一个thinkin in jave中的题目。谢谢帮忙 ^^实现一个Runnable类,在run()内部打印一个消息,然后调用yield(). 重复这个操作3次,然后从run()中返回。在构造器中放置一条启动消息,并且放置一条在任务终止时的关闭消息。使用线程创建大量的这种任务并且驱动他们。
我这样写的public class ex01 implements Runnable{ /**
* @param args
*/
public ex01(){
System.out.println("construct is running");
}
public void run(){
System.out.println("run is running");
Thread.yield();
System.out.println("run is running");
Thread.yield();
System.out.println("run is running");
Thread.yield();
}
public static void main(String[] args) {
// TODO Auto-generated method stub }}
请问 在构造器中放置一条启动消息,并且放置一条在任务终止时的关闭消息。 中的 ‘并且放置一条在任务终止时的关闭消息。’ 应该怎么写?谢谢指点
我这样写的public class ex01 implements Runnable{ /**
* @param args
*/
public ex01(){
System.out.println("construct is running");
}
public void run(){
System.out.println("run is running");
Thread.yield();
System.out.println("run is running");
Thread.yield();
System.out.println("run is running");
Thread.yield();
}
public static void main(String[] args) {
// TODO Auto-generated method stub }}
请问 在构造器中放置一条启动消息,并且放置一条在任务终止时的关闭消息。 中的 ‘并且放置一条在任务终止时的关闭消息。’ 应该怎么写?谢谢指点
package com.nstc.test4;public class RunnableDemo implements Runnable {
private String startMsg;
private String endMsg; public RunnableDemo(String startMsg, String endMsg) {
super();
this.startMsg = startMsg;
this.endMsg = endMsg;
} @Override
public void run() {
System.out.println(this+startMsg+" start");
for (int i = 0; i < 3; i++) {
System.out.println("run " + i );
Thread.yield();
}
System.out.println(this+endMsg+" end");
}
public static void main(String[] args) {
RunnableDemo demo=new RunnableDemo("a","b");
Thread thread1=new Thread(demo);
thread1.start();
Thread thread2=new Thread(demo);
thread2.start();
Thread thread3=new Thread(demo);
thread3.start();
}
}