##程式碼示例

• MyTest.java

package myUtil.myUtil;

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

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


/**
 * 
 * 自我感覺最實用的執行緒，固定長度執行緒池總結
 *以及優點
 */
public class MyTest{  
	private static final Logger logger = LoggerFactory
			.getLogger(MyTest.class);
	
    public static void main(String[] argv){  
    	//建立執行緒本地變數
    	ThreadLocal<String> threadLocal = new ThreadLocal<String>();
    	/*建立可用執行緒數量的固定執行緒池*/
    	ExecutorService executorService =  Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
		executorService.execute(new Runnable() {//向執行緒池中新增執行緒
			@Override
			public void run() {//一定要捕獲子執行緒異常，不然它出軌了都不知道
				try {
				
				} catch (Exception e) {
				
				}
			}
		});
		executorService.shutdown();//一定要呼叫這個方法，不然executorService.isTerminated()永遠不為true
        while(true){//等待所有任務都結束了繼續執行
            try {
                if(executorService.isTerminated()){
                    System.out.println("所有的子執行緒都結束了！");
                    break;
                }
                Thread.sleep(1000);
            }catch (Exception e){
                e.printStackTrace();
            }
        }
	}  
}