multipartFile) throws Exception {
|
||||
try {
|
||||
ObjectMetadata metadata = new ObjectMetadata();
|
||||
metadata.setContentType(multipartFile.getContentType());
|
||||
Map<String, String> attributes = new HashMap<>();
|
||||
attributes.put("document-content-size", String.valueOf(multipartFile.getSize()));
|
||||
metadata.setUserMetadata(attributes);
|
||||
InputStream documentStream = multipartFile.getInputStream();
|
||||
PutObjectResult putObjectResult = this.amazonS3.putObject(new PutObjectRequest(s3bucket, key, documentStream, metadata));
|
||||
|
||||
S3Object s3Object = this.amazonS3.getObject(s3bucket, key);
|
||||
logger.info("Last Modified: " + s3Object.getObjectMetadata().getLastModified());
|
||||
return key;
|
||||
} catch (AmazonS3Exception ex) {
|
||||
if (ex.getErrorCode().equalsIgnoreCase("NoSuchBucket")) {
|
||||
String msg = String.format("No bucket found with name %s", s3bucket);
|
||||
throw new Exception(msg);
|
||||
} else if (ex.getErrorCode().equalsIgnoreCase("AccessDenied")) {
|
||||
String msg = String.format("Access denied to S3 bucket %s", s3bucket);
|
||||
throw new Exception(msg);
|
||||
}
|
||||
throw ex;
|
||||
} catch (IOException ex) {
|
||||
String msg = String.format("Error saving file %s to AWS S3 bucket %s", key, s3bucket);
|
||||
throw new Exception(msg);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -1 +0,0 @@
|
|||
aws.s3bucket=baeldung-documents;
|
||||
|
|
@ -1,62 +0,0 @@
|
|||
package com.baeldung.awss3updateobject.controller;
|
||||
|
||||
import com.baeldung.awss3updateobject.service.FileService;
|
||||
import org.junit.jupiter.api.BeforeEach;
|
||||
import org.junit.jupiter.api.Test;
|
||||
import org.mockito.InjectMocks;
|
||||
import org.mockito.Mock;
|
||||
import org.mockito.MockitoAnnotations;
|
||||
import org.springframework.mock.web.MockMultipartFile;
|
||||
import org.springframework.test.web.servlet.MockMvc;
|
||||
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
|
||||
import org.springframework.web.multipart.MultipartFile;
|
||||
|
||||
import static org.junit.jupiter.api.Assertions.assertEquals;
|
||||
import static org.mockito.Mockito.*;
|
||||
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
|
||||
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
|
||||
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
|
||||
|
||||
public class FileControllerUnitTest {
|
||||
|
||||
private MockMvc mockMvc;
|
||||
|
||||
@Mock
|
||||
private FileService fileService;
|
||||
|
||||
@InjectMocks
|
||||
private FileController fileController;
|
||||
|
||||
@BeforeEach
|
||||
public void setUp() {
|
||||
MockitoAnnotations.openMocks(this);
|
||||
this.mockMvc = MockMvcBuilders.standaloneSetup(fileController).build();
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenValidMultipartFile_whenUploadedViaEndpoint_thenCorrectPathIsReturned() throws Exception {
|
||||
MockMultipartFile multipartFile = new MockMultipartFile("file", "test.txt", "text/plain", "sample file content".getBytes());
|
||||
String expectedResult = "File Uploaded Successfully";
|
||||
|
||||
when(fileService.uploadFile(multipartFile)).thenReturn(expectedResult);
|
||||
|
||||
mockMvc.perform(multipart("/api/v1/file/upload").file(multipartFile))
|
||||
.andExpect(status().isOk())
|
||||
.andExpect(content().string(expectedResult));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenValidMultipartFileAndExistingPath_whenUpdatedViaEndpoint_thenSamePathIsReturned() throws Exception {
|
||||
MockMultipartFile multipartFile = new MockMultipartFile("file", "test.txt", "text/plain", "updated file content".getBytes());
|
||||
String filePath = "some/path/to/file";
|
||||
String expectedResult = "File Updated Successfully";
|
||||
|
||||
when(fileService.updateFile(multipartFile, filePath)).thenReturn(expectedResult);
|
||||
|
||||
mockMvc.perform(multipart("/api/v1/file/update")
|
||||
.file(multipartFile)
|
||||
.param("filePath", filePath))
|
||||
.andExpect(status().isOk())
|
||||
.andExpect(content().string(expectedResult));
|
||||
}
|
||||
}
|
||||
|
|
@ -1,99 +0,0 @@
|
|||
package com.baeldung.awss3updateobject.service;
|
||||
|
||||
import com.amazonaws.services.s3.AmazonS3;
|
||||
import com.amazonaws.services.s3.model.AmazonS3Exception;
|
||||
import com.amazonaws.services.s3.model.PutObjectRequest;
|
||||
import com.amazonaws.services.s3.model.S3Object;
|
||||
import org.junit.jupiter.api.BeforeEach;
|
||||
import org.junit.jupiter.api.Test;
|
||||
import org.mockito.InjectMocks;
|
||||
import org.mockito.Mock;
|
||||
import org.mockito.MockitoAnnotations;
|
||||
import org.springframework.web.multipart.MultipartFile;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
|
||||
import static org.junit.jupiter.api.Assertions.assertEquals;
|
||||
import static org.junit.jupiter.api.Assertions.assertThrows;
|
||||
import static org.mockito.ArgumentMatchers.any;
|
||||
import static org.mockito.Mockito.*;
|
||||
|
||||
public class FileServiceUnitTest {
|
||||
|
||||
@Mock
|
||||
private AmazonS3 amazonS3;
|
||||
|
||||
@Mock
|
||||
private MultipartFile multipartFile;
|
||||
|
||||
@InjectMocks
|
||||
private FileService fileService;
|
||||
|
||||
@BeforeEach
|
||||
public void setup() {
|
||||
MockitoAnnotations.openMocks(this);
|
||||
fileService = new FileService();
|
||||
fileService.awsS3Bucket = "test-bucket";
|
||||
fileService.amazonS3 = amazonS3;
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenValidFile_whenUploaded_thenKeyMatchesDocumentPath() throws Exception {
|
||||
when(multipartFile.getName()).thenReturn("testFile");
|
||||
when(multipartFile.getOriginalFilename()).thenReturn("testFile");
|
||||
when(multipartFile.getContentType()).thenReturn("application/pdf");
|
||||
when(multipartFile.getSize()).thenReturn(1024L);
|
||||
when(multipartFile.getInputStream()).thenReturn(mock(InputStream.class));
|
||||
|
||||
S3Object s3Object = new S3Object();
|
||||
when(amazonS3.putObject(any())).thenReturn(null);
|
||||
when(amazonS3.getObject(anyString(), anyString())).thenReturn(s3Object);
|
||||
|
||||
String key = fileService.uploadFile(multipartFile);
|
||||
|
||||
assertEquals("/documents/testFile", key);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenValidFile_whenUploadFailsDueToNoBucket_thenExceptionIsThrown() throws Exception {
|
||||
when(multipartFile.getName()).thenReturn("testFile");
|
||||
when(multipartFile.getOriginalFilename()).thenReturn("testFile");
|
||||
when(multipartFile.getContentType()).thenReturn("application/pdf");
|
||||
when(multipartFile.getSize()).thenReturn(1024L);
|
||||
when(multipartFile.getInputStream()).thenReturn(mock(InputStream.class));
|
||||
|
||||
AmazonS3Exception exception = new AmazonS3Exception("Test exception");
|
||||
exception.setErrorCode("NoSuchBucket");
|
||||
when(amazonS3.putObject(any(PutObjectRequest.class))).thenThrow(exception);
|
||||
|
||||
assertThrows(Exception.class, () -> fileService.uploadFile(multipartFile));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenExistingFile_whenUpdated_thenSameKeyIsReturned() throws Exception {
|
||||
when(multipartFile.getName()).thenReturn("testFile");
|
||||
when(multipartFile.getContentType()).thenReturn("application/pdf");
|
||||
when(multipartFile.getSize()).thenReturn(1024L);
|
||||
when(multipartFile.getInputStream()).thenReturn(mock(InputStream.class));
|
||||
|
||||
S3Object s3Object = new S3Object();
|
||||
when(amazonS3.putObject(any(PutObjectRequest.class))).thenReturn(null);
|
||||
when(amazonS3.getObject(anyString(), anyString())).thenReturn(s3Object);
|
||||
|
||||
String key = "/documents/existingFile";
|
||||
String resultKey = fileService.updateFile(multipartFile, key);
|
||||
|
||||
assertEquals(key, resultKey);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenFileWithIOException_whenUpdated_thenExceptionIsThrown() throws Exception {
|
||||
when(multipartFile.getName()).thenReturn("testFile");
|
||||
when(multipartFile.getContentType()).thenReturn("application/pdf");
|
||||
when(multipartFile.getSize()).thenReturn(1024L);
|
||||
when(multipartFile.getInputStream()).thenThrow(new IOException("Test IO Exception"));
|
||||
|
||||
assertThrows(Exception.class, () -> fileService.updateFile(multipartFile, "/documents/existingFile"));
|
||||
}
|
||||
}
|
||||
|
|
@ -11,3 +11,4 @@ This module contains articles about Simple Storage Service (S3) on AWS
|
|||
- [Listing All AWS S3 Objects in a Bucket Using Java](https://www.baeldung.com/java-aws-s3-list-bucket-objects)
|
||||
- [Update an Existing Amazon S3 Object Using Java](https://www.baeldung.com/java-update-amazon-s3-object)
|
||||
- [How To Rename Files and Folders in Amazon S3](https://www.baeldung.com/java-amazon-s3-rename-files-folders)
|
||||
- [Update an Existing Amazon S3 Object Using Java](https://www.baeldung.com/java-update-amazon-s3-object)
|
||||
|
|
|
|||
|
|
@ -45,6 +45,13 @@ public class S3Application {
|
|||
new File("/Users/user/Document/hello.txt")
|
||||
);
|
||||
|
||||
s3Service.updateObject(
|
||||
AWS_BUCKET,
|
||||
"Document/hello2.txt",
|
||||
new File("/Users/user/Document/hello2.txt")
|
||||
);
|
||||
|
||||
|
||||
//listing objects
|
||||
s3Service.listObjects(AWS_BUCKET);
|
||||
|
||||
|
|
|
|||
|
|
@ -24,6 +24,7 @@ import software.amazon.awssdk.services.s3.model.GetObjectRequest;
|
|||
import software.amazon.awssdk.services.s3.model.GetObjectResponse;
|
||||
import software.amazon.awssdk.services.s3.model.HeadBucketRequest;
|
||||
import software.amazon.awssdk.services.s3.model.HeadObjectRequest;
|
||||
import software.amazon.awssdk.services.s3.model.HeadObjectResponse;
|
||||
import software.amazon.awssdk.services.s3.model.ListBucketsResponse;
|
||||
import software.amazon.awssdk.services.s3.model.ListObjectsV2Request;
|
||||
import software.amazon.awssdk.services.s3.model.ListObjectsV2Response;
|
||||
|
|
@ -99,7 +100,13 @@ class S3Service {
|
|||
.key(key)
|
||||
.build();
|
||||
|
||||
