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//线程A等待线程B的执行public class Dengdai{public static void main(String args[ ]){KThread a=new KThread ();a.threadA.start();}}class KThread implements Runnable{Thread threadA,threadB;String content[ ]={"今天晚上,","六点钟开始","在201实验室,","全班同学","上java实验！"};KThread(){(1)(2)threadB.setName("老师");}public void run(){if(Thread.currentThread()==threadA){System.out.println("我等"+threadB.getName()+"讲完我在提问！");threadB.start();while(threadB.isAlive()==false){}try{ (3) //线程threadA开始等待threadB结束}catch(InterruptedException e){}System.out.printf("\n老师:\"这个问题该怎么解决,谢谢老师\"");}else if(Thread.currentThread()==threadB){System.out.println(threadB.getName()+"说:");for(int i=0;i

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