Here you can find the source of decode(String s, String enc)
public static String decode(String s, String enc) throws UnsupportedEncodingException
//package com.java2s; /*//from w w w.jav a 2s. c om * Copyright 1999-2004 The Apache Software Foundation. * * 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.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.net.URLDecoder; public class Main { private static Method urlDecode; /** * Pass through to the {@link java.net.URLDecoder}. If running under JDK < 1.4, * default encoding will always be used. */ public static String decode(String s, String enc) throws UnsupportedEncodingException { if (urlDecode != null) { try { return (String) urlDecode.invoke(s, new Object[] { s, enc }); } catch (IllegalAccessException e) { // EMPTY } catch (InvocationTargetException e) { if (e.getTargetException() instanceof UnsupportedEncodingException) { throw (UnsupportedEncodingException) e.getTargetException(); } else if (e.getTargetException() instanceof RuntimeException) { throw (RuntimeException) e.getTargetException(); } } } return URLDecoder.decode(s); } }