あまり詳しくないけどExecutorServiceのサンプル

gistfile1.java

public class Worker{
	private ExecutorService exec;

	public ExecutorService getWorker(){
		if(exec==null){
			exec = Executors.newFixedThreadPool(2); // 上限2で作成
		}
		return exec;
	}

	public void test(){
		Runnable run = new Runnable(){
			@Override
			public void run(){
				// 処理
			}
		};
		getWorker().submit(run);// このスレッドでは動作を待たない

		Callable<Object> call = new Callable<Object>(){
			@Override
			public Object call() throws Exception{
				// 処理
				return null;
			}
		};
		try{
			Object obj = getWorker().submit(call).get();// get()で処理を待つ
		}catch(InterruptedException e){
			e.printStackTrace();
		}catch(ExecutionException e){
			e.printStackTrace();
		}

	}
}