第九章线程的实例.docx

例9.2使用继承创建线程

publicclassMyThreadextendsThread{privatestaticintcount=0;publicMyThread(Stringname)

{super(name);}

publicstaticvoidmain(String[]args)throws

InterruptedException

{

MyThreadp=newMyThread(t1);p.start();

for(inti=0;i5;i++)

{

count++;System.out.println(count+:main);

}

}

publicvoidrun()

{

for(inti=0;i5;i++)

{

count++;System.out.println(count+:+this.getName());

}

}

}

运行结果：

1:main3:main2:t1

4:t1

5:t1

6:t1

7:t1

8:main9:main10:main

例9.3使用接口创建线程

publicclassMyThread2implementsRunnable{

intcount=1,number;

publicMyThread2(inti){number=i;

System.out.println(创建线程+number);

}

publicvoidrun(){

while(true){

System.out.println(线程+number+：计数

+count);

if(++count==6)return;

}

}

publicstaticvoidmain(String[]args){

for(inti=0;i5;i++)

newThread(newMyThread2(i+1)).start();

}

}

/*{MyThread2newthread=newMyThread2(i+1);Threadth=newThread(newthread);

th.start();}*/

运行结果：

创建线程1创建线程2创建线程3创建线程4

线程1：计数1线程1：计数2线程1：计数3线程1：计数4线程1：计数5线程2：计数1线程3：计数1线程3：计数2线程3：计数3线程3：计数4线程3：计数5线程2：计数2线程2：计数3线程2：计数4

线程2：计数5创建线程5

线程4：计数1线程4：计数2线程4：计数3线程4：计数4线程4：计数5线程5：计数1线程5：计数2线程5：计数3线程5：计数4线程5：计数5

例9.4 线程优先级

publicclassThreadTest{

publicstaticvoidmain(Stringargs[]){

System.out.println(Thread.currentThread().getName()

+start.);

Threadt1=newMyThread(T1);t1.setPriority(Thread.MIN_PRIORITY);t1.start();

System.out.println(Iamhere);Threadt4=newMyThread(T4);t4.setPriority(7);

t4.start();

Threadt2=newMyThread(T2);t2.setPriority(Thread.NORM_PRIORITY);t2.start();

Threadt3=newMyThread(T3);

t3.setPriority(Thread.MAX_PRIORITY);t3.start(); }

}

classMyThreadextendsThread{Stringmessage;

MyThread(Stringmessage){

this.message=message;

}

publicvoidrun(){

for(inti=0;i3;i++)System.out.println(message+

+getPriority());

}}

运行结果：

mainstart.

Iamhere

T4

7

T4

7

T4

7

T2

5

T2

5

T2

5

T3

10

T3

10

T3

10

T1

1

T1

1

T1

1

例9.3使用接口创建线程

publicclassInterruptTestextendsThread{

staticintresult=