ThreadPoolTest.java

package ThreadPoolTest;

import java.io.File;
import java.util.Scanner;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.FutureTask;
import java.util.concurrent.ThreadPoolExecutor;

public class ThreadPoolTest 
{
	public static void main(String[] args)
	{
		Scanner in = new Scanner(System.in);
		System.out.println("Enter base directory(e.g. /usr/local/jdk5.0/src):");
		String directory  = in.nextLine();
		System.out.println("Enter keyword(e.g. volatile):");
		String keyword = in.nextLine();
		
		ExecutorService pool = Executors.newCachedThreadPool();
		
		MatchCounter counter = new MatchCounter(new File(directory), keyword,pool);
		Future<Integer> result = pool.submit(counter);
		try
		{
			System.out.println(result.get() + "  matching files.");
		}
		catch(ExecutionException e) { e.printStackTrace();}
		catch(InterruptedException e) {}
		
		pool.shutdown();
		
		int largestPoolSize = ((ThreadPoolExecutor) pool).getLargestPoolSize();
		System.out.println("largest pool size=" + largestPoolSize);
	}
}