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JAVA-22516 Split or move core-java-io-apis-2 module (moved-1) (eugenp#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 <[email protected]>
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‎core-java-modules/core-java-io-apis-2/README.md‎

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### Relevant Articles:
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- [Constructing a Relative Path From Two Absolute Paths in Java](https://www.baeldung.com/java-relative-path-absolute)
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- [Java Scanner Taking a Character Input](https://www.baeldung.com/java-scanner-character-input)
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- [Get the Desktop Path in Java](https://www.baeldung.com/java-desktop-path)
9-
- [Integer.parseInt(scanner.nextLine()) and scanner.nextInt() in Java](https://www.baeldung.com/java-scanner-integer)
10-
- [Difference Between FileReader and BufferedReader in Java](https://www.baeldung.com/java-filereader-vs-bufferedreader)
11-
- [Java: Read Multiple Inputs on Same Line](https://www.baeldung.com/java-read-multiple-inputs-same-line)
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- [Storing Java Scanner Input in an Array](https://www.baeldung.com/java-store-scanner-input-in-array)
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- [How to Take Input as String With Spaces in Java Using Scanner?](https://www.baeldung.com/java-scanner-input-with-spaces)
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- [Write Console Output to Text File in Java](https://www.baeldung.com/java-write-console-output-file)
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- [What’s the difference between Scanner next() and nextLine() methods?](https://www.baeldung.com/java-scanner-next-vs-nextline)
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- [Handle NoSuchElementException When Reading a File Through Scanner](https://www.baeldung.com/java-scanner-nosuchelementexception-reading-file)
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- [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

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

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

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

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

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## Core Java IO APIs
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This module contains articles about core Java input/output(IO) APIs.
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### Relevant Articles:
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- [Read Date in Java Using Scanner](https://www.baeldung.com/java-scanner-read-date)
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- [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

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This file was deleted.

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

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- [Comparing getPath(), getAbsolutePath(), and getCanonicalPath() in Java](https://www.baeldung.com/java-path)
1111
- [Quick Use of FilenameFilter](https://www.baeldung.com/java-filename-filter)
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- [Guide to BufferedReader](https://www.baeldung.com/java-buffered-reader)
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- [Java Scanner](https://www.baeldung.com/java-scanner)
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- [Scanner nextLine() Method](https://www.baeldung.com/java-scanner-nextline)
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- [Java Scanner hasNext() vs. hasNextLine()](https://www.baeldung.com/java-scanner-hasnext-vs-hasnextline)
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- [Difference Between FileReader and BufferedReader in Java](https://www.baeldung.com/java-filereader-vs-bufferedreader)
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- [Java: Read Multiple Inputs on Same Line](https://www.baeldung.com/java-read-multiple-inputs-same-line)
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- [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

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<version>${lombok.version}</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>org.testng</groupId>
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<artifactId>testng</artifactId>
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<version>7.5</version>
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<scope>compile</scope>
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</dependency>
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</dependencies>
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<build>

core-java-modules/core-java-io-apis-2/src/main/java/com/baeldung/multinput/MultiInputs.java renamed to core-java-modules/core-java-io-apis/src/main/java/com/baeldung/multinput/MultiInputs.java

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package com.baeldung.multinput;
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import java.util.InputMismatchException;
4-
import java.util.Scanner;
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public class MultiInputs {
7-
public void UsingSpaceDelimiter(){
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Scanner scanner = new Scanner(System.in);
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System.out.print("Enter two numbers: ");
10-
int num1 = scanner.nextInt();
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int num2 = scanner.nextInt();
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System.out.println("You entered " + num1 + " and " + num2);
13-
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}
15-
public void UsingREDelimiter(){
16-
Scanner scanner = new Scanner(System.in);
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scanner.useDelimiter("[\\s,]+");
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System.out.print("Enter two numbers separated by a space or a comma: ");
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int num1 = scanner.nextInt();
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int num2 = scanner.nextInt();
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System.out.println("You entered " + num1 + " and " + num2);
22-
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}
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public void UsingCustomDelimiter(){
25-
Scanner scanner = new Scanner(System.in);
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scanner.useDelimiter(";");
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System.out.print("Enter two numbers separated by a semicolon: ");
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try { int num1 = scanner.nextInt();
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int num2 = scanner.nextInt();
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System.out.println("You entered " + num1 + " and " + num2); }
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catch (InputMismatchException e)
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{ System.out.println("Invalid input. Please enter two integers separated by a semicolon."); }
33-
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}
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}
36-
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package com.baeldung.multinput;
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import java.util.InputMismatchException;
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import java.util.Scanner;
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public class MultiInputs {
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public void UsingSpaceDelimiter(){
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Scanner scanner = new Scanner(System.in);
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System.out.print("Enter two numbers: ");
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int num1 = scanner.nextInt();
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int num2 = scanner.nextInt();
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System.out.println("You entered " + num1 + " and " + num2);
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}
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public void UsingREDelimiter(){
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Scanner scanner = new Scanner(System.in);
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scanner.useDelimiter("[\\s,]+");
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System.out.print("Enter two numbers separated by a space or a comma: ");
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int num1 = scanner.nextInt();
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int num2 = scanner.nextInt();
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System.out.println("You entered " + num1 + " and " + num2);
22+
23+
}
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public void UsingCustomDelimiter(){
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Scanner scanner = new Scanner(System.in);
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scanner.useDelimiter(";");
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System.out.print("Enter two numbers separated by a semicolon: ");
28+
try { int num1 = scanner.nextInt();
29+
int num2 = scanner.nextInt();
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System.out.println("You entered " + num1 + " and " + num2); }
31+
catch (InputMismatchException e)
32+
{ System.out.println("Invalid input. Please enter two integers separated by a semicolon."); }
33+
34+
}
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}
36+

