java线程学习例子

public class TextDemo {
public static void main(String[] args) {
RunnableEemo r1 = new RunnableEemo();
r1.REemo(r1);
System.out.println(r1.print());
}
}
class RunnableEemo extends ThreadRun implements Runnable {
Thread t2 = null;
public void REemo(RunnableEemo r1) {
Thread t1 = new Thread(r1, "第一线程 ");
System.out.println("正在运行的是" + t1);
t2 = new Thread(r1, "第二线程");
System.out.println("创建第二线程");
System.out.println("第一线程开始休眠");
t2.start();
try {
t1.sleep(400);
} catch (InterruptedException e) {
System.out.println("第一线程错误 ");
}
System.out.println("第一线程恢复运行 ");
}
public void run() {
try {
for (int i = 0; i < 800; i += 100) {
System.out.println("第二线程的休眠时间： " + i);
t2.sleep(i);
}
} catch (InterruptedException e) {
System.out.println("第二线程错误！");
}
}
}
class ThreadRun {
public String print() {
return "我是RunnableDemo的父类！";
}
}