return s3Client.putObject(request, Path.of(file.toURI()) );
|
||||
|
||||
return s3Client.putObject(request, Path.of(file.toURI()));
|
||||
}
|
||||
|
||||
//updating object
|
||||
public PutObjectResponse updateObject(String bucketName, String key, java.io.File file) {
|
||||
return this.putObject(bucketName, key, file);
|
||||
}
|
||||
|
||||
//listing objects
|
||||
|
|
@ -110,6 +117,7 @@ class S3Service {
|
|||
ListObjectsV2Response listObjectsV2Response = s3Client.listObjectsV2(listObjectsV2Request);
|
||||
|
||||
for(S3Object os : listObjectsV2Response.contents()) {
|
||||
|
||||
System.out.println(os.key());
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -11,6 +11,8 @@ import org.mockito.Mock;
|
|||
import org.mockito.Mockito;
|
||||
import org.mockito.MockitoAnnotations;
|
||||
|
||||
import java.io.File;
|
||||
import java.nio.file.Path;
|
||||
import java.util.Collections;
|
||||
|
||||
import software.amazon.awssdk.services.s3.S3Client;
|
||||
|
|
@ -23,6 +25,7 @@ import software.amazon.awssdk.services.s3.model.HeadBucketRequest;
|
|||
import software.amazon.awssdk.services.s3.model.ListBucketsResponse;
|
||||
import software.amazon.awssdk.services.s3.model.ListObjectsV2Request;
|
||||
import software.amazon.awssdk.services.s3.model.ListObjectsV2Response;
|
||||
import software.amazon.awssdk.services.s3.model.PutObjectRequest;
|
||||
|
||||
class S3ServiceIntegrationTest {
|
||||
|
||||
|
|
@ -38,6 +41,8 @@ class S3ServiceIntegrationTest {
|
|||
|
||||
private final String AWS_BUCKET = "baeldung-tutorial-s3";
|
||||
|
||||
private File file = new File("/Users/user/Document/hello2.txt");
|
||||
|
||||
@BeforeEach
|
||||
public void setup() {
|
||||
MockitoAnnotations.openMocks(this);
|
||||
|
|
@ -75,6 +80,17 @@ class S3ServiceIntegrationTest {
|
|||
verify(s3Client).createBucket(bucketRequest);
|
||||
}
|
||||
|
||||
@Test
|
||||
void whenVerifyingUploadOfS3Object_thenCorrect() {
|
||||
PutObjectRequest request = PutObjectRequest.builder()
|
||||
.bucket(BUCKET_NAME)
|
||||
.key(KEY_NAME)
|
||||
.build();
|
||||
|
||||
s3Service.putObject(BUCKET_NAME, KEY_NAME, file);
|
||||
verify(s3Client).putObject(request, Path.of(file.toURI()) );
|
||||
}
|
||||
|
||||
@Test
|
||||
void whenVerifyingListBuckets_thenCorrect() {
|
||||
when(s3Client.listBuckets()).thenReturn(ListBucketsResponse.builder().buckets(Collections.emptyList()).build());
|
||||
|
|
|
|||
|
|
@ -28,7 +28,6 @@
|
|||
<module>aws-miscellaneous</module>
|
||||
<module>aws-reactive</module>
|
||||
<module>aws-s3</module>
|
||||
<module>aws-s3-update-object</module>
|
||||
</modules>
|
||||
|
||||
<properties>
|
||||
|
|
|
|||
|
|
@ -8,9 +8,9 @@
|
|||
<packaging>jar</packaging>
|
||||
|
||||
<parent>
|
||||
<groupId>com.baeldung</groupId>
|
||||
<artifactId>parent-modules</artifactId>
|
||||
<version>1.0.0-SNAPSHOT</version>
|
||||
<groupId>com.baeldung.core-java-modules</groupId>
|
||||
<artifactId>core-java-modules</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
</parent>
|
||||
|
||||
<dependencies>
|
||||
|
|
@ -21,30 +21,8 @@
|
|||
</dependency>
|
||||
</dependencies>
|
||||
|
||||
<build>
|
||||
<plugins>
|
||||
<plugin>
|
||||
<groupId>org.apache.maven.plugins</groupId>
|
||||
<artifactId>maven-compiler-plugin</artifactId>
|
||||
<version>${maven-compiler-plugin.version}</version>
|
||||
<configuration>
|
||||
<source>${maven.compiler.source.version}</source>
|
||||
<target>${maven.compiler.target.version}</target>
|
||||
<compilerArgs>--enable-preview</compilerArgs>
|
||||
</configuration>
|
||||
</plugin>
|
||||
<plugin>
|
||||
<artifactId>maven-surefire-plugin</artifactId>
|
||||
<configuration>
|
||||
<argLine>--enable-preview</argLine>
|
||||
</configuration>
|
||||
</plugin>
|
||||
</plugins>
|
||||
</build>
|
||||
|
||||
<properties>
|
||||
<maven.compiler.source.version>12</maven.compiler.source.version>
|
||||
<maven.compiler.target.version>12</maven.compiler.target.version>
|
||||
<java.version>17</java.version>
|
||||
</properties>
|
||||
|
||||
</project>
|
||||
|
|
@ -19,19 +19,6 @@ public class SwitchUnitTest {
|
|||
Assert.assertEquals(value, 2);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void switchLocalVariable(){
|
||||
var month = Month.AUG;
|
||||
int i = switch (month){
|
||||
case JAN,JUN, JUL -> 3;
|
||||
case FEB,SEP, OCT, NOV, DEC -> 1;
|
||||
case MAR,MAY, APR, AUG -> {
|
||||
int j = month.toString().length() * 4;
|
||||
break j;
|
||||
}
|
||||
};
|
||||
Assert.assertEquals(12, i);
|
||||
}
|
||||
|
||||
enum Month {JAN, FEB, MAR, APR, MAY, JUN, JUL, AUG, SEP, OCT, NOV, DEC}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -8,39 +8,13 @@
|
|||
<packaging>jar</packaging>
|
||||
|
||||
<parent>
|
||||
<groupId>com.baeldung</groupId>
|
||||
<artifactId>parent-modules</artifactId>
|
||||
<version>1.0.0-SNAPSHOT</version>
|
||||
<groupId>com.baeldung.core-java-modules</groupId>
|
||||
<artifactId>core-java-modules</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
</parent>
|
||||
|
||||
<build>
|
||||
<plugins>
|
||||
<plugin>
|
||||
<groupId>org.apache.maven.plugins</groupId>
|
||||
<artifactId>maven-compiler-plugin</artifactId>
|
||||
<version>${maven-compiler-plugin.version}</version>
|
||||
<configuration>
|
||||
<source>${maven.compiler.source.version}</source>
|
||||
<target>${maven.compiler.target.version}</target>
|
||||
<release>13</release>
|
||||
<compilerArgs>--enable-preview</compilerArgs>
|
||||
</configuration>
|
||||
</plugin>
|
||||
<plugin>
|
||||
<groupId>org.apache.maven.plugins</groupId>
|
||||
<artifactId>maven-surefire-plugin</artifactId>
|
||||
<version>${surefire.plugin.version}</version>
|
||||
<configuration>
|
||||
<argLine>--enable-preview</argLine>
|
||||
</configuration>
|
||||
</plugin>
|
||||
</plugins>
|
||||
</build>
|
||||
|
||||
<properties>
|
||||
<maven.compiler.source.version>13</maven.compiler.source.version>
|
||||
<maven.compiler.target.version>13</maven.compiler.target.version>
|
||||
<surefire.plugin.version>3.0.0-M3</surefire.plugin.version>
|
||||
<java.version>17</java.version>
|
||||
</properties>
|
||||
|
||||
</project>
|
||||
|
|
@ -7,7 +7,6 @@ import org.junit.Test;
|
|||
public class SwitchExpressionsWithYieldUnitTest {
|
||||
|
||||
@Test
|
||||
@SuppressWarnings("preview")
|
||||
public void whenSwitchingOnOperationSquareMe_thenWillReturnSquare() {
|
||||
var me = 4;
|
||||
var operation = "squareMe";
|
||||
|
|
|
|||
|
|
@ -8,7 +8,6 @@ public class TextBlocksUnitTest {
|
|||
|
||||
private static final String JSON_STRING = "{\r\n" + "\"name\" : \"Baeldung\",\r\n" + "\"website\" : \"https://www.%s.com/\"\r\n" + "}";
|
||||
|
||||
@SuppressWarnings("preview")
|
||||
private static final String TEXT_BLOCK_JSON = """
|
||||
{
|
||||
"name" : "Baeldung",
|
||||
|
|
@ -25,7 +24,6 @@ public class TextBlocksUnitTest {
|
|||
|
||||
}
|
||||
|
||||
@SuppressWarnings("removal")
|
||||
@Test
|
||||
public void whenTextBlocks_thenFormattedWorksAsFormat() {
|
||||
assertThat(TEXT_BLOCK_JSON.formatted("baeldung")
|
||||
|
|
|
|||
|
|
@ -13,7 +13,6 @@ import org.junit.Test;
|
|||
public class SwitchExpressionsUnitTest {
|
||||
|
||||
@Test
|
||||
@SuppressWarnings ("preview")
|
||||
public void whenSwitchingOverMonthJune_thenWillReturn3() {
|
||||
|
||||
var month = JUNE;
|
||||
|
|
@ -29,7 +28,6 @@ public class SwitchExpressionsUnitTest {
|
|||
}
|
||||
|
||||
@Test
|
||||
@SuppressWarnings ("preview")
|
||||
public void whenSwitchingOverMonthAugust_thenWillReturn24() {
|
||||
var month = AUGUST;
|
||||
|
||||
|
|
@ -47,7 +45,6 @@ public class SwitchExpressionsUnitTest {
|
|||
}
|
||||
|
||||
@Test
|
||||
@SuppressWarnings ("preview")
|
||||
public void whenSwitchingOverMonthJanuary_thenWillReturn3() {
|
||||
|
||||
Function<Month, Integer> func = (month) -> {
|
||||
|
|
@ -61,7 +58,6 @@ public class SwitchExpressionsUnitTest {
|
|||
}
|
||||
|
||||
@Test
|
||||
@SuppressWarnings ("preview")
|
||||
public void whenSwitchingOverMonthAugust_thenWillReturn2() {
|
||||
var month = AUGUST;
|
||||
|
||||
|
|
|
|||
|
|
@ -8,10 +8,9 @@
|
|||
<packaging>jar</packaging>
|
||||
|
||||
<parent>
|
||||
<groupId>com.baeldung</groupId>
|
||||
<artifactId>parent-modules</artifactId>
|
||||
<version>1.0.0-SNAPSHOT</version>
|
||||
<relativePath>../../pom.xml</relativePath>
|
||||
<groupId>com.baeldung.core-java-modules</groupId>
|
||||
<artifactId>core-java-modules</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
</parent>
|
||||
|
||||
<dependencies>
|
||||
|
|
@ -27,33 +26,8 @@
|
|||
</dependency>
|
||||
</dependencies>
|
||||
|
||||
<build>
|
||||
<plugins>
|
||||
<plugin>
|
||||
<groupId>org.apache.maven.plugins</groupId>
|
||||
<artifactId>maven-compiler-plugin</artifactId>
|
||||
<version>${maven-compiler-plugin.version}</version>
|
||||
<configuration>
|
||||
<release>${maven.compiler.release}</release>
|
||||
<compilerArgs>--enable-preview</compilerArgs>
|
||||
<source>14</source>
|
||||
<target>14</target>
|
||||
</configuration>
|
||||
</plugin>
|
||||
<plugin>
|
||||
<groupId>org.apache.maven.plugins</groupId>
|
||||
<artifactId>maven-surefire-plugin</artifactId>
|
||||
<version>${surefire.plugin.version}</version>
|
||||
<configuration>
|
||||
<argLine>--enable-preview</argLine>
|
||||
</configuration>
|
||||
</plugin>
|
||||
</plugins>
|
||||
</build>
|
||||
|
||||
<properties>
|
||||
<maven.compiler.release>15</maven.compiler.release>
|
||||
<surefire.plugin.version>3.0.0-M3</surefire.plugin.version>
|
||||
<java.version>17</java.version>
|
||||
</properties>
|
||||
|
||||
</project>
|
||||
|
|
@ -1,7 +1,7 @@
|
|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project xmlns="http://maven.apache.org/POM/4.0.0"
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
<artifactId>core-java-21</artifactId>
|
||||
<name>core-java-21</name>
|
||||
|
|
@ -12,12 +12,6 @@
|
|||
<version>0.0.1-SNAPSHOT</version>
|
||||
</parent>
|
||||
|
||||
<properties>
|
||||
<maven.compiler.source.version>21</maven.compiler.source.version>
|
