[Java] - 자바 숫자 금액을 한글로 변환하는 방법

#자바 숫자 금액을 한글로 변환하는 방법

 

 

예시) 매개변수: 300,000,000 => 반환값: 금삼억원정

public class MyClass {
    
        public String NumberToKor(String amt){
            
            String amt_msg = "";
            String[] arrayNum = {"", "일","이","삼","사","오","육","칠","팔","구"};
            String[] arrayUnit = {"","십","백","천","만","십만","백만","천만","억","십억","백업","천억","조","십조","백조","천조","경","십경","백경","천경","해","십해","백해","천해"};
       
            if(amt.length() > 0){
                int len = amt.length();
                
                String[] arrayStr = new String[len];
                String hanStr = "";
                String tmpUnit = "";
                for(int i = 0; i < len; i++){
                    arrayStr[i] = amt.substring(i, i+1);
                }
                int code = len;
                for(int i = 0; i < len; i++){
                    code--;
                    tmpUnit = "";
                    if(arrayNum[Integer.parseInt(arrayStr[i])] != ""){
                        tmpUnit = arrayUnit[code];
                        if(code > 4){
                            if((Math.floor(code/4) == Math.floor((code-1)/4) 
                            && arrayNum[Integer.parseInt(arrayStr[i+1])] != "") ||
                            (Math.floor(code/4) == Math.floor((code-2)/4)
                            && arrayNum[Integer.parseInt(arrayStr[i+2])] != "")) {
                                tmpUnit = arrayUnit[code].substring(0,1);
                            }
                        }
                    }
                    hanStr += arrayNum[Integer.parseInt(arrayStr[i])]+tmpUnit;
                }
                amt_msg = hanStr;
            }else{
                amt_msg = amt;
            }
         
            return amt_msg;
        }
        
        public static void main(String args[]) {
            MyClass mc = new MyClass();
            
            System.out.println("금" + mc.NumberToKor("300000000")+"원정");    
        }
}