File Handling Tutorial in Java

CreateFile.java

import java.io.File;  // Import the File class

import java.io.IOException;  // Import the IOException class to handle errors

public class CreateFile {

  public static void main(String[] args) {

    try {

      File myObj = new File("khaidirkhaizuki.txt");

      if (myObj.createNewFile()) {

        System.out.println("File created: " + myObj.getName());

      } else {

        System.out.println("File already exists.");

      }

    } catch (IOException e) {

      System.out.println("An error occurred.");

      e.printStackTrace();

    }

  }

}

WriteToFile.java

import java.io.FileWriter;   // Import the FileWriter class

import java.io.IOException;  // Import the IOException class to handle errors

public class WriteToFile {

  public static void main(String[] args) {

    try {

      FileWriter myWriter = new FileWriter("khaidirkhaizuki.txt");

      myWriter.write("Welcome tomy Youtube Channel. Ingat aku ajaq free free ka. Bayaq dengan subscribe channel aku dan jangan lupa like dan share.");

      myWriter.close();

      System.out.println("Successfully wrote to the file.");

    } catch (IOException e) {

      System.out.println("An error occurred.");

      e.printStackTrace();

    }

  }

}

ReadFile.java

import java.io.File;  // Import the File class

import java.io.FileNotFoundException;  // Import this class to handle errors

import java.util.Scanner; // Import the Scanner class to read text files

public class ReadFile {

  public static void main(String[] args) {

    try {

      File myObj = new File("khaidirkhaizuki.txt");

      Scanner myReader = new Scanner(myObj);

      while (myReader.hasNextLine()) {

        String data = myReader.nextLine();

        System.out.println(data);

      }

      myReader.close();

    } catch (FileNotFoundException e) {

      System.out.println("An error occurred.");

      e.printStackTrace();

    }

  }

}

GetFileInfo.java

import java.io.File;  // Import the File class

public class GetFileInfo { 

  public static void main(String[] args) {

    File myObj = new File("khaidirkhaizuki.txt");

    if (myObj.exists()) {

      System.out.println("File name: " + myObj.getName());

      System.out.println("Absolute path: " + myObj.getAbsolutePath());

      System.out.println("Writeable: " + myObj.canWrite());

      System.out.println("Readable " + myObj.canRead());

      System.out.println("File size in bytes " + myObj.length());

    } else {

      System.out.println("The file does not exist.");

    }

  }

}