Java File类void deleteOnExit（）方法（带示例）

文件类void deleteOnExit() (File Class void deleteOnExit())

This method is available in package java.io.File.deleteOnExit().
软件包java.io.File.deleteOnExit()中提供了此方法。
This method is used to delete the file or directory when the virtual machine terminates.
虚拟机终止时，此方法用于删除文件或目录。
The return type of this method is void so it does not return anything.
此方法的返回类型为void，因此它不返回任何内容。
In this method delete file or directories in the reverse order, that means last created file or directories will be deleted first when virtual machine terminates.
在此方法中，以相反的顺序删除文件或目录，这意味着在虚拟机终止时，将首先删除最后创建的文件或目录。
This method may raise an exception (i.e. Security Exception) delete access is not given to the file.
此方法可能会引发异常(即Security Exception)，但未授予该文件访问权限。

Syntax:

句法：

    void deleteOnExit(){
}

Parameter(s):

参数：

We don't pass any object as a parameter in the method of the File.

我们不会在File方法中将任何对象作为参数传递。

Return value:

返回值：

The return type of this method is void, it does not return anything.

此方法的返回类型为void ，它不返回任何内容。

Java程序，演示deleteOnExit()方法的示例 (Java program to demonstrate example of deleteOnExit() method)

// import the File class because we will use File class methods
import java.io.File;
// import the Exception class because it may raise an 
// exception when working with files
import java.lang.Exception;
class DeleteFileOnExit {
public static void main(String[] args) {
try {
// Specify the path of file and we use double slashes to 
// escape '\' character sequence for windows otherwise 
// it will be considerable as url.
File file1 = new File("C:\\Users\\computer clinic\\OneDrive\\Articles\\myjava.txt");
// By using getAbsolutePath() return the complete 
// path of the file
String abs_path = file1.getAbsolutePath();
// Display absolute path of the file object 
System.out.println("The absolute path of the file 1 if given path is absolute :" + " " + abs_path);
// By using deleteOnExit() method to delete the file 
// when the virtual machine terminates
file1.deleteOnExit();
System.out.println("This file will delete as soon as the virtual machine terminates");
} catch (Exception e) {
System.out.println("An error occurred.");
e.printStackTrace();
}
}
}

Output

输出量

E:\Programs>javac DeleteFileOnExit.java
E:\Programs>java DeleteFileOnExit
The absolute path of the file 1 if given path is absolute : C:\Users\computer clinic\OneDrive\Articles\myjava.txt
This file will delete as soon as the virtual machine terminates