使用无限大小线程池 newCachedThreadPool 可能遇到的问题

看一段测试代码： 

package com.wenniuwuren.concurrent;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

/**
 * Created by zhuyb on 16/6/16.
 */
public class newCachedThreadPoolTest {

    public static void main(String[] args) {

        ExecutorService executorService = Executors.newCachedThreadPool();
        for (int i = 1; i < 10000; i++)
            executorService.submit(new task());

    }

}

class task implements Runnable {

    @Override
    public void run() {
        try {
            Thread.sleep(5000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

    }
}

Exception in thread "main" java.lang.OutOfMemoryError: unable to create new native thread
    at java.lang.Thread.start0(Native Method)
    at java.lang.Thread.start(Thread.java:714)
    at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:950)
    at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1368)
    at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112)
    at com.wenniuwuren.concurrent.newCachedThreadPoolTest.main(newCachedThreadPoolTest.java:15)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)

使用无限大小线程池 newCachedThreadPool 可能遇到的问题

原文：http://blog.csdn.net/wenniuwuren/article/details/51700080