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BAEL-1309 Append Data to a File with Java (#3054) 

* Evaluation article: Different Types of Bean Injection in Spring

* added tests & changed configuration to Java-based config

* removed xml config files

* rename unit tests

* BAEL-972 - Apache Commons Text

* remove code from evaluation article

* remove code from evaluation article

* BAEL-972 - Apache Commons Text - added another example

* BAEL-972 - Apache Commons Text - just indentation

* BAEL-994 - TemporalAdjuster in Java

* BAEL-994 - TemporalAdjuster in Java

* BAEL-994 - TemporalAdjuster in Java

* BAEL-994 - TemporalAdjuster in Java

* BAEL-994 - TemporalAdjuster in Java - fix problems

* BAEL-1033 Introduction to StreamUtils

* BAEL-1033 Introduction to StreamUtils

* BAEL-1033 Introduction to StreamUtils

* fix formatting

* BAEL-1033 minor refactor

* BAEL-1035 Introduction to Eclipse Collections

* format

* BAEL-1035 Introduction to Eclipse Collections

* BAEL-1035 Introduction to Eclipse Collections

* BAEL-1035 Introduction to Eclipse Collections

* cleanup

* cleanup

* BAEL-1109 Introduction to JCache

* BAEL-1109 Introduction to JCache

* remove unneeded property in pom.xml

* fix formatting

* close cache instances properly

* remove latest commit

* BAEL-1057 Introduction to rxjava-jdbc

* refactor rxjava-jdbc

* Refactor rxjava-jdbc

* Refactoring rxjava-jdbc

* BAEL-1171 java.lang.String API

* refactor rxjava-jdbc

* refactor String

* String API - move multiple classes into a single class

* move class into test package

* BAEL-1171 String.lang.String API

* BAEL-1171 java.lang.String API

* BAEL-1250 Initializing Arrays in Java

* BAEL-1250 Initializing Arrays in Java

* BAEL-1250 Initializing Arrays in Java

* small fix

* BAEL-1171 java.lang.String API

* BAEL-1263 Daemon Threads in Java

* merge with fork

* BAEL-1263 Daemon Threads in Java

* fix compilation error

* BAEL-1309 Append Data to a File with Java

* fix build fails

* fix test error

* fix build failures

* cleanup

* fix Sneaky Runnable test

* revert sneaky runnable fix attempt

* fix test failure

* fix test failure

* fix all test failures

* fix test failure

* fix test failures

* Nested Classes in Java
This commit is contained in:
Ahmed Tawila 2017-11-25 12:18:49 +02:00 committed by Grzegorz Piwowarek
parent c8d11d0b81
commit 6435d5723a
18 changed files with 344 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
core-java-concurrency/src/main/java/com/baeldung/concurrent/daemon/NewThread.java
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@ -3,7 +3,6 @@ package com.baeldung.concurrent.daemon;
public class NewThread extends Thread {
public void run() {
long startTime = System.currentTimeMillis();
while (true) {
for (int i = 0; i < 10; i++) {

11
core-java/src/main/java/com/baeldung/nestedclass/Enclosing.java Normal file
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@ -0,0 +1,11 @@
package com.baeldung.nestedclass;
public class Enclosing {
public static class Nested {
public void test() {
System.out.println("Calling test...");
}
}
}

15
core-java/src/main/java/com/baeldung/nestedclass/NewEnclosing.java Normal file
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@ -0,0 +1,15 @@
package com.baeldung.nestedclass;
public class NewEnclosing {
void run() {
class Local {
void run() {
System.out.println("Welcome to Baeldung!");
}
}
Local local = new Local();
local.run();
}
}

11
core-java/src/main/java/com/baeldung/nestedclass/Outer.java Normal file
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@ -0,0 +1,11 @@
package com.baeldung.nestedclass;
public class Outer {
public class Inner {
public void test() {
System.out.println("Calling test...");
}
}
}

5
core-java/src/main/java/com/baeldung/nestedclass/SimpleAbstractClass.java Normal file
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@ -0,0 +1,5 @@
package com.baeldung.nestedclass;
abstract class SimpleAbstractClass {
abstract void run();
}

