java 數字轉漢語讀音的程序

如輸入12345，輸出：一萬二千三百四十五

public static void numToVoice(int num,StringBuffer stringBuffer){
    Map<Integer,String> map = new HashMap<Integer,String>();
    map.put(1,"一");
    map.put(2,"二");
    map.put(3,"三");
    map.put(4,"四");
    map.put(5,"五");
    map.put(6,"六");
    map.put(7,"七");
    map.put(8,"八");
    map.put(9,"九");

    map.put(10,"十");
    map.put(20,"百");
    map.put(30,"千");
    map.put(40,"萬");
    map.put(50,"十萬");

    String numstr = num + "";
    int pos = numstr.length();
    if(pos != 1){
        int high = num/(int)Math.pow(10,pos-1);
        num = num%(int)Math.pow(10,pos-1);
        int key = (pos-1)*10;
        stringBuffer.append(map.get(high)).append(map.get(key));
        numToVoice(num,stringBuffer);
    }else{
        stringBuffer.append(map.get(num));
        System.out.println(stringBuffer);
    }

}

 

程序還有瑕疵，萬以上就不行了，但願你們幫我完成，不慎感激！我本身琢磨出來的話，也會完善，謝謝！