||||
<maven.compiler.target.version>21</maven.compiler.target.version>
|
||||
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
|
||||
</properties>
|
||||
|
||||
<build>
|
||||
<plugins>
|
||||
<plugin>
|
||||
|
|
@ -44,4 +38,10 @@
|
|||
</plugins>
|
||||
</build>
|
||||
|
||||
<properties>
|
||||
<maven.compiler.source.version>21</maven.compiler.source.version>
|
||||
<maven.compiler.target.version>21</maven.compiler.target.version>
|
||||
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
|
||||
</properties>
|
||||
|
||||
</project>
|
||||
|
|
@ -1,7 +1,7 @@
|
|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project xmlns="http://maven.apache.org/POM/4.0.0"
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
<artifactId>core-java-arrays-operations-advanced-2</artifactId>
|
||||
<name>core-java-arrays-operations-advanced-2</name>
|
||||
|
|
|
|||
|
|
@ -1,17 +1,17 @@
|
|||
<project
|
||||
xmlns="http://maven.apache.org/POM/4.0.0"
|
||||
<project xmlns="http://maven.apache.org/POM/4.0.0"
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
<artifactId>core-java-collections-array-list-2</artifactId>
|
||||
<name>core-java-collections-array-list-2</name>
|
||||
<packaging>jar</packaging>
|
||||
|
||||
<parent>
|
||||
<groupId>com.baeldung.core-java-modules</groupId>
|
||||
<artifactId>core-java-modules</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
</parent>
|
||||
|
||||
|
||||
<build>
|
||||
<plugins>
|
||||
<plugin>
|
||||
|
|
@ -24,7 +24,7 @@
|
|||
</plugin>
|
||||
</plugins>
|
||||
</build>
|
||||
|
||||
|
||||
<properties>
|
||||
<maven-compiler-plugin.source>17</maven-compiler-plugin.source>
|
||||
<maven-compiler-plugin.target>17</maven-compiler-plugin.target>
|
||||
|
|
|
|||
|
|
@ -71,4 +71,15 @@ public class ListOfListsUnitTest {
|
|||
assertThat(listOfLists.get(2)).containsExactly("Slack", "Zoom", "Microsoft Teams", "Telegram");
|
||||
printListOfLists(listOfLists);
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
void givenListOfLists_whenGettingSizeOfSubListsAndSizeOfElements_thenGetExpectedResults() throws URISyntaxException, IOException {
|
||||
List<List<String>> listOfLists = getListOfListsFromCsv();
|
||||
// size of inner lists
|
||||
assertThat(listOfLists).hasSize(3);
|
||||
|
||||
// size of all elements in subLists
|
||||
int totalElements = listOfLists.stream().mapToInt(List::size).sum();
|
||||
assertThat(totalElements).isEqualTo(12);
|
||||
}
|
||||
}
|
||||
|
|
@ -1,7 +1,7 @@
|
|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project xmlns="http://maven.apache.org/POM/4.0.0"
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
<artifactId>core-java-collections-list-6</artifactId>
|
||||
<name>core-java-collections-list-6</name>
|
||||
|
|
@ -12,4 +12,5 @@
|
|||
<artifactId>core-java-modules</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
</parent>
|
||||
|
||||
</project>
|
||||
|
|
@ -73,6 +73,11 @@
|
|||
<version>4.13.1</version>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.apache.commons</groupId>
|
||||
<artifactId>commons-csv</artifactId>
|
||||
<version>1.5</version>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
|
||||
</project>
|
||||
</project>
|
||||
|
|
|
|||
|
|
@ -0,0 +1,98 @@
|
|||
package com.baeldung.map;
|
||||
|
||||
import org.junit.jupiter.api.BeforeEach;
|
||||
import org.junit.jupiter.api.Test;
|
||||
|
||||
import java.util.HashMap;
|
||||
import java.util.Map;
|
||||
|
||||
import static org.junit.jupiter.api.Assertions.*;
|
||||
import static org.mockito.ArgumentMatchers.anyString;
|
||||
import static org.mockito.Mockito.*;
|
||||
|
||||
class Magic {
|
||||
public String nullFunc() {
|
||||
return null;
|
||||
}
|
||||
|
||||
public String strFunc(String input) {
|
||||
return input + ": A nice string";
|
||||
}
|
||||
}
|
||||
|
||||
public class PutIfAbsentVsComputeIfAbsentUnitTest {
|
||||
|
||||
private static final Map<String, String> MY_MAP = new HashMap<>();
|
||||
private Magic magic = new Magic();
|
||||
|
||||
@BeforeEach
|
||||
void resetTheMap() {
|
||||
MY_MAP.clear();
|
||||
MY_MAP.put("Key A", "value A");
|
||||
MY_MAP.put("Key B", "value B");
|
||||
MY_MAP.put("Key C", "value C");
|
||||
MY_MAP.put("Key Null", null);
|
||||
}
|
||||
|
||||
@Test
|
||||
void whenCallingPutIfAbsentWithAbsentKey_thenGetNull() {
|
||||
String putResult = MY_MAP.putIfAbsent("new key1", magic.nullFunc());
|
||||
assertNull(putResult);
|
||||
|
||||
putResult = MY_MAP.putIfAbsent("new key2", magic.strFunc("new key2"));
|
||||
assertNull(putResult);
|
||||
|
||||
putResult = MY_MAP.putIfAbsent("Key Null", magic.strFunc("Key Null"));
|
||||
assertNull(putResult);
|
||||
}
|
||||
|
||||
@Test
|
||||
void whenCallingComputeIfAbsentWithAbsentKey_thenGetExpectedResult() {
|
||||
String computeResult = MY_MAP.computeIfAbsent("new key1", k -> magic.nullFunc());
|
||||
assertNull(computeResult);
|
||||
|
||||
computeResult = MY_MAP.computeIfAbsent("new key2", k -> magic.strFunc(k));
|
||||
assertEquals("new key2: A nice string", computeResult);
|
||||
|
||||
computeResult = MY_MAP.computeIfAbsent("Key Null", k -> magic.strFunc(k));
|
||||
assertEquals("Key Null: A nice string", computeResult);
|
||||
}
|
||||
|
||||
@Test
|
||||
void whenCallingPutIfAbsentWithAbsentKey_thenNullIsPut() {
|
||||
assertEquals(4, MY_MAP.size()); // initial: 4 entries
|
||||
MY_MAP.putIfAbsent("new key", magic.nullFunc());
|
||||
assertEquals(5, MY_MAP.size());
|
||||
assertTrue(MY_MAP.containsKey("new key")); // new entry has been added to the map
|
||||
assertNull(MY_MAP.get("new key"));
|
||||
}
|
||||
|
||||
@Test
|
||||
void whenCallingComputeIfAbsentWithAbsentKey_thenNullIsNotPut() {
|
||||
assertEquals(4, MY_MAP.size()); // initial: 4 entries
|
||||
MY_MAP.computeIfAbsent("new key", k -> magic.nullFunc());
|
||||
assertEquals(4, MY_MAP.size());
|
||||
assertFalse(MY_MAP.containsKey("new key")); // <- no new entry added
|
||||
}
|
||||
|
||||
@Test
|
||||
void whenCallingPutIfAbsent_thenFunctionIsAlwaysCalled() {
|
||||
Magic spyMagic = spy(magic);
|
||||
MY_MAP.putIfAbsent("Key A", spyMagic.strFunc("Key A"));
|
||||
verify(spyMagic, times(1)).strFunc(anyString());
|
||||
|
||||
MY_MAP.putIfAbsent("new key", spyMagic.strFunc("new key"));
|
||||
verify(spyMagic, times(2)).strFunc(anyString());
|
||||
}
|
||||
|
||||
@Test
|
||||
void whenCallingComputeIfAbsent_thenFunctionIsCalledOnDemand() {
|
||||
Magic spyMagic = spy(magic);
|
||||
MY_MAP.computeIfAbsent("Key A", k -> spyMagic.strFunc(k));
|
||||
verify(spyMagic, never()).strFunc(anyString());
|
||||
|
||||
MY_MAP.computeIfAbsent("new key", k -> spyMagic.strFunc(k));
|
||||
verify(spyMagic, times(1)).strFunc(anyString());
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,66 @@
|
|||
package com.baeldung.writehashmaptocsvfile;
|
||||
|
||||
import org.junit.jupiter.api.Test;
|
||||
|
||||
import java.io.File;
|
||||
import java.io.FileWriter;
|
||||
import java.io.IOException;
|
||||
import java.nio.file.Files;
|
||||
import java.nio.file.Paths;
|
||||
import java.util.HashMap;
|
||||
import java.util.Map;
|
||||
|
||||
import org.apache.commons.csv.CSVFormat;
|
||||
import org.apache.commons.csv.CSVPrinter;
|
||||
|
||||
import static org.junit.Assert.assertEquals;
|
||||
import static org.junit.jupiter.api.Assertions.assertTrue;
|
||||
|
||||
public class WriteHashmaptoCVSFileUnitTest {
|
||||
public Map<String, String> employeeData;
|
||||
|
||||
public WriteHashmaptoCVSFileUnitTest() {
|
||||
employeeData = new HashMap<>();
|
||||
employeeData.put("Name", "John Doe");
|
||||
employeeData.put("Title", "Software Engineer");
|
||||
employeeData.put("Department", "Engineering");
|
||||
employeeData.put("Salary", "75000");
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenEmployeeData_whenWriteToCSVUsingFileWriter_thenCSVFileIsCreated() {
|
||||
|
||||
try (FileWriter csvWriter = new FileWriter("employee_data.csv")) {
|
||||
// Write header row
|
||||
csvWriter.append("Name,Title,Department,Salary\n");
|
||||
|
||||
// Write data row
|
||||
csvWriter.append(employeeData.get("Name")).append(",");
|
||||
csvWriter.append(employeeData.get("Title")).append(",");
|
||||
csvWriter.append(employeeData.get("Department")).append(",");
|
||||
csvWriter.append(employeeData.get("Salary")).append("\n");
|
||||
} catch (IOException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
// Ensure the CSV file exists
|
||||
assertTrue(new File("employee_data.csv").exists(), "CSV file does not exist!");
|
||||
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenCSVFile_whenWriteToCSVUsingApacheCommons_thenContentsMatchExpected() {
|
||||
|
||||
try (CSVPrinter csvPrinter = new CSVPrinter(new FileWriter("employee_data2.csv"), CSVFormat.DEFAULT)) {
|
||||
// Write header row
|
||||
csvPrinter.printRecord("Name", "Title", "Department", "Salary");
|
||||
|
||||
// Write data row
|
||||
csvPrinter.printRecord(employeeData.get("Name"), employeeData.get("Title"), employeeData.get("Department"), employeeData.get("Salary"));
|
||||
} catch (IOException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
|
||||
// Ensure the CSV file exists
|
||||
assertTrue(new File("employee_data2.csv").exists());
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,36 @@
|
|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project xmlns="http://maven.apache.org/POM/4.0.0"
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
<artifactId>core-java-concurrency-advanced-5</artifactId>
|
||||
<name>core-java-concurrency-advanced-5</name>
|
||||
<packaging>jar</packaging>
|
||||
|
||||
<parent>
|
||||
<groupId>com.baeldung.core-java-modules</groupId>
|
||||
<artifactId>core-java-modules</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
</parent>
|
||||
|
||||
<build>
|
||||
<finalName>core-java-concurrency-advanced-5</finalName>
|
||||
<plugins>
|
||||
<plugin>
|
||||
<groupId>org.apache.maven.plugins</groupId>
|
||||
<artifactId>maven-compiler-plugin</artifactId>
|
