Java File delete()方法

java.io.File.delete() 方法删除由抽象路径名定义的文件或目录。若要删除一个目录，该目录必须是空的。

1 语法

public boolean delete()

2 参数

无

3 返回值

如果文件已成功删除，则此方法返回true，否则返回false。

4 示例 

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
/**
 * java.io.File.delete()方法的例子
 */
import java.io.File;

public class Demo {
    public static void main(String[] args) {
        File f = null;
        boolean bool = false;

        try {
            // create new file
            f = new File("test.txt");

            // tries to delete a non-existing file
            bool = f.delete();

            // prints
            System.out.println("File deleted: "+bool);

            // creates file in the system
            f.createNewFile();

            // createNewFile() is invoked
            System.out.println("createNewFile() method is invoked");

            // tries to delete the newly created file
            bool = f.delete();

            // print
            System.out.println("File deleted: "+bool);

        } catch(Exception e) {
            // if any error occurs
            e.printStackTrace();
        }
    }
}

输出结果为：

File deleted: true
createNewFile() method is invoked
File deleted: true