import java.io.File;

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

import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

public class ReadFile {
  public static void main(String[] args) {
    try {
      File myObj = new File("filename.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();
    }
  }
}

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;

public class WriteToFile {
  public static void main(String[] args) {
    try {
      PrintWriter myWriter = new PrintWriter("filename.txt");
      myWriter.write("Handling files in Java can be a bit tricky, but fun enough!");
      myWriter.close();
      System.out.println("Successfully wrote to the file.");
    } catch (FileNotFoundException e) {
      System.out.println("An error occurred.");
      e.printStackTrace();
    }
  }
}

import java.io.File;

public class DeleteFile {
  public static void main(String[] args) {
    File myObj = new File("filename.txt");
    if (myObj.delete()) {
      System.out.println("Deleted the file: " + myObj.getName());
    } else {
      System.out.println("Failed to delete the file.");
    }
  }
}

import java.io.File;

public class DeleteFolder {
  public static void main(String[] args) {
    File myObj = new File("C:\\Users\\MyName\\Test");
    if (myObj.delete()) {
      System.out.println("Deleted the folder: " + myObj.getName());
    } else {
      System.out.println("Failed to delete the folder.");
    }
  }
}

import java.io.File;

public class DeleteMultipleFiles {
  public static void main(String[] args) {
    File dir = new File("C:\\Users\\MyName\\Test");
    File[] files = dir.listFiles();
    for (File file : files) {
      if (file.delete()) {
        System.out.println("Deleted: " + file.getName());
      } else {
        System.out.println("Failed to delete: " + file.getName());
      }
    }
  }
}