輸入一個正整數，將其用中文打印出來。使用java 實現

import  java.util.Scanner;

public static void main(String[]  arge){          

boolean flag = true;
Scanner input = new Scanner(System.in);
System.out.print("請輸入一個正整數：");
int a = input.nextInt();
String str = "";
String result = " ";
StringBuffer sb = new StringBuffer();
while(flag){
    if(a > 0){
        int x = a%10;
        a = a/10;
        switch(x){
            case 1:  str = "壹"; break;
            case 2:  str = "貳"; break;
            case 3:  str = "叄"; break;
            case 4:  str = "肆"; break;
            case 5:  str = "伍"; break;
            case 6:  str = "陸"; break;
            case 7:  str = "柒"; break;
            case 8:  str = "捌"; break;
            case 9:  str = "玖"; break;
        }
        sb.append(result).insert(0,str);
    }else {
        flag = false;
    }
}
System.out.println(sb.toString());
 

}