||||
<configuration>
|
||||
<source>${maven.compiler.source}</source>
|
||||
<target>${maven.compiler.target}</target>
|
||||
</configuration>
|
||||
</plugin>
|
||||
</plugins>
|
||||
</build>
|
||||
|
||||
<properties>
|
||||
<maven.compiler.source>1.8</maven.compiler.source>
|
||||
<maven.compiler.target>1.8</maven.compiler.target>
|
||||
</properties>
|
||||
|
||||
</project>
|
||||
|
|
@ -0,0 +1,24 @@
|
|||
package com.baeldung.wait_synchronization;
|
||||
|
||||
public class ConditionChecker {
|
||||
|
||||
private volatile Boolean jobIsDone;
|
||||
private final Object lock = new Object();
|
||||
|
||||
public void ensureCondition() {
|
||||
synchronized (lock) {
|
||||
while (!jobIsDone) {
|
||||
try {
|
||||
lock.wait();
|
||||
} catch (InterruptedException e) { }
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
public void complete() {
|
||||
synchronized (lock) {
|
||||
jobIsDone = true;
|
||||
lock.notify();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,22 @@
|
|||
package com.baeldung.wait_synchronization;
|
||||
|
||||
import java.util.concurrent.ExecutorService;
|
||||
import java.util.concurrent.Executors;
|
||||
|
||||
import org.assertj.core.api.Assertions;
|
||||
import org.junit.jupiter.api.Test;
|
||||
|
||||
class ConditionCheckerUnitTest {
|
||||
|
||||
@Test
|
||||
public void givenBothMethodsAreSynchronized_whenBothMethodsAreCalled_thenNoExceptionsOrDeadlocks() {
|
||||
ConditionChecker conditionChecker = new ConditionChecker();
|
||||
|
||||
ExecutorService executorService = Executors.newFixedThreadPool(2);
|
||||
|
||||
Assertions.assertThatCode(() -> {
|
||||
executorService.submit(conditionChecker::ensureCondition);
|
||||
executorService.submit(conditionChecker::complete);
|
||||
}).doesNotThrowAnyException();
|
||||
}
|
||||
}
|
||||
|
|
@ -65,7 +65,7 @@
|
|||
|
||||
<properties>
|
||||
<commons-validator.version>1.6</commons-validator.version>
|
||||
<joda-time.version>2.10.10</joda-time.version>
|
||||
<joda-time.version>2.12.5</joda-time.version>
|
||||
<hirondelle-date4j.version>RELEASE</hirondelle-date4j.version>
|
||||
<maven.compiler.source>1.9</maven.compiler.source>
|
||||
<maven.compiler.target>1.9</maven.compiler.target>
|
||||
|
|
|
|||
|
|
@ -20,8 +20,9 @@ public class Main {
|
|||
System.out.println("General exception");
|
||||
}
|
||||
|
||||
checkedException();
|
||||
checkedExceptionWithTryCatch();
|
||||
checkedExceptionWithThrows();
|
||||
divideByZero();
|
||||
}
|
||||
|
||||
private static void checkedExceptionWithThrows() throws FileNotFoundException {
|
||||
|
|
@ -29,7 +30,7 @@ public class Main {
|
|||
FileInputStream stream = new FileInputStream(file);
|
||||
}
|
||||
|
||||
private static void checkedException() {
|
||||
private static void checkedExceptionWithTryCatch() {
|
||||
File file = new File("not_existing_file.txt");
|
||||
try {
|
||||
FileInputStream stream = new FileInputStream(file);
|
||||
|
|
@ -37,5 +38,11 @@ public class Main {
|
|||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
|
||||
private static void divideByZero() {
|
||||
int numerator = 1;
|
||||
int denominator = 0;
|
||||
int result = numerator / denominator;
|
||||
}
|
||||
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,8 @@
|
|||
package com.baeldung.exceptions.throwvsthrows;
|
||||
|
||||
public class NullOrEmptyException extends RuntimeException {
|
||||
|
||||
public NullOrEmptyException(String errorMessage) {
|
||||
super(errorMessage);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,67 @@
|
|||
package com.baeldung.sizebenchmark;
|
||||
|
||||
import org.apache.commons.io.FileUtils;
|
||||
import org.openjdk.jmh.annotations.*;
|
||||
import org.openjdk.jmh.infra.Blackhole;
|
||||
|
||||
import java.io.File;
|
||||
import java.io.FileInputStream;
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
import java.net.URL;
|
||||
import java.nio.channels.FileChannel;
|
||||
import java.nio.file.Path;
|
||||
import java.nio.file.Paths;
|
||||
import java.util.concurrent.TimeUnit;
|
||||
|
||||
@BenchmarkMode(Mode.SingleShotTime)
|
||||
@OutputTimeUnit(TimeUnit.MILLISECONDS)
|
||||
@Warmup(iterations = 3, time = 10, timeUnit = TimeUnit.NANOSECONDS)
|
||||
@Measurement(iterations = 3, time = 10, timeUnit = TimeUnit.NANOSECONDS)
|
||||
public class FileSizeBenchmark {
|
||||
|
||||
public static void main(String[] args) throws Exception {
|
||||
org.openjdk.jmh.Main.main(args);
|
||||
}
|
||||
|
||||
@Benchmark
|
||||
public void getFileSizeUsingLengthMethod(Blackhole blackhole) throws Exception {
|
||||
File file = new File("src/test/resources/size/sample_file_1.in");
|
||||
blackhole.consume(file.length());
|
||||
}
|
||||
|
||||
@Benchmark
|
||||
public void getFileSizeUsingFileInputStream(Blackhole blackhole) throws Exception {
|
||||
try (FileInputStream fis = new FileInputStream("src/test/resources/size/sample_file_1.in")) {
|
||||
long result = fis.getChannel().size();
|
||||
blackhole.consume(result);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
@Benchmark
|
||||
public void getFileSizeUsingInputStreamAndUrl(Blackhole blackhole) throws Exception {
|
||||
File me = new File("src/test/resources/size/sample_file_1.in");
|
||||
URL url = me.toURI().toURL();
|
||||
|
||||
try (InputStream stream = url.openStream()) {
|
||||
blackhole.consume(stream.available());
|
||||
}
|
||||
}
|
||||
|
||||
@Benchmark
|
||||
public void getFileSizeUsingApacheCommon(Blackhole blackhole) {
|
||||
File imageFile = new File("src/test/resources/size/sample_file_1.in");
|
||||
long size = FileUtils.sizeOf(imageFile);
|
||||
blackhole.consume(size);
|
||||
}
|
||||
|
||||
@Benchmark
|
||||
public void getFileSizeUsingFileChannel(Blackhole blackhole) throws IOException {
|
||||
Path imageFilePath = Paths.get("src/test/resources/size/sample_file_1.in");
|
||||
try (FileChannel imageFileChannel = FileChannel.open(imageFilePath)) {
|
||||
long imageFileSize = imageFileChannel.size();
|
||||
blackhole.consume(imageFileSize);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -3,7 +3,10 @@ package com.baeldung.size;
|
|||
import static org.junit.Assert.assertEquals;
|
||||
|
||||
import java.io.File;
|
||||
import java.io.FileInputStream;
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
import java.net.URL;
|
||||
import java.nio.channels.FileChannel;
|
||||
import java.nio.file.Path;
|
||||
import java.nio.file.Paths;
|
||||
|
|
@ -62,4 +65,24 @@ public class JavaFileSizeUnitTest {
|
|||
final long length = file.length();
|
||||
return length;
|
||||
}
|
||||
|
||||
@Test
|
||||
public void whenGetFileSizeUsingFileInputStream_thenCorrect() throws IOException {
|
||||
|
||||
try (FileInputStream fis = new FileInputStream(filePath)) {
|
||||
long result = fis.getChannel().size();
|
||||
assertEquals(EXPECTED_FILE_SIZE_IN_BYTES, result);
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void whenGetFileSizeUsingUrlAndInputStream_thenCorrect() throws IOException {
|
||||
|
||||
File file = new File(filePath);
|
||||
URL url = file.toURI().toURL();
|
||||
|
||||
try (InputStream stream = url.openStream()) {
|
||||
assertEquals(EXPECTED_FILE_SIZE_IN_BYTES, stream.available());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -12,4 +12,5 @@
|
|||
- [Java Program to Print Pascal’s Triangle](https://www.baeldung.com/java-pascal-triangle)
|
||||
- [Java Money and the Currency API](http://www.baeldung.com/java-money-and-currency)
|
||||
- [Clamp Function in Java](https://www.baeldung.com/java-clamp-function)
|
||||
- [Creating a Magic Square in Java](https://www.baeldung.com/java-magic-square)
|
||||
- More articles: [[<-- Prev]](/core-java-modules/core-java-lang-math-2)
|
||||
|
|
|
|||
|
|
@ -1,7 +1,5 @@
|
|||
package com.baeldung.magicsquare;
|
||||
|
||||
import org.junit.platform.commons.util.StringUtils;
|
||||
|
||||
import java.util.stream.IntStream;
|
||||
|
||||
public class MagicSquare {
|
||||
|
|
|
|||
|
|
@ -1,2 +0,0 @@
|
|||
## Relevant Articles
|
||||
- [Creating a Magic Square in Java](https://www.baeldung.com/java-magic-square)
|
||||
|
|
@ -15,6 +15,7 @@ import java.util.Map;
|
|||
|
||||
import org.apache.http.client.utils.URIBuilder;
|
||||
import org.apache.http.message.BasicNameValuePair;
|
||||
import org.junit.Assert;
|
||||
import org.junit.Test;
|
||||
import org.springframework.web.util.UriComponentsBuilder;
|
||||
|
||||
|
|
@ -23,95 +24,101 @@ import com.google.common.collect.ImmutableMap;
|
|||
public class UrlUnitTest {
|
||||
|
||||
@Test
|
||||
public void givenUrl_whenCanIdentifyProtocol_thenCorrect() throws MalformedURLException {
|
||||
final URL url = new URL("http://baeldung.com");
|
||||
public void givenUrl_whenCanIdentifyProtocol_thenCorrect() throws MalformedURLException, URISyntaxException {
|
||||
final URL url = new URI("http://baeldung.com").toURL();
|
||||
assertEquals("http", url.getProtocol());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenUrl_whenCanGetHost_thenCorrect() throws MalformedURLException {
|
||||
final URL url = new URL("http://baeldung.com");
|
||||
public void givenUrl_whenCanGetHost_thenCorrect() throws MalformedURLException, URISyntaxException {
|
||||
final URL url = new URI("http://baeldung.com").toURL();
|
||||
assertEquals("baeldung.com", url.getHost());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenUrl_whenCanGetFileName_thenCorrect2() throws MalformedURLException {
|
||||
final URL url = new URL("http://baeldung.com/articles?topic=java&version=8");
|
||||
public void givenUrl_whenCanGetFileName_thenCorrect2() throws MalformedURLException, URISyntaxException {
|
||||
final URL url = new URI("http://baeldung.com/articles?topic=java&version=8").toURL();
|
||||
assertEquals("/articles?topic=java&version=8", url.getFile());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenUrl_whenCanGetFileName_thenCorrect1() throws MalformedURLException {
|
||||
final URL url = new URL("http://baeldung.com/guidelines.txt");
|
||||
