jvm 封闭处理注册方法

jvm 关闭处理注册方法
import java.lang.*;

public class TestExit{
        public static void main(String[] args){
                System.out.PRintln("my java process");
                //注册一个关机钩，当系统被退出或被异常中断时，启动这个关机钩线程
                Runtime.getRuntime().addShutdownHook(new Thread(){                                       
                                        public void run(){
                                                //添入你想在退出JVM之前要处理的必要操作代码
                                                System.out.println("T1");}
                                });
                //注册第二个关机钩               
                Runtime.getRuntime().addShutdownHook(new Thread(){
                                        public void run(){ System.out.println("T2");}
                                });

                System.exit(0);
        }
       
       
}