技術標籤：筆記

java的callable介面的基本實現

package Thread;

import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;

import org.apache.commons.io.FileUtils;

public class DownloadPicture {
public void download(String url,String name) throws MalformedURLException, IOException {

import java.io.IOException;
import java.net.MalformedURLException;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class CallableDownload implements Callable{
private String url;
private String name;
public CallableDownload(String url, String name) {
this.url = url;
this.name = name;
}
public Boolean call() {
DownloadPicture d = new DownloadPicture();
try {
d.download(url, name);

     }
public static void main(String[] args) throws InterruptedException, ExecutionException {
	CallableDownload c1 = new CallableDownload("http://www.pptbz.com/uploadimg//pptpic/201306/2013062320262198.jpg","t1.jpg");
	CallableDownload c2 = new CallableDownload("http://www.pptbz.com/uploadimg//pptpic/201306/2013062320262198.jpg","t2.jpg");
	CallableDownload c3 = new CallableDownload("http://www.pptbz.com/uploadimg//pptpic/201306/2013062320262198.jpg","t3.jpg");
	//建立執行服務
	ExecutorService ser = Executors.newFixedThreadPool(3);
	//提交執行
	Future<Boolean> result1 = ser.submit(c1);
	Future<Boolean> result2 = ser.submit(c2);
	Future<Boolean> result3 = ser.submit(c3);
	//獲取結果
	boolean b1 = result1.get();
	boolean b2 = result1.get();
	boolean b3 = result1.get();
	//關閉服務
	ser.shutdownNow();
}

}