多线程之实现Runnable接口完成同步下载文件

public class Thread2 implements Runnable {
    //网络地址
    private String url;
    //保存的文件名
    private String name;
    public Thread2(String url, String name) {
        this.url = url;
        this.name = name;
    }
    //下载文件的线程执行体
    @Override
    public void run() {
        FileDownLoader fileDownLoader = new FileDownLoader();
        fileDownLoader.downLoader(url,name);
        System.out.println("下载了文件名为：" + name);
    }
    public static void main(String[] args) {
        Thread2 t1 = new Thread2("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=1887333225,3220403259&fm=26&gp=0.jpg","紫霞仙子.jpg");
        Thread2 t2 = new Thread2("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=1115306696,372850764&fm=26&gp=0.jpg","冰霜恋舞曲.jpg");
        Thread2 t3 = new Thread2("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=3005655293,1504161907&fm=26&gp=0.jpg","元素使.jpg");
        //开启线程
        new Thread(t1).start();
        new Thread(t2).start();
        new Thread(t3).start();
    }
}

//下载器
class FileDownLoader{
    // 下载方法
    public  void downLoader(String url,String name) {
        try {
            FileUtils.copyURLToFile(new URL(url),new File(name));
        } catch (IOException e) {
            e.printStackTrace();
            System.out.println("IO异常：downLoader方法出错");
        }
    }
}