JAVA-22516 Split or move core-java-io-apis-2 module (moved-1) (#14361)

* JAVA-22516 Split or move core-java-io-apis-2 module (moved-1)

* JAVA-22516 Adding back the file after fixing the conflicts

---------

Co-authored-by: timis1 <noreplay@yahoo.com>

core-java-modules/core-java-io-apis-2/README.md

@@ -4,13 +4,5 @@ This module contains articles about core Java input/output(IO) APIs.
 
 ### Relevant Articles:
 - [Constructing a Relative Path From Two Absolute Paths in Java](https://www.baeldung.com/java-relative-path-absolute)
-- [Java Scanner Taking a Character Input](https://www.baeldung.com/java-scanner-character-input)
 - [Get the Desktop Path in Java](https://www.baeldung.com/java-desktop-path)
-- [Integer.parseInt(scanner.nextLine()) and scanner.nextInt() in Java](https://www.baeldung.com/java-scanner-integer)
-- [Difference Between FileReader and BufferedReader in Java](https://www.baeldung.com/java-filereader-vs-bufferedreader)
-- [Java: Read Multiple Inputs on Same Line](https://www.baeldung.com/java-read-multiple-inputs-same-line)
-- [Storing Java Scanner Input in an Array](https://www.baeldung.com/java-store-scanner-input-in-array)
-- [How to Take Input as String With Spaces in Java Using Scanner?](https://www.baeldung.com/java-scanner-input-with-spaces)
-- [Write Console Output to Text File in Java](https://www.baeldung.com/java-write-console-output-file)
-- [What’s the difference between Scanner next() and nextLine() methods?](https://www.baeldung.com/java-scanner-next-vs-nextline)
-- [Handle NoSuchElementException When Reading a File Through Scanner](https://www.baeldung.com/java-scanner-nosuchelementexception-reading-file)
+- [Check if a File Is Empty in Java](https://www.baeldung.com/java-check-file-empty)

core-java-modules/core-java-io-apis-2/pom.xml

@@ -92,12 +92,6 @@
             <version>7.1.0</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>org.testng</groupId>
-            <artifactId>testng</artifactId>
-            <version>7.5</version>
-            <scope>compile</scope>
-        </dependency>
     </dependencies>
     <build>
         <finalName>core-java-io-apis-2</finalName>

core-java-modules/core-java-io-apis-2/src/test/java/com/baeldung/emptyfile/CheckFileIsEmptyUnitTest.java

@@ -0,0 +1,71 @@
+package com.baeldung.emptyfile;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.NoSuchFileException;
+import java.nio.file.Path;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
+class CheckFileIsEmptyUnitTest {
+    @Test
+    void whenTheFileIsEmpty_thenFileLengthIsZero(@TempDir Path tempDir) throws IOException {
+        File emptyFile = tempDir.resolve("an-empty-file.txt")
+          .toFile();
+        emptyFile.createNewFile();
+        assertTrue(emptyFile.exists());
+        assertEquals(0, emptyFile.length());
+    }
+
+    @Test
+    void whenFileDoesNotExist_thenFileLengthIsZero(@TempDir Path tempDir) {
+        File aNewFile = tempDir.resolve("a-new-file.txt")
+          .toFile();
+        assertFalse(aNewFile.exists());
+        assertEquals(0, aNewFile.length());
+    }
+
+    boolean isFileEmpty(File file) {
+        if (!file.exists()) {
+            throw new IllegalArgumentException("Cannot check the file length. The file is not found: " + file.getAbsolutePath());
+        }
+        return file.length() == 0;
+    }
+
+    @Test
+    void whenTheFileDoesNotExist_thenIsFilesEmptyThrowsException(@TempDir Path tempDir) {
+        File aNewFile = tempDir.resolve("a-new-file.txt")
+          .toFile();
+        IllegalArgumentException ex = assertThrows(IllegalArgumentException.class, () -> isFileEmpty(aNewFile));
+        assertEquals(ex.getMessage(), "Cannot check the file length. The file is not found: " + aNewFile.getAbsolutePath());
+    }
+
+    @Test
+    void whenTheFileIsEmpty_thenIsFilesEmptyReturnsTrue(@TempDir Path tempDir) throws IOException {
+        File emptyFile = tempDir.resolve("an-empty-file.txt")
+          .toFile();
+        emptyFile.createNewFile();
+        assertTrue(isFileEmpty(emptyFile));
+
+    }
+
+    @Test
+    void whenTheFileIsEmpty_thenFilesSizeReturnsTrue(@TempDir Path tempDir) throws IOException {
+        Path emptyFilePath = tempDir.resolve("an-empty-file.txt");
+        Files.createFile(emptyFilePath);
+        assertEquals(0, Files.size(emptyFilePath));
+    }
+
+    @Test
+    void whenTheFileDoesNotExist_thenFilesSizeThrowsException(@TempDir Path tempDir) {
+        Path aNewFilePath = tempDir.resolve("a-new-file.txt");
+        assertThrows(NoSuchFileException.class, () -> Files.size(aNewFilePath));
+    }
+}

core-java-modules/core-java-io-apis-3/README.md

@@ -1,7 +0,0 @@
-## Core Java IO APIs
-
-This module contains articles about core Java input/output(IO) APIs.
-
-### Relevant Articles:
-- [Read Date in Java Using Scanner](https://www.baeldung.com/java-scanner-read-date)
-- [Check if a File Is Empty in Java](https://www.baeldung.com/java-check-file-empty)

