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使用线程池
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                            - JDk5.0起提供了線程池相關的API:ExecutorService和Executors
 - ExectorService:真正的線程池接口。常見的子類ThreadPoolExecutor 
- void execute(Runnable command):執行任務/命令,沒有返回值,一般用來執行Runnable
 - Futuresubmit(Callabletask):執行任務,有返回值,一般用來執行Callable
 - void shutdown():關閉線程池
 
  - Executors:工具類,線程池的工具類,用于創并返回不同類型的線程池
 
 
package com.zeng.gaoji;
import com.sun.prism.es2.ES2Graphics;import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;public class TestPool {public static void main(String[] args
) {ExecutorService service 
= Executors.newFixedThreadPool(10);service
.execute(new MyThread());service
.execute(new MyThread());service
.execute(new MyThread());service
.execute(new MyThread());service
.shutdown();}
}
class MyThread implements Runnable{@Overridepublic void run() {System.out
.println(Thread.currentThread().getName());}
}
 
package com.zeng.gaoji;import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;
public class ThreadNew {public static void main(String[] args
) {new MyThread01().start();new Thread(new MyThread02()).start();FutureTask<Integer>futureTask
=new FutureTask<Integer>(new MyThread03());new Thread(futureTask
).start();try {Integer integer
=futureTask
.get();System.out
.println(integer
);} catch (InterruptedException e
) {e
.printStackTrace();} catch (ExecutionException e
) {e
.printStackTrace();}}
}
class MyThread01 extends Thread{@Overridepublic void run() {System.out
.println("MyThread01");}
}
class MyThread02 implements Runnable{@Overridepublic void run() {System.out
.println("MyThread02");}
}
class MyThread03 implements Callable<Integer> {@Overridepublic Integer call()throws Exception{System.out
.println("MyThread03");return 100;}
}
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