Here you can find the source of encode(final String string)
public static String encode(final String string)
//package com.java2s; /*//from w w w.j a v a 2s. c o m * Copyright 2007 the project originators. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.io.UnsupportedEncodingException; import java.net.URLEncoder; public class Main { public static final String DEFAULT_CHARACTER_ENCODING = "ISO-8859-1"; /** * URL encodes the specified string using the ISO-8859-1 encoding if applicable, otherwise the system * default encoding will be used. */ public static String encode(final String string) { return encode(string, null); } /** * URL encodes the specified string with the specified encoding. If parameter encoding is null, the ISO-8859-1 encoding * will be used if applicable, otherwise the system default encoding will be used. * * @since 2.0 (20050531) */ public static String encode(final String string, String encoding) { try { if (encoding == null) encoding = DEFAULT_CHARACTER_ENCODING; return URLEncoder.encode(string, encoding); } catch (UnsupportedEncodingException uee) { return URLEncoder.encode(string); } } }