jdk多线程新特性1

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package heima;

import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
/*第一题：现有的程序代码模拟产生了16个日志对象，
并且需要运行16秒才能打印完这些日志，请在程序中增加
4个线程去调用parseLog()方法来分头打印这16个日志对象
，程序只需要运行4秒即可打印完这些日志对象。
*/

public class TestThread {
private static BlockingQueue bq = new ArrayBlockingQueue(16);

public static void main(String[] args) {

  for (int i = 0; i < 4; i++) {

   new Thread(new Runnable() {

    @Override
    public void run() {
     while(true){
      try {
       String ll = (String) bq.take();
       parseLog(ll);
      } catch (InterruptedException e) {
       // TODO Auto-generated catch block
       e.printStackTrace();
      }
     }
    }

   }).start();
  }
  System.out.println("begin:" + System.currentTimeMillis() / 1000);
  for (int i = 0; i < 16; i++) {
   final String log = "" + (i + 1);
   {
    try {
     // parseLog(log);
     bq.put(log);
    } catch (Exception e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }
   }
  }
}

private static void parseLog(String log) {
  System.out.println(log + ":" + System.currentTimeMillis() / 1000);
  try {
   Thread.sleep(1000);
  } catch (InterruptedException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }

}
}