W3School TIY 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("已删除文件: " + myObj.getName());

    } else {

      System.out.println("删除文件失败");

    }

  }

}