JAVA URL类中的这个构造函数的参数是什么意思？

Question

URL
public URL(URL context,
           String spec)
    throws MalformedURLException

context参数是什么意思？

Answer 1

The path in

context是用来保存基路径的，新建的URL的路径会是context is spliced ​​together with the path in spec.
such as

URL baseURL=new URL("http://www.baidu.com");
URL url=new URL(baseURL,"img/bd_logo1.png");
String path=url.toString();//path为"www.baidu.com/img/bd_logo1.png"