Java_多线程_创建和使用Java自带的线程池

package test;public class MyThread implements Runnable {@Overridepublic void run() {for (int i = 0; i < 50; i++) {System.out.println(Thread.currentThread().getName() + "----->" + i);}}}

package test;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;public class Test {public static void main(String[] args) {MyThread myThread1 = new MyThread();MyThread myThread2 = new MyThread();MyThread myThread3 = new MyThread();MyThread myThread4 = new MyThread();MyThread myThread5 = new MyThread();Thread mt1 = new Thread(myThread1);Thread mt2 = new Thread(myThread2);Thread mt3 = new Thread(myThread3);Thread mt4 = new Thread(myThread4);Thread mt5 = new Thread(myThread5);// 创建一个可重用固定线程数的线程池ExecutorService executorService = Executors.newFixedThreadPool(2);// 将线程放入池中进行执行executorService.execute(mt1);executorService.execute(mt2);executorService.execute(mt3);executorService.execute(mt4);executorService.execute(mt5);// 关闭线程池executorService.shutdown();}}

输出：

pool-1-thread-2----->0
pool-1-thread-1----->0
pool-1-thread-2----->1
pool-1-thread-1----->1
pool-1-thread-2----->2
pool-1-thread-1----->2
pool-1-thread-2----->3
pool-1-thread-1----->3
pool-1-thread-1----->4
pool-1-thread-1----->5
pool-1-thread-1----->6
pool-1-thread-1----->7
pool-1-thread-1----->8
pool-1-thread-1----->9
pool-1-thread-2----->4
pool-1-thread-1----->10
pool-1-thread-2----->5
pool-1-thread-1----->11
pool-1-thread-2----->6
pool-1-thread-1----->12
pool-1-thread-2----->7
pool-1-thread-1----->13
pool-1-thread-2----->8
pool-1-thread-1----->14
pool-1-thread-2----->9
pool-1-thread-1----->15
pool-1-thread-2----->10
pool-1-thread-1----->16
pool-1-thread-2----->11
pool-1-thread-1----->17
pool-1-thread-2----->12
pool-1-thread-1----->18
pool-1-thread-2----->13
pool-1-thread-2----->14
pool-1-thread-1----->19
pool-1-thread-2----->15
pool-1-thread-1----->20
pool-1-thread-2----->16
pool-1-thread-1----->21
pool-1-thread-2----->17
pool-1-thread-1----->22
pool-1-thread-2----->18
pool-1-thread-2----->19
pool-1-thread-2----->20
pool-1-thread-1----->23
pool-1-thread-2----->21
pool-1-thread-1----->24
pool-1-thread-2----->22
pool-1-thread-1----->25
pool-1-thread-2----->23
pool-1-thread-1----->26
pool-1-thread-2----->24
pool-1-thread-1----->27
pool-1-thread-1----->28
pool-1-thread-2----->25
pool-1-thread-1----->29
pool-1-thread-2----->26
pool-1-thread-1----->30
pool-1-thread-2----->27
pool-1-thread-1----->31
pool-1-thread-2----->28
pool-1-thread-1----->32
pool-1-thread-2----->29
pool-1-thread-1----->33
pool-1-thread-2----->30
pool-1-thread-1----->34
pool-1-thread-2----->31
pool-1-thread-1----->35
pool-1-thread-2----->32
pool-1-thread-1----->36
pool-1-thread-2----->33
pool-1-thread-1----->37
pool-1-thread-2----->34
pool-1-thread-1----->38
pool-1-thread-2----->35
pool-1-thread-1----->39
pool-1-thread-2----->36
pool-1-thread-1----->40
pool-1-thread-2----->37
pool-1-thread-1----->41
pool-1-thread-2----->38
pool-1-thread-1----->42
pool-1-thread-2----->39
pool-1-thread-1----->43
pool-1-thread-2----->40
pool-1-thread-1----->44
pool-1-thread-2----->41
pool-1-thread-1----->45
pool-1-thread-2----->42
pool-1-thread-1----->46
pool-1-thread-2----->43
pool-1-thread-1----->47
pool-1-thread-2----->44
pool-1-thread-1----->48
pool-1-thread-2----->45
pool-1-thread-1----->49
pool-1-thread-2----->46
pool-1-thread-2----->47
pool-1-thread-1----->0
pool-1-thread-2----->48
pool-1-thread-1----->1
pool-1-thread-2----->49
pool-1-thread-1----->2
pool-1-thread-2----->0
