java线程当中的join()方法的使用(实例)：

• 程序代码：
• 代码运行效果视频：

package homework10.homework1014;

public class Demo {
    public static void main(String[] args) {
        Thread down = new Thread(()->{
            System.out.println("开始下载图片!");
            for(int i=0;i<=100;i++){
                try {
                    Thread.sleep(50);
                    System.out.println("图片下载进度:"+i+"%");
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            System.out.println("下载完毕!!!");
        });
        Thread show = new Thread(()->{
            System.out.println("开始显示图片!");
            try {
                down.join();
            } catch (InterruptedException e1) {
                e1.printStackTrace();
            }
            for(int i=0;i<=100;i++){
                try {
                    Thread.sleep(50);
                    System.out.println("图片显示进度:"+i+"%");
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            System.out.println("图片显示完毕!!!");
        });
        down.start();
        show.start();
    }
}

java线程当中的join()方法的示例