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//内部锁任务
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class TaskWithSync extends Task implements Runnable{
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@Override
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public void run(){
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//内部锁
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synchronized(“A”){
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doSomething();
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}
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}
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}
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这两个任务看着非常相似,应该能够产生相似的结果吧?我们建立一个模拟场景,保证同时有三个线程在运行,代码如下:
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public static void runTasks(Class<?extends Runnable>clz)throws Exception{
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ExecutorService es=Executors.newCachedThreadPool();
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System.out.println(”***开始执行”+clz.getSimpleName()+“任务****”);
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//启动三个线程
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for(int i=0;i<3;i++){
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es.submit(clz.newInstance());
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}
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//等待足够长的时间,然后关闭执行器
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TimeUnit.SECONDS.sleep(10);
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System.out.println(”––”+clz.getSimpleName()+“任务执行完毕–—\n”);
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//关闭执行器
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es.shutdown();
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}
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public static void main(String[]args)throws Exception{
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