How to delete files in java

/* 使用File的delete()方法删除文件
 */
 
import java.io.*;
 
public class Exercise {
  
  public static void main(String args[]) {
    try {
      // Specify the file name and path
      File file = new File("/home/zjz/Desktop/myFile.txt");
      /* the delete() method return true if the file
      deleted successfully else it return false
       */
      if (file.delete()) {
        System.out.println(file.getName() + "is deleted");
      } else {
        System.out.println("Delete failed.");
      }
    } catch (Exception e) {
      System.out.println("Exception occured");
      e.printStackTrace();
    }
  }
 
}

public boolean delete()