pool-1-thread-1----->3
pool-1-thread-2----->1
pool-1-thread-1----->4
pool-1-thread-2----->2
pool-1-thread-1----->5
pool-1-thread-2----->3
pool-1-thread-1----->6
pool-1-thread-2----->4
pool-1-thread-1----->7
pool-1-thread-2----->5
pool-1-thread-1----->8
pool-1-thread-2----->6
pool-1-thread-1----->9
pool-1-thread-2----->7
pool-1-thread-1----->10
pool-1-thread-2----->8
pool-1-thread-1----->11
pool-1-thread-2----->9
pool-1-thread-1----->12
pool-1-thread-2----->10
pool-1-thread-1----->13
pool-1-thread-2----->11
pool-1-thread-1----->14
pool-1-thread-2----->12
pool-1-thread-1----->15
pool-1-thread-2----->13
pool-1-thread-1----->16
pool-1-thread-2----->14
pool-1-thread-1----->17
pool-1-thread-2----->15
pool-1-thread-1----->18
pool-1-thread-2----->16
pool-1-thread-1----->19
pool-1-thread-2----->17
pool-1-thread-1----->20
pool-1-thread-2----->18
pool-1-thread-1----->21
pool-1-thread-2----->19
pool-1-thread-1----->22
pool-1-thread-2----->20
pool-1-thread-1----->23
pool-1-thread-2----->21
pool-1-thread-1----->24
pool-1-thread-2----->22
pool-1-thread-1----->25
pool-1-thread-2----->23
pool-1-thread-1----->26
pool-1-thread-2----->24
pool-1-thread-1----->27
pool-1-thread-2----->25
pool-1-thread-1----->28
pool-1-thread-2----->26
pool-1-thread-1----->29
pool-1-thread-2----->27
pool-1-thread-1----->30
pool-1-thread-2----->28
pool-1-thread-1----->31
pool-1-thread-2----->29
pool-1-thread-1----->32
pool-1-thread-2----->30
pool-1-thread-1----->33
pool-1-thread-2----->31
pool-1-thread-1----->34
pool-1-thread-2----->32
pool-1-thread-1----->35
pool-1-thread-2----->33
pool-1-thread-1----->36
pool-1-thread-2----->34
pool-1-thread-1----->37
pool-1-thread-2----->35
pool-1-thread-1----->38
pool-1-thread-2----->36
pool-1-thread-1----->39
pool-1-thread-2----->37
pool-1-thread-1----->40
pool-1-thread-2----->38
pool-1-thread-1----->41
pool-1-thread-2----->39
pool-1-thread-1----->42
pool-1-thread-2----->40
pool-1-thread-1----->43
pool-1-thread-2----->41
pool-1-thread-1----->44
pool-1-thread-2----->42
pool-1-thread-1----->45
pool-1-thread-2----->43
pool-1-thread-1----->46
pool-1-thread-2----->44
pool-1-thread-1----->47
pool-1-thread-2----->45
pool-1-thread-1----->48
pool-1-thread-2----->46
pool-1-thread-1----->49
pool-1-thread-2----->47
pool-1-thread-1----->0
pool-1-thread-2----->48
pool-1-thread-1----->1
pool-1-thread-2----->49
pool-1-thread-1----->2
pool-1-thread-1----->3
pool-1-thread-1----->4
pool-1-thread-1----->5
pool-1-thread-1----->6
pool-1-thread-1----->7
pool-1-thread-1----->8
pool-1-thread-1----->9
pool-1-thread-1----->10
pool-1-thread-1----->11
pool-1-thread-1----->12
pool-1-thread-1----->13
pool-1-thread-1----->14
pool-1-thread-1----->15
pool-1-thread-1----->16
pool-1-thread-1----->17
pool-1-thread-1----->18
pool-1-thread-1----->19
pool-1-thread-1----->20
pool-1-thread-1----->21
pool-1-thread-1----->22
pool-1-thread-1----->23
pool-1-thread-1----->24
pool-1-thread-1----->25
pool-1-thread-1----->26
pool-1-thread-1----->27
pool-1-thread-1----->28
pool-1-thread-1----->29
pool-1-thread-1----->30
pool-1-thread-1----->31
pool-1-thread-1----->32
pool-1-thread-1----->33
pool-1-thread-1----->34
pool-1-thread-1----->35
pool-1-thread-1----->36
pool-1-thread-1----->37
pool-1-thread-1----->38
pool-1-thread-1----->39
pool-1-thread-1----->40
pool-1-thread-1----->41
pool-1-thread-1----->42
pool-1-thread-1----->43
pool-1-thread-1----->44
pool-1-thread-1----->45
pool-1-thread-1----->46
pool-1-thread-1----->47
pool-1-thread-1----->48
pool-1-thread-1----->49