Java钩子的简单实例

package com.test;


public class ShutDownHook extends Thread {
public static void main(String[] args) {
Runtime.getRuntime().addShutdownHook(new ShutDownHook());
for (int i = 0; i < 10; i++) {
System.out.println("i=" + i);
if (i == 4) {
System.exit(0);
}
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}


public void run() {
System.out.println("hook shutdown!");
}
}