FutureTest.java

package FutureTest;

import java.io.File;
import java.util.Scanner;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;

public class FutureTest 
{
	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();
		
		MatchCounter counter = new MatchCounter(new File(directory), keyword);
		FutureTask<Integer> task = new FutureTask<Integer>(counter);
		Thread t = new Thread(task);
		t.start();
		try
		{
			System.out.println(task.get() + "  matching files.");
		}
		catch(ExecutionException e) { e.printStackTrace();}
		catch(InterruptedException e) {}
	}
}