public void givenUrl_whenCanGetFileName_thenCorrect1() throws MalformedURLException, URISyntaxException {
|
||||
final URL url = new URI("http://baeldung.com/guidelines.txt").toURL();
|
||||
assertEquals("/guidelines.txt", url.getFile());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenUrl_whenCanGetPathParams_thenCorrect() throws MalformedURLException {
|
||||
final URL url = new URL("http://baeldung.com/articles?topic=java&version=8");
|
||||
public void givenUrl_whenCanGetPathParams_thenCorrect() throws MalformedURLException, URISyntaxException {
|
||||
final URL url = new URI("http://baeldung.com/articles?topic=java&version=8").toURL();
|
||||
assertEquals("/articles", url.getPath());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenUrl_whenCanGetQueryParams_thenCorrect() throws MalformedURLException {
|
||||
final URL url = new URL("http://baeldung.com/articles?topic=java");
|
||||
assertEquals("topic=java", url.getQuery());
|
||||
public void givenUrl_whenCanGetQueryParams_thenCorrect() throws MalformedURLException, URISyntaxException {
|
||||
final URL url = new URI("http://baeldung.com/articles?topic=java&version=8").toURL();
|
||||
assertEquals("topic=java&version=8", url.getQuery());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenUrl_whenGetsDefaultPort_thenCorrect() throws MalformedURLException {
|
||||
final URL url = new URL("http://baeldung.com");
|
||||
public void givenUrl_whenGetsDefaultPort_thenCorrect() throws MalformedURLException, URISyntaxException {
|
||||
final URL url = new URI("http://baeldung.com").toURL();
|
||||
assertEquals(-1, url.getPort());
|
||||
assertEquals(80, url.getDefaultPort());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenUrl_whenGetsPort_thenCorrect() throws MalformedURLException {
|
||||
final URL url = new URL("http://baeldung.com:8090");
|
||||
public void givenUrl_whenGetsPort_thenCorrect() throws MalformedURLException, URISyntaxException {
|
||||
final URL url = new URI("http://baeldung.com:8090").toURL();
|
||||
assertEquals(8090, url.getPort());
|
||||
assertEquals(80, url.getDefaultPort());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenBaseUrl_whenCreatesRelativeUrl_thenCorrect() throws MalformedURLException {
|
||||
final URL baseUrl = new URL("http://baeldung.com");
|
||||
final URL relativeUrl = new URL(baseUrl, "a-guide-to-java-sockets");
|
||||
assertEquals("http://baeldung.com/a-guide-to-java-sockets", relativeUrl.toString());
|
||||
public void givenHomeUrlAndFullUrl_whenRelativize_thenCorrect() throws MalformedURLException, URISyntaxException {
|
||||
final URI homeUri = new URI("http://baeldung.com");
|
||||
final URI fullUri = new URI("http://baeldung.com" + "/a-guide-to-java-sockets");
|
||||
final URI relativeUri = homeUri.relativize(fullUri);
|
||||
assertEquals("a-guide-to-java-sockets", relativeUri.toString());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenAbsoluteUrl_whenIgnoresBaseUrl_thenCorrect() throws MalformedURLException {
|
||||
final URL baseUrl = new URL("http://baeldung.com");
|
||||
final URL relativeUrl = new URL(baseUrl, "http://baeldung.com/a-guide-to-java-sockets");
|
||||
assertEquals("http://baeldung.com/a-guide-to-java-sockets", relativeUrl.toString());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenUrlComponents_whenConstructsCompleteUrl_thenCorrect() throws MalformedURLException {
|
||||
public void givenUrlComponents_whenConstructsCompleteUrl_thenCorrect() throws MalformedURLException, URISyntaxException {
|
||||
final String protocol = "http";
|
||||
final String host = "baeldung.com";
|
||||
final String file = "/guidelines.txt";
|
||||
final URL url = new URL(protocol, host, file);
|
||||
assertEquals("http://baeldung.com/guidelines.txt", url.toString());
|
||||
final String fragment = "myImage";
|
||||
final URL url = new URI(protocol, host, file, fragment).toURL();
|
||||
assertEquals("http://baeldung.com/guidelines.txt#myImage", url.toString());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenUrlComponents_whenConstructsCompleteUrl_thenCorrect2() throws MalformedURLException {
|
||||
public void givenUrlComponents_whenConstructsCompleteUrl_thenCorrect2() throws MalformedURLException, URISyntaxException {
|
||||
final String protocol = "http";
|
||||
final String username = "admin";
|
||||
final String host = "baeldung.com";
|
||||
final String file = "/articles?topic=java&version=8";
|
||||
final URL url = new URL(protocol, host, file);
|
||||
assertEquals("http://baeldung.com/articles?topic=java&version=8", url.toString());
|
||||
final String file = "/articles";
|
||||
final String query = "topic=java&version=8";
|
||||
final String fragment = "myImage";
|
||||
final URL url = new URI(protocol, username, host, -1, file, query, fragment).toURL();
|
||||
assertEquals("http://admin@baeldung.com/articles?topic=java&version=8#myImage", url.toString());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenUrlComponentsWithPort_whenConstructsCompleteUrl_thenCorrect() throws MalformedURLException {
|
||||
public void givenRelativeUrl_whenCreatesRelativeUrl_thenThrows() throws URISyntaxException, MalformedURLException {
|
||||
final URI uri = new URI("/a-guide-to-java-sockets");
|
||||
Assert.assertThrows(IllegalArgumentException.class, () -> uri.toURL());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenUrlComponentsWithPort_whenConstructsCompleteUrl_thenCorrect() throws MalformedURLException, URISyntaxException {
|
||||
final String protocol = "http";
|
||||
final String username = "admin";
|
||||
final String host = "baeldung.com";
|
||||
final int port = 9000;
|
||||
final String file = "/guidelines.txt";
|
||||
final URL url = new URL(protocol, host, port, file);
|
||||
assertEquals("http://baeldung.com:9000/guidelines.txt", url.toString());
|
||||
final String fragment = "myImage";
|
||||
final URL url = new URI(protocol, username, host, port, file, null, fragment).toURL();
|
||||
assertEquals("http://admin@baeldung.com:9000/guidelines.txt#myImage", url.toString());
|
||||
}
|
||||
|
||||
@Test
|
||||
|
|
@ -120,7 +127,8 @@ public class UrlUnitTest {
|
|||
uriBuilder.setPort(9090);
|
||||
uriBuilder.addParameter("topic", "java");
|
||||
uriBuilder.addParameter("version", "8");
|
||||
URL url = uriBuilder.build().toURL();
|
||||
URL url = uriBuilder.build()
|
||||
.toURL();
|
||||
assertEquals("http://baeldung.com:9090/articles?topic=java&version=8", url.toString());
|
||||
}
|
||||
|
||||
|
|
@ -130,26 +138,27 @@ public class UrlUnitTest {
|
|||
URIBuilder uriBuilder = new URIBuilder("http://baeldung.com/articles");
|
||||
uriBuilder.setPort(9090);
|
||||
uriBuilder.addParameters(paramMap.entrySet()
|
||||
.stream()
|
||||
.map(entry -> new BasicNameValuePair(entry.getKey(), entry.getValue()))
|
||||
.collect(toList()));
|
||||
.stream()
|
||||
.map(entry -> new BasicNameValuePair(entry.getKey(), entry.getValue()))
|
||||
.collect(toList()));
|
||||
|
||||
URL url = uriBuilder.build().toURL();
|
||||
URL url = uriBuilder.build()
|
||||
.toURL();
|
||||
assertEquals("http://baeldung.com:9090/articles?topic=java&version=8", url.toString());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenUrlParameters_whenBuildUrlWithSpringUriComponentsBuilder_thenSuccess() throws MalformedURLException {
|
||||
URL url = UriComponentsBuilder.newInstance()
|
||||
.scheme("http")
|
||||
.host("baeldung.com")
|
||||
.port(9090)
|
||||
.path("articles")
|
||||
.queryParam("topic", "java")
|
||||
.queryParam("version", "8")
|
||||
.build()
|
||||
.toUri()
|
||||
.toURL();
|
||||
.scheme("http")
|
||||
.host("baeldung.com")
|
||||
.port(9090)
|
||||
.path("articles")
|
||||
.queryParam("topic", "java")
|
||||
.queryParam("version", "8")
|
||||
.build()
|
||||
.toUri()
|
||||
.toURL();
|
||||
|
||||
assertEquals("http://baeldung.com:9090/articles?topic=java&version=8", url.toString());
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project xmlns="http://maven.apache.org/POM/4.0.0"
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
<artifactId>core-java-security-4</artifactId>
|
||||
<name>core-java-security-4</name>
|
||||
|
|
|
|||
|
|
@ -6,19 +6,23 @@ import java.util.function.BinaryOperator;
|
|||
import java.util.stream.Collector;
|
||||
|
||||
class SkippingCollector {
|
||||
|
||||
private static final BinaryOperator<SkippingCollector> IGNORE_COMBINE = (a, b) -> a;
|
||||
private final int skip;
|
||||
private final List<String> list = new ArrayList<>();
|
||||
private int currentIndex = 0;
|
||||
|
||||
private SkippingCollector(int skip) {
|
||||
this.skip = skip;
|
||||
}
|
||||
|
||||
private void accept(String item) {
|
||||
final int index = ++currentIndex % skip;
|
||||
if (index == 0)
|
||||
if (index == 0) {
|
||||
list.add(item);
|
||||
}
|
||||
}
|
||||
|
||||
private List<String> getResult() {
|
||||
return list;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,65 +0,0 @@
|
|||
package com.baeldung.skippingelements;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.Iterator;
|
||||
import java.util.List;
|
||||
import java.util.stream.Collectors;
|
||||
import java.util.stream.IntStream;
|
||||
import java.util.stream.Stream;
|
||||
|
||||
public class SkippingElements {
|
||||
|
||||
private SkippingElements() {
|
||||
}
|
||||
|
||||
public static List<String> skipNthElementInListWithFilter(List<String> sourceList, int n) {
|
||||
return IntStream.range(0, sourceList.size())
|
||||
.filter(s -> (s + 1) % n == 0)
|
||||
.mapToObj(sourceList::get)
|
||||
.collect(Collectors.toList());
|
||||
}
|
||||
|
||||
public static List<String> skipNthElementInListWithIterate(List<String> sourceList, int n) {
|
||||
int limit = sourceList.size() / n;
|
||||
return IntStream.iterate(n - 1, i -> (i + n))
|
||||
.limit(limit)
|
||||
.mapToObj(sourceList::get)
|
||||
.collect(Collectors.toList());
|
||||
}
|
||||
|
||||
public static List<String> skipNthElementInListWithSublist(List<String> sourceList, int n) {
|
||||