16
core-java/src/main/java/com/baeldung/util/StreamUtils.java Normal file
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@ -0,0 +1,16 @@
package com.baeldung.util;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringWriter;
import org.apache.commons.io.IOUtils;
public class StreamUtils {
public static String getStringFromInputStream(InputStream input) throws IOException {
StringWriter writer = new StringWriter();
IOUtils.copy(input, writer, "UTF-8");
return writer.toString();
}
}

3
core-java/src/main/resources/countries.properties Normal file
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@ -0,0 +1,3 @@
UK
US
Germany

36
core-java/src/test/java/com/baeldung/file/FileOutputStreamTest.java Normal file
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@ -0,0 +1,36 @@
package com.baeldung.file;
import static org.assertj.core.api.Assertions.assertThat;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import org.junit.After;
import org.junit.Test;
import com.baeldung.util.StreamUtils;
public class FileOutputStreamTest {
public static final String fileName = "src/main/resources/countries.properties";
@Test
public void whenAppendToFileUsingFileOutputStream_thenCorrect() throws Exception {
FileOutputStream fos = new FileOutputStream(fileName, true);
fos.write("Spain\r\n".getBytes());
fos.close();
assertThat(StreamUtils.getStringFromInputStream(
new FileInputStream(fileName)))
.isEqualTo("UK\r\n" + "US\r\n" + "Germany\r\n" + "Spain\r\n");
}
@After
public void revertFile() throws IOException {
PrintWriter writer = new PrintWriter(fileName);
writer.print("UK\r\n" + "US\r\n" + "Germany\r\n");
writer.close();
}
}

37
core-java/src/test/java/com/baeldung/file/FileUtilsTest.java Normal file
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@ -0,0 +1,37 @@
package com.baeldung.file;
import static org.assertj.core.api.Assertions.assertThat;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.nio.charset.StandardCharsets;
import org.apache.commons.io.FileUtils;
import org.junit.After;
import org.junit.Test;
import com.baeldung.util.StreamUtils;
public class FileUtilsTest {
public static final String fileName = "src/main/resources/countries.properties";
@Test
public void whenAppendToFileUsingFiles_thenCorrect() throws IOException {
File file = new File(fileName);
FileUtils.writeStringToFile(file, "Spain\r\n", StandardCharsets.UTF_8, true);
assertThat(StreamUtils.getStringFromInputStream(
new FileInputStream(fileName)))
.isEqualTo("UK\r\n" + "US\r\n" + "Germany\r\n" + "Spain\r\n");
}
@After
public void revertFile() throws IOException {
PrintWriter writer = new PrintWriter(fileName);
writer.print("UK\r\n" + "US\r\n" + "Germany\r\n");
writer.close();
}
}

40
core-java/src/test/java/com/baeldung/file/FileWriterTest.java Normal file
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@ -0,0 +1,40 @@
package com.baeldung.file;
import static org.assertj.core.api.Assertions.assertThat;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import org.junit.After;
import org.junit.Test;
import com.baeldung.util.StreamUtils;
public class FileWriterTest {
public static final String fileName = "src/main/resources/countries.properties";
@Test
public void whenAppendToFileUsingFileWriter_thenCorrect() throws IOException {
FileWriter fw = new FileWriter(fileName, true);
BufferedWriter bw = new BufferedWriter(fw);
bw.write("Spain");
bw.newLine();
bw.close();
assertThat(
StreamUtils.getStringFromInputStream(
new FileInputStream(fileName)))
.isEqualTo("UK\r\n" + "US\r\n" + "Germany\r\n" + "Spain\n");
}
@After
public void revertFile() throws IOException {
PrintWriter writer = new PrintWriter(fileName);
writer.print("UK\r\n" + "US\r\n" + "Germany\r\n");
writer.close();
}
}

36
core-java/src/test/java/com/baeldung/file/FilesTest.java Normal file
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@ -0,0 +1,36 @@
package com.baeldung.file;
import static org.assertj.core.api.Assertions.assertThat;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
import org.junit.After;
import org.junit.Test;
import com.baeldung.util.StreamUtils;
public class FilesTest {
public static final String fileName = "src/main/resources/countries.properties";
@Test
public void whenAppendToFileUsingFiles_thenCorrect() throws IOException {
Files.write(Paths.get(fileName), "Spain\r\n".getBytes(), StandardOpenOption.APPEND);
assertThat(StreamUtils.getStringFromInputStream(
new FileInputStream(fileName)))
.isEqualTo("UK\r\n" + "US\r\n" + "Germany\r\n" + "Spain\r\n");
}
@After
public void revertFile() throws IOException {
PrintWriter writer = new PrintWriter(fileName);
writer.print("UK\r\n" + "US\r\n" + "Germany\r\n");
writer.close();
}
}

