JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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How to encode URL content in Java?


Description:

URLEncoder is a utility class for HTML form encoding. This class contains static methods for converting a String to the application/x-www-form-urlencoded MIME format. Below example shows how to encode URL content in java. This class is very useful to encode query string values.


Code:
package com.myjava.url;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

public class MyUrlEncode {

    public static void main(String a[]){
    
        try {
            System.out.println(URLEncoder.encode("String with spaces", "UTF-8"));
            System.out.println(URLEncoder.encode("special chars: &%*", "UTF-8"));
        } catch (UnsupportedEncodingException ex) {
            ex.printStackTrace();
        }
    }
}

Example Output

String+with+spaces
special+chars%3A+%26%25*

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Knowledge Centre
Domain Naming Service(DNS)
It is very difficult to remember a set of numbers (IP address) to connect to the Internet. The Domain Naming Service(DNS) is used to overcome this problem. It maps one particular IP address to a string of characters. For example, www.java2novice.com implies com is the domain name reserved for US commercial sites, java2novice is the name of the company and www is the name of the specific computer, which is java2novice's server.
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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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