int limit = sourceList.size() / n;
|
||||
return Stream.iterate(sourceList, s -> s.subList(n, s.size()))
|
||||
.limit(limit)
|
||||
.map(s -> s.get(n - 1))
|
||||
.collect(Collectors.toList());
|
||||
}
|
||||
|
||||
public static List<String> skipNthElementInListWithFor(List<String> sourceList, int n) {
|
||||
List<String> result = new ArrayList<>();
|
||||
for (int i = n - 1; i < sourceList.size(); i += n) {
|
||||
result.add(sourceList.get(i));
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
public static List<String> skipNthElementInListWithIterator(Stream<String> sourceStream, int n) {
|
||||
List<String> result = new ArrayList<>();
|
||||
final Iterator<String> iterator = sourceStream.iterator();
|
||||
int count = 0;
|
||||
while (iterator.hasNext()) {
|
||||
if (count % n == n - 1) {
|
||||
result.add(iterator.next());
|
||||
} else {
|
||||
iterator.next();
|
||||
}
|
||||
++count;
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
public static List<String> skipNthElementInStreamWithCollector(Stream<String> sourceStream, int n) {
|
||||
return sourceStream.collect(SkippingCollector.collector(n));
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -3,7 +3,11 @@ package com.baeldung.skippingelements;
|
|||
|
||||
import static org.junit.jupiter.api.Assertions.assertEquals;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.Iterator;
|
||||
import java.util.List;
|
||||
import java.util.stream.Collectors;
|
||||
import java.util.stream.IntStream;
|
||||
import java.util.stream.Stream;
|
||||
import org.junit.jupiter.params.ParameterizedTest;
|
||||
import org.junit.jupiter.params.provider.Arguments;
|
||||
|
|
@ -14,21 +18,22 @@ class SkippingElementsUnitTest {
|
|||
private static Stream<Arguments> testSource() {
|
||||
return Stream.of(
|
||||
Arguments.of(
|
||||
List.of("One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve", "Thirteen",
|
||||
Stream.of("One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve", "Thirteen",
|
||||
"Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen", "Twenty", "Twenty One", "Twenty Two",
|
||||
"Twenty Three", "Twenty Four", "Twenty Five", "Twenty Six", "Twenty Seven", "Twenty Eight", "Twenty Nine", "Thirty",
|
||||
"Thirty One", "Thirty Two", "Thirty Three"),
|
||||
List.of("Three", "Six", "Nine", "Twelve", "Fifteen", "Eighteen", "Twenty One", "Twenty Four", "Twenty Seven", "Thirty", "Thirty Three"),
|
||||
List.of("Three", "Six", "Nine", "Twelve", "Fifteen", "Eighteen", "Twenty One", "Twenty Four", "Twenty Seven", "Thirty",
|
||||
"Thirty Three"),
|
||||
3),
|
||||
Arguments.of(
|
||||
List.of("One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve", "Thirteen",
|
||||
Stream.of("One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve", "Thirteen",
|
||||
"Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen", "Twenty", "Twenty One", "Twenty Two",
|
||||
"Twenty Three", "Twenty Four", "Twenty Five", "Twenty Six", "Twenty Seven", "Twenty Eight", "Twenty Nine", "Thirty",
|
||||
"Thirty One", "Thirty Two", "Thirty Three"),
|
||||
List.of("Five", "Ten", "Fifteen", "Twenty", "Twenty Five", "Thirty"),
|
||||
5),
|
||||
Arguments.of(
|
||||
List.of("One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve", "Thirteen",
|
||||
Stream.of("One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve", "Thirteen",
|
||||
"Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen", "Twenty", "Twenty One", "Twenty Two",
|
||||
"Twenty Three", "Twenty Four", "Twenty Five", "Twenty Six", "Twenty Seven", "Twenty Eight", "Twenty Nine", "Thirty",
|
||||
"Thirty One", "Thirty Two", "Thirty Three"),
|
||||
|
|
@ -38,29 +43,29 @@ class SkippingElementsUnitTest {
|
|||
"Thirty One", "Thirty Two", "Thirty Three"),
|
||||
1),
|
||||
Arguments.of(
|
||||
List.of("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"),
|
||||
Stream.of("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"),
|
||||
List.of("Wednesday", "Saturday"),
|
||||
3),
|
||||
Arguments.of(
|
||||
List.of("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"),
|
||||
Stream.of("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"),
|
||||
List.of("Friday"),
|
||||
5),
|
||||
Arguments.of(
|
||||
List.of("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"),
|
||||
Stream.of("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"),
|
||||
List.of("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"),
|
||||
1),
|
||||
Arguments.of(
|
||||
List.of("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November",
|
||||
Stream.of("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November",
|
||||
"December"),
|
||||
List.of("March", "June", "September", "December"),
|
||||
3),
|
||||
Arguments.of(
|
||||
List.of("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November",
|
||||
Stream.of("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November",
|
||||
"December"),
|
||||
List.of("May", "October"),
|
||||
5),
|
||||
Arguments.of(
|
||||
List.of("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November",
|
||||
Stream.of("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November",
|
||||
"December"),
|
||||
List.of("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November",
|
||||
"December"),
|
||||
|
|
@ -70,45 +75,73 @@ class SkippingElementsUnitTest {
|
|||
|
||||
@ParameterizedTest
|
||||
@MethodSource("testSource")
|
||||
void givenListSkipNthElementInListWithFilterTestShouldFilterNthElement(List<String> input, List<String> expected, int n) {
|
||||
final List<String> actual = SkippingElements.skipNthElementInListWithFilter(input, n);
|
||||
void givenListSkipNthElementInListWithFilterTestShouldFilterNthElement(Stream<String> input, List<String> expected, int n) {
|
||||
final List<String> sourceList = input.collect(Collectors.toList());
|
||||
final List<String> actual = IntStream.range(0, sourceList.size())
|
||||
.filter(s -> (s + 1) % n == 0)
|
||||
.mapToObj(sourceList::get)
|
||||
.collect(Collectors.toList());
|
||||
assertEquals(expected, actual);
|
||||
}
|
||||
|
||||
@ParameterizedTest
|
||||
@MethodSource("testSource")
|
||||
void givenListSkipNthElementInListWithIterateTestShouldFilterNthElement(List<String> input, List<String> expected, int n) {
|
||||
final List<String> actual = SkippingElements.skipNthElementInListWithIterate(input, n);
|
||||
void givenListSkipNthElementInListWithIterateTestShouldFilterNthElement(Stream<String> input, List<String> expected, int n) {
|
||||
final List<String> sourceList = input.collect(Collectors.toList());
|
||||
int limit = sourceList.size() / n;
|
||||
final List<String> actual = IntStream.iterate(n - 1, i -> (i + n))
|
||||
.limit(limit)
|
||||
.mapToObj(sourceList::get)
|
||||
.collect(Collectors.toList());
|
||||
assertEquals(expected, actual);
|
||||
}
|
||||
|
||||
@ParameterizedTest
|
||||
@MethodSource("testSource")
|
||||
void givenListSkipNthElementInListWithSublistTestShouldFilterNthElement(List<String> input, List<String> expected, int n) {
|
||||
final List<String> actual = SkippingElements.skipNthElementInListWithSublist(input, n);
|
||||
void givenListSkipNthElementInListWithSublistTestShouldFilterNthElement(Stream<String> input, List<String> expected, int n) {
|
||||
final List<String> sourceList = input.collect(Collectors.toList());
|
||||
int limit = sourceList.size() / n;
|
||||
final List<String> actual = Stream.iterate(sourceList, s -> s.subList(n, s.size()))
|
||||
.limit(limit)
|
||||
.map(s -> s.get(n - 1))
|
||||
.collect(Collectors.toList());
|
||||
assertEquals(expected, actual);
|
||||
}
|
||||
|
||||
@ParameterizedTest
|
||||
@MethodSource("testSource")
|
||||
void givenListSkipNthElementInListWithForTestShouldFilterNthElement(List<String> input, List<String> expected, int n) {
|
||||
final List<String> actual = SkippingElements.skipNthElementInListWithFor(input, n);
|
||||
void givenListSkipNthElementInListWithForTestShouldFilterNthElement(Stream<String> input, List<String> expected, int n) {
|
||||
final List<String> sourceList = input.collect(Collectors.toList());
|
||||
List<String> result = new ArrayList<>();
|
||||
for (int i = n - 1; i < sourceList.size(); i += n) {
|
||||
result.add(sourceList.get(i));
|
||||
}
|
||||
final List<String> actual = result;
|
||||
assertEquals(expected, actual);
|
||||
}
|
||||
|
||||
@ParameterizedTest
|
||||
@MethodSource("testSource")
|
||||
void givenListSkipNthElementInStreamWithIteratorTestShouldFilterNthElement(List<String> input, List<String> expected, int n) {
|
||||
final Stream<String> inputStream = input.stream();
|
||||
final List<String> actual = SkippingElements.skipNthElementInListWithIterator(inputStream, n);
|
||||
void givenListSkipNthElementInStreamWithIteratorTestShouldFilterNthElement(Stream<String> input, List<String> expected, int n) {
|
||||
List<String> result = new ArrayList<>();
|
||||
final Iterator<String> iterator = input.iterator();
|
||||
int count = 0;
|
||||
while (iterator.hasNext()) {
|
||||
if (count % n == n - 1) {
|
||||
result.add(iterator.next());
|
||||
} else {
|
||||
iterator.next();
|
||||
}
|
||||
++count;
|
||||
}
|
||||
final List<String> actual = result;
|
||||
assertEquals(expected, actual);
|
||||
}
|
||||
|
||||
@ParameterizedTest
|
||||
@MethodSource("testSource")
|
||||
void givenListSkipNthElementInStreamWithCollectorShouldFilterNthElement(List<String> input, List<String> expected, int n) {
|
||||
final Stream<String> inputStream = input.stream();
|
||||
final List<String> actual = SkippingElements.skipNthElementInStreamWithCollector(inputStream, n);
|
||||
void givenListSkipNthElementInStreamWithCollectorShouldFilterNthElement(Stream<String> input, List<String> expected, int n) {
|
||||
final List<String> actual = input.collect(SkippingCollector.collector(n));
|
||||
assertEquals(expected, actual);
|
||||
}
|
||||
}
|
||||
|
|
@ -2,6 +2,10 @@
|
|||
|
||||
This module contains articles about Streams that are part of the Java Streams Ebook.
