Use Java To Get Internet Resources

package yang.www;

import java.io.DataOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.MalformedURLException;
import java.net.URL;

public class URLTest
{
    public static void main(String[] args) throws IOException
    {
        URL url = new URL("http://www.oschina.net/img/logo.gif");
        File file = new File("/tmp/yang.gif");
        InputStream in = url.openStream();
        DataOutputStream out = new DataOutputStream(new FileOutputStream(file));
        int c;
        while ((c=in.read()) != -1)
        {
            out.write(c);
        }
        out.close();
        in.close();
    }
}