java 乱码转码类

import java.io.UnsupportedEncodingException; 
 
public class CharTools {     
    /** 枚举的方式将老字符进行转码
     * @param oldStr
     *
     */ 
    public static void codeTest(String oldStr) 
    { 
        String[] oldCode={"GBK","UTF-8","GB2312","ISO-8859-1","BIG5"}; 
        String[] newCode={"GBK","UTF-8","GB2312","ISO-8859-1","BIG5"}; 
        System.out.println("====================="); 
        System.out.println("原字符："+oldStr); 
        
        try { 
            for(String one : oldCode) 
            { 
                for(String one1 : newCode) 
                { 
                    System.out.println(one+" to "+one1+"------"+new String(oldStr.getBytes(one),one1)); 
                } 
                //下面是针对前台encodeURIComponent的数据 
                System.out.println("URLDecoder("+one+")"+ java.net.URLDecoder.decode(oldStr, one)); 
            } 
        } catch (UnsupportedEncodingException e) { 
            e.printStackTrace(); 
        } 
        System.out.println("====================="); 
    } 
     
    public static void main(String[] args) { 
        CharTools.codeTest("中文"); 
    } 
 
}