core-java-modules/core-java-io-apis-2/src/test/java/com/baeldung/bufferedreadervsfilereader/BufferedReaderUnitTest.java renamed to core-java-modules/core-java-io-apis/src/test/java/com/baeldung/bufferedreadervsfilereader/BufferedReaderUnitTest.java

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package com.baeldung.bufferedreadervsfilereader;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.nio.charset.StandardCharsets;
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import java.nio.file.Files;
11-
import java.nio.file.Path;
12-
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import org.junit.jupiter.api.Test;
14-
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class BufferedReaderUnitTest {
16-
17-
@Test
18-
void whenReadingAFile_thenReadsLineByLine() {
19-
StringBuilder result = new StringBuilder();
20-
21-
final Path filePath = new File("src/test/resources/sampleText1.txt").toPath();
22-
try (BufferedReader br = new BufferedReader(new InputStreamReader(Files.newInputStream(filePath), StandardCharsets.UTF_8))) {
23-
String line;
24-
25-
while((line = br.readLine()) != null) {
26-
result.append(line);
27-
result.append('\n');
28-
}
29-
} catch (IOException e) {
30-
e.printStackTrace();
31-
}
32-
33-
assertEquals("first line\nsecond line\nthird line\n", result.toString());
34-
}
35-
36-
}
1+
package com.baeldung.bufferedreadervsfilereader;
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3+
import static org.junit.jupiter.api.Assertions.assertEquals;
4+
5+
import java.io.BufferedReader;
6+
import java.io.File;
7+
import java.io.IOException;
8+
import java.io.InputStreamReader;
9+
import java.nio.charset.StandardCharsets;
10+
import java.nio.file.Files;
11+
import java.nio.file.Path;
12+
13+
import org.junit.jupiter.api.Test;
14+
15+
class BufferedReaderUnitTest {
16+
17+
@Test
18+
void whenReadingAFile_thenReadsLineByLine() {
19+
StringBuilder result = new StringBuilder();
20+
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final Path filePath = new File("src/test/resources/sampleText1.txt").toPath();
22+
try (BufferedReader br = new BufferedReader(new InputStreamReader(Files.newInputStream(filePath), StandardCharsets.UTF_8))) {
23+
String line;
24+
25+
while((line = br.readLine()) != null) {
26+
result.append(line);
27+
result.append('\n');
28+
}
29+
} catch (IOException e) {
30+
e.printStackTrace();
31+
}
32+
33+
assertEquals("first line\nsecond line\nthird line\n", result.toString());
34+
}
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36+
}

core-java-modules/core-java-io-apis-2/src/test/java/com/baeldung/bufferedreadervsfilereader/FileReaderUnitTest.java renamed to core-java-modules/core-java-io-apis/src/test/java/com/baeldung/bufferedreadervsfilereader/FileReaderUnitTest.java

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package com.baeldung.bufferedreadervsfilereader;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import java.io.FileReader;
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import java.io.IOException;
7-
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import org.junit.jupiter.api.Test;
9-
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class FileReaderUnitTest {
11-
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@Test
13-
void whenReadingAFile_thenReadsCharByChar() {
14-
StringBuilder result = new StringBuilder();
15-
16-
try (FileReader fr = new FileReader("src/test/resources/sampleText2.txt")) {
17-
int i = fr.read();
18-
19-
while(i != -1) {
20-
result.append((char)i);
21-
22-
i = fr.read();
23-
}
24-
} catch (IOException e) {
25-
e.printStackTrace();
26-
}
27-
28-
assertEquals("qwerty", result.toString());
29-
}
30-
}
1+
package com.baeldung.bufferedreadervsfilereader;
2+
3+
import static org.junit.jupiter.api.Assertions.assertEquals;
4+
5+
import java.io.FileReader;
6+
import java.io.IOException;
7+
8+
import org.junit.jupiter.api.Test;
9+
10+
class FileReaderUnitTest {
11+
12+
@Test
13+
void whenReadingAFile_thenReadsCharByChar() {
14+
StringBuilder result = new StringBuilder();
15+
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try (FileReader fr = new FileReader("src/test/resources/sampleText2.txt")) {
17+
int i = fr.read();
18+
19+
while(i != -1) {
20+
result.append((char)i);
21+
22+
i = fr.read();
23+
}
24+
} catch (IOException e) {
25+
e.printStackTrace();
26+
}
27+
28+
assertEquals("qwerty", result.toString());
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}
30+
}

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