core-java-modules/core-java-io-apis-3/pom.xml

@@ -1,15 +0,0 @@
-<?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">
-    <modelVersion>4.0.0</modelVersion>
-    <artifactId>core-java-io-apis-3</artifactId>
-    <name>core-java-io-apis-3</name>
-    <packaging>jar</packaging>
-
-    <parent>
-        <groupId>com.baeldung.core-java-modules</groupId>
-        <artifactId>core-java-modules</artifactId>
-        <version>0.0.1-SNAPSHOT</version>
-    </parent>
-</project>

core-java-modules/core-java-io-apis/README.md

@@ -10,6 +10,6 @@ This module contains articles about core Java input/output(IO) APIs.
 - [Comparing getPath(), getAbsolutePath(), and getCanonicalPath() in Java](https://www.baeldung.com/java-path)
 - [Quick Use of FilenameFilter](https://www.baeldung.com/java-filename-filter)
 - [Guide to BufferedReader](https://www.baeldung.com/java-buffered-reader)
-- [Java Scanner](https://www.baeldung.com/java-scanner)
-- [Scanner nextLine() Method](https://www.baeldung.com/java-scanner-nextline)
-- [Java Scanner hasNext() vs. hasNextLine()](https://www.baeldung.com/java-scanner-hasnext-vs-hasnextline)
+- [Difference Between FileReader and BufferedReader in Java](https://www.baeldung.com/java-filereader-vs-bufferedreader)
+- [Java: Read Multiple Inputs on Same Line](https://www.baeldung.com/java-read-multiple-inputs-same-line)
+- [Write Console Output to Text File in Java](https://www.baeldung.com/java-write-console-output-file)

core-java-modules/core-java-io-apis/pom.xml

@@ -31,6 +31,12 @@
             <version>${lombok.version}</version>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>org.testng</groupId>
+            <artifactId>testng</artifactId>
+            <version>7.5</version>
+            <scope>compile</scope>
+        </dependency>
     </dependencies>
 
     <build>

core-java-modules/core-java-io-apis/src/test/java/com/baeldung/multinput/TestMultipleInputsUnitTest.java

@@ -1,10 +1,12 @@
 package com.baeldung.multinput;
-    import java.io.ByteArrayInputStream;
-    import java.io.InputStream;
-    import java.util.InputMismatchException;
-    import org.junit.jupiter.api.Assertions;
-    import org.testng.annotations.Test;
-import com.baeldung.multinput.MultiInputs;
+
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+import java.util.InputMismatchException;
+
+import org.junit.jupiter.api.Assertions;
+import org.testng.annotations.Test;
+
 public class TestMultipleInputsUnitTest {
     @Test
     public void givenMultipleInputs_whenUsingSpaceDelimiter_thenExpectPrintingOutputs() {

core-java-modules/core-java-scanner/README.md

@@ -0,0 +1,15 @@
+## Core Java IO APIs
+
+This module contains articles about core Java input/output(IO) APIs.
+
+### Relevant Articles:
+- [Read Date in Java Using Scanner](https://www.baeldung.com/java-scanner-read-date)
+- [Java Scanner Taking a Character Input](https://www.baeldung.com/java-scanner-character-input)
+- [Integer.parseInt(scanner.nextLine()) and scanner.nextInt() in Java](https://www.baeldung.com/java-scanner-integer)
+- [Storing Java Scanner Input in an Array](https://www.baeldung.com/java-store-scanner-input-in-array)
+- [How to Take Input as String With Spaces in Java Using Scanner?](https://www.baeldung.com/java-scanner-input-with-spaces)
+- [What’s the difference between Scanner next() and nextLine() methods?](https://www.baeldung.com/java-scanner-next-vs-nextline)
+- [Handle NoSuchElementException When Reading a File Through Scanner](https://www.baeldung.com/java-scanner-nosuchelementexception-reading-file)
+- [Java Scanner](https://www.baeldung.com/java-scanner)
+- [Scanner nextLine() Method](https://www.baeldung.com/java-scanner-nextline)
+- [Java Scanner hasNext() vs. hasNextLine()](https://www.baeldung.com/java-scanner-hasnext-vs-hasnextline)

core-java-modules/core-java-scanner/pom.xml

@@ -0,0 +1,34 @@
+<?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">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>core-java-scanner</artifactId>
+    <name>core-java-scanner</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>log4j</groupId>
+            <artifactId>log4j</artifactId>
+            <version>${log4j.version}</version>
+        </dependency>
+        <dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly -->
+            <groupId>org.slf4j</groupId>
+            <artifactId>log4j-over-slf4j</artifactId>
+            <version>${org.slf4j.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>${lombok.version}</version>
+            <scope>provided</scope>
+        </dependency>
+    </dependencies>
+</project>

core-java-modules/core-java-scanner/src/test/java/com/baeldung/scannernextline/ScannerNextLineUnitTest.java

@@ -1,11 +1,11 @@
 package com.baeldung.scannernextline;
 
-import org.junit.Test;
+import static org.junit.Assert.assertEquals;
 
 import java.util.NoSuchElementException;
 import java.util.Scanner;
 
-import static org.junit.Assert.assertEquals;
+import org.junit.Test;
 
 public class ScannerNextLineUnitTest {
 

core-java-modules/pom.xml

@@ -81,7 +81,6 @@
         <module>core-java-io-4</module>
         <module>core-java-io-apis</module>
         <module>core-java-io-apis-2</module>
-        <module>core-java-io-apis-3</module>
         <module>core-java-io-conversions</module>
         <module>core-java-jar</module>
         <module>core-java-jndi</module>
@@ -125,6 +124,7 @@
         <module>core-java-properties</module>
         <module>core-java-reflection</module>
         <module>core-java-reflection-2</module>
+        <module>core-java-scanner</module>
         <module>core-java-security-2</module>
         <module>core-java-security-3</module>
         <module>core-java-security-algorithms</module>