JAVA线程池样例

主要抄了三种：

newSingleThreadExecutor

newCachedThreadPool()

newFixedThreadPool(int)

package demo.thread;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;public class ThreadMain {public static void main(String[] args) throws Exception {ExecutorService sexecutor = Executors.newSingleThreadExecutor();for (int i = 0; i < 5; i++) {final int no =i;Runnable runnable = new Runnable() {public void run() {try {System.out.println("Single executor into " + no);Thread.sleep(1000L);System.out.println("Single executor end " + no);} catch (InterruptedException e) {e.printStackTrace();}}};sexecutor.execute(runnable);}sexecutor.shutdown();ExecutorService cexecutor = Executors.newCachedThreadPool();for (int i = 0; i < 20; i++) {final int no =i;Runnable runnable = new Runnable() {public void run() {try {System.out.println("Cached executor into " + no);Thread.sleep(1000L);System.out.println("Cached executor end " + no);} catch (InterruptedException e) {e.printStackTrace();}}};cexecutor.execute(runnable);}cexecutor.shutdown();ExecutorService fexecutor = Executors.newFixedThreadPool(5);for (int i = 0; i < 20; i++) {final int no =i;Runnable runnable = new Runnable() {public void run() {try {System.out.println("Fixed executor into " + no);Thread.sleep(1000L);System.out.println("Fixed executor end " + no);} catch (InterruptedException e) {e.printStackTrace();}}};fexecutor.execute(runnable);}fexecutor.shutdown();System.out.println("The main thread end.");}}

Single executor into 0Cached executor into 1Cached executor into 0Cached executor into 2Cached executor into 3Cached executor into 4Cached executor into 5Cached executor into 6Cached executor into 7Cached executor into 8Cached executor into 9Cached executor into 10Cached executor into 11Cached executor into 12Cached executor into 17Cached executor into 14Cached executor into 13Cached executor into 18Cached executor into 16Cached executor into 15Cached executor into 19Fixed executor into 1Fixed executor into 2The main thread end.Fixed executor into 0Fixed executor into 4Fixed executor into 3Single executor end 0Single executor into 1Cached executor end 4Cached executor end 3Cached executor end 0Cached executor end 1Cached executor end 2Cached executor end 7Cached executor end 6Cached executor end 11Cached executor end 13Cached executor end 17Cached executor end 5Cached executor end 9Cached executor end 10Cached executor end 12Cached executor end 8Cached executor end 18Cached executor end 14Cached executor end 16Cached executor end 15Cached executor end 19Fixed executor end 1Fixed executor into 5Fixed executor end 0Fixed executor end 4Fixed executor into 7Fixed executor end 2Fixed executor into 8Fixed executor into 6Fixed executor end 3Fixed executor into 9Single executor end 1Single executor into 2Fixed executor end 5Fixed executor into 10Fixed executor end 6Fixed executor into 11Fixed executor end 7Fixed executor into 12Fixed executor end 8Fixed executor into 13Fixed executor end 9Fixed executor into 14Single executor end 2Single executor into 3Fixed executor end 10Fixed executor into 15Fixed executor end 12Fixed executor end 13Fixed executor end 11Fixed executor into 17Fixed executor into 16Fixed executor into 18Fixed executor end 14Fixed executor into 19Single executor end 3Single executor into 4Fixed executor end 15Fixed executor end 18Fixed executor end 16Fixed executor end 17Fixed executor end 19Single executor end 4