java解码 编码

           String a = "sdfdsdh水电费！！！！00000";
           String e = URLEncoder.encode(a, "UTF-8");

system.out.println("编码") fdsdh%E6%B0%B4%E7%94%B5%E8%B4%B9%EF%BC%81%EF%BC%81%EF%BC%81%EF%BC%8100000
           String f=URLDecoder.decode(e, "UTF-8");//解码
           System.out.println("解码"+f); // 解码sdfdsdh水电费！！！！00000