|
||||
|
||||
### NOTE:
|
||||
|
||||
Since this is a module tied to an e-book, it should **not** be moved or used to store the code for any further article.
|
||||
|
||||
### Relevant Articles
|
||||
|
||||
- [Introduction to Java 8 Streams](https://www.baeldung.com/java-8-streams-introduction)
|
||||
|
|
@ -11,4 +15,4 @@ This module contains articles about Streams that are part of the Java Streams Eb
|
|||
- [The Difference Between map() and flatMap()](https://www.baeldung.com/java-difference-map-and-flatmap)
|
||||
- [When to Use a Parallel Stream in Java](https://www.baeldung.com/java-when-to-use-parallel-stream)
|
||||
- [Guide to Java 8 groupingBy Collector](https://www.baeldung.com/java-groupingby-collector)
|
||||
- [Guide to Stream.reduce()](https://www.baeldung.com/java-stream-reduce)
|
||||
- [Guide to Stream.reduce()](https://www.baeldung.com/java-stream-reduce)
|
||||
|
|
|
|||
|
|
@ -28,6 +28,11 @@
|
|||
<artifactId>emoji-java</artifactId>
|
||||
<version>${emoji-java.version}</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.apache.commons</groupId>
|
||||
<artifactId>commons-text</artifactId>
|
||||
<version>${apache-commons-text.version}</version>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
|
||||
<build>
|
||||
|
|
@ -58,6 +63,7 @@
|
|||
<validator.version>1.7</validator.version>
|
||||
<apache-commons-lang3.version>3.12.0</apache-commons-lang3.version>
|
||||
<emoji-java.version>5.1.1</emoji-java.version>
|
||||
<apache-commons-text.version>1.10.0</apache-commons-text.version>
|
||||
</properties>
|
||||
|
||||
</project>
|
||||
|
|
@ -0,0 +1,28 @@
|
|||
package com.baeldung.wrappingcharacterwise;
|
||||
|
||||
import java.lang.IllegalArgumentException;
|
||||
import java.lang.String;
|
||||
import java.lang.StringBuilder;
|
||||
|
||||
public class Wrapper {
|
||||
|
||||
public String wrapStringCharacterWise(String input, int n) {
|
||||
StringBuilder stringBuilder = new StringBuilder(input);
|
||||
int index = 0;
|
||||
while(stringBuilder.length() > index + n) {
|
||||
int lastLineReturn = stringBuilder.lastIndexOf("\n", index + n);
|
||||
if (lastLineReturn > index) {
|
||||
index = lastLineReturn;
|
||||
} else {
|
||||
index = stringBuilder.lastIndexOf(" ", index + n);
|
||||
if (index == -1) {
|
||||
throw new IllegalArgumentException("impossible to slice " + stringBuilder.substring(0, n));
|
||||
}
|
||||
stringBuilder.replace(index, index + 1, "\n");
|
||||
index++;
|
||||
}
|
||||
}
|
||||
return stringBuilder.toString();
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,62 @@
|
|||
package com.baeldung.wrappingcharacterwise;
|
||||
|
||||
import static org.junit.jupiter.api.Assertions.assertEquals;
|
||||
import static org.junit.jupiter.api.Assertions.assertThrows;
|
||||
|
||||
import org.apache.commons.text.WordUtils;
|
||||
import org.junit.jupiter.api.Test;
|
||||
|
||||
public class WrapperUnitTest {
|
||||
|
||||
Wrapper wrapper = new Wrapper();
|
||||
String lineSeparator = System.lineSeparator();
|
||||
|
||||
@Test
|
||||
void givenStringWithLessThanNCharacters_whenWrapStringCharacterWise_thenUnchanged() {
|
||||
String input = "short sentence";
|
||||
assertEquals(input, wrapper.wrapStringCharacterWise(input, 20));
|
||||
}
|
||||
|
||||
@Test
|
||||
void givenStringWithMoreThanNCharacters_whenWrapStringCharacterWise_thenCorrectlyWrapped() {
|
||||
String input = "Baeldung is a popular website that provides in-depth tutorials and articles on various programming and software development topics, primarily focused on Java and related technologies.";
|
||||
assertEquals("Baeldung is a\npopular website that\nprovides in-depth\ntutorials and\narticles on various\nprogramming and\nsoftware development\ntopics, primarily\nfocused on Java and\nrelated\ntechnologies.", wrapper.wrapStringCharacterWise(input, 20));
|
||||
}
|
||||
|
||||
@Test
|
||||
void givenStringWithATooLongWord_whenWrapStringCharacterWise_thenThrows() {
|
||||
String input = "The word straightforward has more than 10 characters";
|
||||
assertThrows(IllegalArgumentException.class, () -> wrapper.wrapStringCharacterWise(input, 10));
|
||||
}
|
||||
|
||||
@Test
|
||||
void givenStringWithLineReturns_whenWrapStringCharacterWise_thenWrappedAccordingly() {
|
||||
String input = "Baeldung\nis a popular website that provides in-depth tutorials and articles on various programming and software development topics, primarily focused on Java and related technologies.";
|
||||
assertEquals("Baeldung\nis a popular\nwebsite that\nprovides in-depth\ntutorials and\narticles on various\nprogramming and\nsoftware development\ntopics, primarily\nfocused on Java and\nrelated\ntechnologies.", wrapper.wrapStringCharacterWise(input, 20));
|
||||
}
|
||||
|
||||
@Test
|
||||
void givenStringWithLessThanNCharacters_whenWrap_thenUnchanged() {
|
||||
String input = "short sentence";
|
||||
assertEquals(input, WordUtils.wrap(input, 20));
|
||||
}
|
||||
|
||||
@Test
|
||||
void givenStringWithMoreThanNCharacters_whenWrap_thenCorrectlyWrapped() {
|
||||
String input = "Baeldung is a popular website that provides in-depth tutorials and articles on various programming and software development topics, primarily focused on Java and related technologies.";
|
||||
assertEquals("Baeldung is a" + lineSeparator + "popular website that" + lineSeparator + "provides in-depth" + lineSeparator + "tutorials and" + lineSeparator + "articles on various" + lineSeparator + "programming and" + lineSeparator + "software development" + lineSeparator + "topics, primarily" + lineSeparator + "focused on Java and" + lineSeparator + "related" + lineSeparator + "technologies.", WordUtils.wrap(input, 20));
|
||||
}
|
||||
|
||||
@Test
|
||||
void givenStringWithATooLongWord_whenWrap_thenLongWordIsNotWrapped() {
|
||||
String input = "The word straightforward has more than 10 characters";
|
||||
assertEquals("The word" + lineSeparator + "straightforward" + lineSeparator + "has more" + lineSeparator + "than 10" + lineSeparator + "characters", WordUtils.wrap(input, 10));
|
||||
}
|
||||
|
||||
@Test
|
||||
void givenStringWithLineReturns_whenWrap_thenWrappedLikeThereWasNone() {
|
||||
String input = "Baeldung" + lineSeparator + "is a popular website that provides in-depth tutorials and articles on various programming and software development topics, primarily focused on Java and related technologies.";
|
||||
assertEquals("Baeldung" + lineSeparator + "is a" + lineSeparator + "popular website that" + lineSeparator + "provides in-depth" + lineSeparator + "tutorials and" + lineSeparator + "articles on various" + lineSeparator + "programming and" + lineSeparator + "software development" + lineSeparator + "topics, primarily" + lineSeparator + "focused on Java and" + lineSeparator + "related" + lineSeparator + "technologies.", WordUtils.wrap(input, 20));
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -23,4 +23,12 @@
|
|||
</resources>
|
||||
</build>
|
||||
|
||||
</project>
|
||||
<dependencies>
|
||||
<dependency>
|
||||
<groupId>org.apache.commons</groupId>
|
||||
<artifactId>commons-lang3</artifactId>
|
||||
<version>${commons-lang3.version}</version>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
|
||||
</project>
|
||||
|
|
|
|||
|
|
@ -0,0 +1,34 @@
|
|||
package com.baeldung.objecttostring;
|
||||
|
||||
import org.apache.commons.lang3.builder.ToStringBuilder;
|
||||
import org.apache.commons.lang3.builder.ToStringStyle;
|
||||
|
||||
public class Person {
|
||||
private String name;
|
||||
private int age;
|
||||
|
||||
public Person(String name, int age) {
|
||||
this.name = name;
|
||||
this.age = age;
|
||||
}
|
||||
|
||||
public String getName() {
|
||||
return name;
|
||||
}
|
||||
|
||||
public int getAge() {
|
||||
return age;
|
||||
}
|
||||
|
||||
@Override
|
||||
public String toString() {
|
||||
return "Person{name='" + name + "', age=" + age + '}';
|
||||
}
|
||||
|
||||
public String toCustomString() {
|
||||
return new ToStringBuilder(this, ToStringStyle.JSON_STYLE)
|
||||
.append("name", name)
|
||||
.append("age", age)
|
||||
.toString();
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,38 @@
|
|||
package com.baeldung.objecttostring;
|
||||
|
||||
import org.junit.Test;
|
||||
import static org.junit.Assert.assertEquals;
|
||||
|
||||
public class PersonUnitTest {
|
||||
@Test
|
||||
public void givenObject_whenToString_thenConvert() {
|
||||
Person person = new Person("Sarah", 28);
|
||||
String expected = "Person{name='Sarah', age=28}";
|
||||
String actual = person.toString();
|
||||
assertEquals(expected, actual);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenObject_whenValueOf_thenConvert() {
|
||||
Person person = new Person("Sarah", 28);
|
||||
String expected = "Person{name='Sarah', age=28}";
|
||||
String actual = String.valueOf(person);
|
||||
assertEquals(expected, actual);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenObject_whenConcat_thenConvert() {
|
||||
Person person = new Person("Sarah", 28);
|
||||
String expected = "Person{name='Sarah', age=28}";
|
||||
String actual = "" + person;
|
||||
assertEquals(expected, actual);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenObject_whenToStringBuilder_thenConvert() {
