Java URI toExternalForm()方法及示例

toExternalForm()函数是URL类的一部分。toExternalForm()函数返回一个指定的URL的字符串表示。这个字符串是通过调用这个对象的流协议处理程序的toExternalForm()函数创建的。

函数签名

public String toExternalForm()

语法

url.toExternalForm()

参数： 此函数不需要任何参数
返回类型： 此函数返回字符串类型

下面的程序说明了toExternalForm()函数的使用。

例1 ：给定一个URL，我们将对该URL的字符串进行表示

// Java program to show the
// use of the function toExternalForm()
  
import java.net.*;
  
class Solution {
    public static void main(String args[])
    {
        // url  object
        URL url = null;
  
        try {
            // create a URL
            url = new URL("https:// www.geeksforgeeks.org");
  
            // get the  ExternalForm
            String _ExternalForm = url.toExternalForm();
  
            // display the URL
            System.out.println("URL = " + url);
  
            // display the  ExternalForm
            System.out.println(" String representation= "
                               + _ExternalForm);
        }
        // if any error occurs
        catch (Exception e) {
  
            // display the error
            System.out.println(e);
        }
    }
}

输出:

URL = https:// www.geeksforgeeks.org
 String representation= https:// www.geeksforgeeks.org

例2:

// Java program to show the
// use of the function toExternalForm()
  
import java.net.*;
  
class Solution {
    public static void main(String args[])
    {
        // url  object
        URL url = null;
  
        try {
  
            // create a URL
            url= new URL("https:// www.geeksforgeeks.org#Arnab_Kundu");
              
            // get the  ExternalForm
            String _ExternalForm = url.toExternalForm();
  
            // display the URL
            System.out.println("URL = " + url);
  
            // display the  ExternalForm
            System.out.println(" String representation= "
                               + _ExternalForm);
        }
  
        // if any error occurs
        catch (Exception e) {
  
            // display the error
            System.out.println(e);
        }
    }
}

输出:

URL = https:// www.geeksforgeeks.org#Arnab_Kundu
 String representation= https:// www.geeksforgeeks.org#Arnab_Kundu