檢索添加了用戶輸入

Question

一個網站，我讀了檢索Java中的網頁，它是快速的使用方法：

URL url = new URL("http://example.com"); 
HttpURLConnection connection = (HttpURLConnection)url.openConnection(); 
connection.setRequestMethod("GET"); 
connection.connect(); 

InputStream stream = connection.getInputStream(); 
// read the contents using an InputStreamReader 

但我怎麼添加用戶到URL給一個變量？例如：

用戶輸入x 加載頁面http://example.com/x.php

我是新來的Java，所以任何幫助，將不勝感激。

Answer 1

URL url = new URL("http://example.com"); 
HttpURLConnection connection = (HttpURLConnection)url.openConnection(); 
URL urlWithInput = new URL("http://example.com" + input); 
connection.setRequestMethod("GET"); 
connection.connect();  
InputStream stream = connection.getInputStream();  

或者

String url = "http://example.com" + "/" + input 
HttpURLConnection connection = (HttpURLConnection)url.openConnection(); 
URL urlWithInput = new URL(url); 
connection.setRequestMethod("GET"); 
connection.connect();  
InputStream stream = connection.getInputStream();  

Answer 2

您可以使用字符串連接這樣的：

final String url = "http://example.com" + "/" + userInput 

然後你就可以實例化URL與字符串。