|
||||
Person person = new Person("Sarah", 28);
|
||||
String expected = "{\"name\":\"Sarah\",\"age\":28}";
|
||||
String actual = person.toCustomString();
|
||||
assertEquals(expected, actual);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,2 @@
|
|||
|
||||
### Relevant Articles:
|
||||
|
|
@ -0,0 +1,72 @@
|
|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project xmlns="http://maven.apache.org/POM/4.0.0"
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
<artifactId>core-java-string-operations-7</artifactId>
|
||||
<name>core-java-string-operations-7</name>
|
||||
<packaging>jar</packaging>
|
||||
|
||||
<parent>
|
||||
<groupId>com.baeldung.core-java-modules</groupId>
|
||||
<artifactId>core-java-modules</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
</parent>
|
||||
|
||||
<dependencies>
|
||||
<dependency>
|
||||
<groupId>org.apache.commons</groupId>
|
||||
<artifactId>commons-lang3</artifactId>
|
||||
<version>${apache.commons.lang3.version}</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.apache.commons</groupId>
|
||||
<artifactId>commons-text</artifactId>
|
||||
<version>${commons-text.version}</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.liquibase</groupId>
|
||||
<artifactId>liquibase-core</artifactId>
|
||||
<version>4.9.1</version>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.junit.jupiter</groupId>
|
||||
<artifactId>junit-jupiter</artifactId>
|
||||
<version>5.8.1</version>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.liquibase</groupId>
|
||||
<artifactId>liquibase-core</artifactId>
|
||||
<version>4.9.1</version>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>junit</groupId>
|
||||
<artifactId>junit</artifactId>
|
||||
<version>4.13.2</version>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
|
||||
<build>
|
||||
<plugins>
|
||||
<plugin>
|
||||
<groupId>org.apache.maven.plugins</groupId>
|
||||
<artifactId>maven-compiler-plugin</artifactId>
|
||||
<configuration>
|
||||
<source>${maven.compiler.source}</source>
|
||||
<target>${maven.compiler.target}</target>
|
||||
</configuration>
|
||||
</plugin>
|
||||
</plugins>
|
||||
</build>
|
||||
|
||||
<properties>
|
||||
<maven.compiler.source>11</maven.compiler.source>
|
||||
<maven.compiler.target>11</maven.compiler.target>
|
||||
<apache.commons.lang3.version>3.12.0</apache.commons.lang3.version>
|
||||
<commons-text.version>1.10.0</commons-text.version>
|
||||
</properties>
|
||||
|
||||
</project>
|
||||
|
|
@ -0,0 +1,45 @@
|
|||
package com.baeldung.centertext;
|
||||
|
||||
import liquibase.repackaged.org.apache.commons.lang3.StringUtils;
|
||||
import org.junit.Assert;
|
||||
import org.junit.jupiter.api.Test;
|
||||
|
||||
import static org.junit.Assert.assertEquals;
|
||||
|
||||
public class CenteringTextUnitTest {
|
||||
|
||||
@Test
|
||||
public void givenTextAndTotalWidth_whenUsingStringFormat_thenTextIsCentered() {
|
||||
String text = "Centered Text";
|
||||
int totalWidth = 15;
|
||||
int padding = (totalWidth - text.length()) / 2;
|
||||
String centeredText = String.format("%" + padding + "s%s%" + padding + "s", "", text, "");
|
||||
Assert.assertEquals(" Centered Text ", centeredText);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenTextAndTotalWidth_whenCenterUsingStringBuilder_thenTextIsCentered() {
|
||||
String text = "Centered Text";
|
||||
int width = 15;
|
||||
int padding = (width - text.length()) / 2;
|
||||
StringBuilder centeredText = new StringBuilder();
|
||||
for (int i = 0; i < padding; i++) {
|
||||
centeredText.append(" ");
|
||||
}
|
||||
centeredText.append(text);
|
||||
for (int i = 0; i < padding; i++) {
|
||||
centeredText.append(" ");
|
||||
}
|
||||
String centeredTextString = centeredText.toString();
|
||||
Assert.assertEquals(" Centered Text ", centeredTextString);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenTextAndTotalWidth_whenUsingStringUtilsCenterMethod_thenTextIsCentered() {
|
||||
String text = "Centered Text";
|
||||
int width = 15;
|
||||
String centeredText = StringUtils.center(text, width);
|
||||
assertEquals(" Centered Text ", centeredText);
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -27,6 +27,11 @@
|
|||
<!--<module>core-java-security</module> -->
|
||||
<!--<module>core-java-streams-2</module> -->
|
||||
<!--<module>core-java-sun</module> -->
|
||||
<!-- <module>core-java-modules/core-java-9-new-features</module> --> <!-- JAVA-26056 -->
|
||||
<!-- <module>core-java-modules/core-java-14</module> --> <!-- JAVA-26056 -->
|
||||
<!-- <module>core-java-modules/core-java-16</module> --> <!-- JAVA-26056 -->
|
||||
<!-- <module>core-java-modules/core-java-17</module> --> <!-- JAVA-26056 -->
|
||||
<!-- <module>core-java-modules/core-java-19</module> --> <!-- JAVA-26056 -->
|
||||
<module>core-java-9-improvements</module>
|
||||
<module>core-java-9-streams</module>
|
||||
<module>core-java-9</module>
|
||||
|
|
@ -34,6 +39,9 @@
|
|||
<module>core-java-11</module>
|
||||
<module>core-java-11-2</module>
|
||||
<module>core-java-11-3</module>
|
||||
<module>core-java-12</module>
|
||||
<module>core-java-13</module>
|
||||
<module>core-java-15</module>
|
||||
<module>core-java-collections-array-list</module>
|
||||
<module>core-java-collections-array-list-2</module>
|
||||
<module>core-java-collections-list-4</module>
|
||||
|
|
@ -178,12 +186,18 @@
|
|||
<module>core-java-string-operations</module>
|
||||
<module>core-java-string-operations-2</module>
|
||||
<module>core-java-string-operations-6</module>
|
||||
<module>core-java-string-operations-7</module>
|
||||
<module>core-java-regex</module>
|
||||
<module>core-java-regex-2</module>
|
||||
<module>core-java-uuid</module>
|
||||
<module>core-java-collections-maps-6</module>
|
||||
<module>core-java-records</module>
|
||||
<module>core-java-9-jigsaw</module>
|
||||
<!--<module>core-java-20</module>--> <!--JAVA-25373-->
|
||||
<module>core-java-collections-set</module>
|
||||
<module>core-java-date-operations-1</module>
|
||||
<!--<module>core-java-datetime-conversion</module>--> <!--JAVA-25433-->
|
||||
<module>core-java-httpclient</module>
|
||||
</modules>
|
||||
|
||||
<dependencyManagement>
|
||||
|
|
|
|||
|
|
@ -237,7 +237,6 @@
|
|||
<jsoniter.version>0.9.23</jsoniter.version>
|
||||
<moshi.version>1.9.2</moshi.version>
|
||||
<fastjson.version>1.2.21</fastjson.version>
|
||||
<json.version>20211205</json.version>
|
||||
<jsonschema2pojo-core.version>1.1.1</jsonschema2pojo-core.version>
|
||||
<jackson-jsonld.version>0.1.1</jackson-jsonld.version>
|
||||
<hydra-jsonld.version>0.4.2</hydra-jsonld.version>
|
||||
|
|
|
|||
|
|
@ -38,7 +38,6 @@
|
|||
|
||||
<properties>
|
||||
<jsonb-api.version>1.0</jsonb-api.version>
|
||||
<json.version>20230227</json.version>
|
||||
<gson.version>2.8.5</gson.version>
|
||||
<javax.version>1.1.2</javax.version>
|
||||
<json-unit-assertj.version>2.28.0</json-unit-assertj.version>
|
||||
|
|
|
|||
|
|
@ -37,7 +37,6 @@
|
|||
</dependencies>
|
||||
|
||||
<properties>
|
||||
<json.version>20211205</json.version>
|
||||
<gson.version>2.10.1</gson.version>
|
||||
<guava.version>32.1.2-jre</guava.version>
|
||||
</properties>
|
||||
|
|
|
|||
|
|
@ -68,7 +68,6 @@
|
|||
<networknt.json.schema.version>1.0.72</networknt.json.schema.version>
|
||||
<jsonb-api.version>1.0</jsonb-api.version>
|
||||
<yasson.version>1.0.1</yasson.version>
|
||||
<json.version>20230227</json.version>
|
||||
<gson.version>2.8.5</gson.version>
|
||||
<javax.version>1.1.2</javax.version>
|
||||
<json-unit-assertj.version>2.28.0</json-unit-assertj.version>
|
||||
|
|
|
|||
|
|
@ -34,4 +34,8 @@
|
|||
</pluginManagement>
|
||||
</build>
|
||||
|
||||
<properties>
|
||||
<json.version>20230618</json.version>
|
||||
</properties>
|
||||
|
||||
</project>
|
||||
|
|
@ -4,9 +4,9 @@
|
|||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
<groupId>com.baeldung</groupId>
|
||||
<artifactId>api-service</artifactId>
|
||||
<artifactId>lightrun-api-service</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
<name>api-service</name>
|
||||
<name>lightrun-api-service</name>
|
||||
<description>Aggregator Service for LightRun Article</description>
|
||||
|
||||
<parent>
|
||||
|
|
@ -4,9 +4,9 @@
|
|||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
<groupId>com.baeldung</groupId>
|
||||
<artifactId>tasks-service</artifactId>
|
||||
<artifactId>lightrun-tasks-service</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
<name>tasks-service</name>
|
||||
<name>lightrun-tasks-service</name>
|
||||
<description>Tasks Service for LightRun Article</description>
|
||||
|
||||
<parent>
|
||||
|
|
@ -4,9 +4,9 @@
|
|||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
<groupId>com.baeldung</groupId>
|
||||
<artifactId>users-service</artifactId>
|
||||
<artifactId>lightrun-users-service</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
<name>users-service</name>
|
||||
<name>lightrun-users-service</name>
|
||||
<description>Users Service for LightRun Article</description>
|
||||
|
||||
<parent>
|
||||
Some files were not shown because too many files have changed in this diff Show More
Loading…
Reference in New Issue