JAVA中線程池的簡單使用

比如現在有10個線程，但每次只想運行3個線程，當這3個線程中的任何一個運行完后，第4個線程接着補上。這種情況可以使用線程池來解決，線程池用起來也相當的簡單，不信，你看：

package com.demo;

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

public class ThreadPool {    
    
    private int threadCount = 10;
    
    private int threadpoolCount = 3;
    
    public void threadPoolControl() {        
        ThreadObject[] et = new ThreadObject[threadCount];        
        ExecutorService service = Executors.newFixedThreadPool(threadpoolCount);
        Collection<ThreadObject> c = new ArrayList<ThreadObject>();
        for (int i = 0; i < threadCount; i++) {    
            et[i] = new ThreadObject();            
            c.add(et[i]);
        }
        try {
            service.invokeAll(c);
            service.shutdown();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
    
}

 

 再加上ThreadObject類，這個類主要是線程的具體實現方法：

package com.demo;

import java.util.concurrent.Callable;

public class ThreadObject implements Callable<Object>{		
	

	public Object call() throws Exception {
		//do something......
		return null;
	}

		
	
}