W3Schools Tryit Editor

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.");
 } 
 } 
}