URL decoder : URLDecoder « Network « Java Tutorial

import java.net.URLDecoder;

public class MainClass {

  public static void main(String[] args) throws Exception {
    String url = "http://www.%20test.com/";
    String decoded = URLDecoder.decode(url, "UTF-8");

http://www. test.com/

19.4.1.URL decoder
19.4.2.URLDecoder 2
19.4.3.URLEncoder: space
19.4.4.URLEncoder: asterisks
19.4.6.URLEncoder: plus sign
19.4.7.URLEncoder: slashes
19.4.8.URLEncoder: quotations
19.4.9.URLEncoder: colons(:)
19.4.10.URLEncoder: tildes(~)
19.4.11.URLEncoder: parentheses()
19.4.12.URLEncoder: dot
19.4.13.URLEncoder: equal sign
19.4.14.URLEncoder: ampersands
19.4.15.Converting x-www-form-urlencoded Data
19.4.16.Parse a x-www-form-urlencoded string
19.4.17.Encode a path as required by the URL specification
19.4.18.Decoding and encoding URLs
19.4.19.Provides a method to encode any string into a URL-safe form
19.4.20.Converting text to be used within a URL
19.4.21.URL encoding