48
core-java/src/test/java/com/baeldung/file/GuavaTest.java Normal file
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@ -0,0 +1,48 @@
package com.baeldung.file;
import static org.assertj.core.api.Assertions.assertThat;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.PrintWriter;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.baeldung.util.StreamUtils;
import com.google.common.base.Charsets;
import com.google.common.io.CharSink;
import com.google.common.io.FileWriteMode;
import com.google.common.io.Files;
public class GuavaTest {
public static final String fileName = "src/main/resources/countries.properties";
@Before
public void setup() throws Exception {
PrintWriter writer = new PrintWriter(fileName);
writer.print("UK\r\n" + "US\r\n" + "Germany\r\n");
writer.close();
}
@Test
public void whenAppendToFileUsingGuava_thenCorrect() throws IOException {
File file = new File(fileName);
CharSink chs = Files.asCharSink(file, Charsets.UTF_8, FileWriteMode.APPEND);
chs.write("Spain\r\n");
assertThat(StreamUtils.getStringFromInputStream(
new FileInputStream(fileName)))
.isEqualTo("UK\r\n" + "US\r\n" + "Germany\r\n" + "Spain\r\n");
}
@After
public void revertFile() throws IOException {
PrintWriter writer = new PrintWriter(fileName);
writer.print("UK\r\n" + "US\r\n" + "Germany\r\n");
writer.close();
}
}

16
core-java/src/test/java/com/baeldung/nestedclass/AnonymousInnerTest.java Normal file
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@ -0,0 +1,16 @@
package com.baeldung.nestedclass;
import org.junit.Test;
public class AnonymousInnerTest {
@Test
public void whenRunAnonymousClass_thenCorrect() {
SimpleAbstractClass simpleAbstractClass = new SimpleAbstractClass() {
void run() {
System.out.println("Running Anonymous Class...");
}
};
simpleAbstractClass.run();
}
}

13
core-java/src/test/java/com/baeldung/nestedclass/InnerClassTest.java Normal file
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@ -0,0 +1,13 @@
package com.baeldung.nestedclass;
import org.junit.Test;
public class InnerClassTest {
@Test
public void givenInnerClassWhenInstantiating_thenCorrect() {
Outer outer = new Outer();
Outer.Inner inner = outer.new Inner();
inner.test();
}
}

12
core-java/src/test/java/com/baeldung/nestedclass/LocalClassTest.java Normal file
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@ -0,0 +1,12 @@
package com.baeldung.nestedclass;
import org.junit.Test;
public class LocalClassTest {
@Test
public void whenTestingLocalClass_thenCorrect() {
NewEnclosing newEnclosing = new NewEnclosing();
newEnclosing.run();
}
}

12
core-java/src/test/java/com/baeldung/nestedclass/NestedClassTest.java Normal file
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@ -0,0 +1,12 @@
package com.baeldung.nestedclass;
import org.junit.Test;
public class NestedClassTest {
@Test
public void whenInstantiatingStaticNestedClass_thenCorrect() {
Enclosing.Nested nested = new Enclosing.Nested();
nested.test();
}
}

32
core-java/src/test/java/com/baeldung/nestedclass/NewOuterTest.java Normal file
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@ -0,0 +1,32 @@
package com.baeldung.nestedclass;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
public class NewOuterTest {
int a = 1;
static int b = 2;
public class InnerClass {
int a = 3;
static final int b = 4;
@Test
public void whenShadowing_thenCorrect() {
assertEquals(3, a);
assertEquals(4, b);
assertEquals(1, NewOuterTest.this.a);
assertEquals(2, NewOuterTest.b);
assertEquals(2, NewOuterTest.this.b);
}
}
@Test
public void shadowingTest() {
NewOuterTest outer = new NewOuterTest();
NewOuterTest.InnerClass inner = outer.new InnerClass();
inner.whenShadowing_thenCorrect();
}
}