my parnter code review

import java.util.Scanner;

public class Test {
 static boolean flag = false;
 /**
  * 获取输入数字
  * @return
  */
 public static double dataInput(){
  double stmp = 0;
  flag = false;
  try {
   Scanner sc = new Scanner(System.in);
   stmp = sc.nextDouble();
  } catch (Exception e) {
   flag = true;
   System.out.println("输入数据类型错误！请重新输入！");
   stmp = 0;
  }
  return stmp;
 }
 /**
  * 运算方法
  * @param d1
  * @param d2
  * @return
  */
 public static double division(double d1,double d2){
  double temp = 0;
  flag = false;
  try {
   temp = d1/d2;
  } catch (Exception e) {
   flag = true;
   System.out.println("除数不能为0");
   temp = 0;
  }
  return temp;
 }
 
 public static void main(String[] args) {
  double d1 = 0;
  double d2 = 0;
  while(true){
   System.out.println("----------开始-----------");
   do{
    System.out.print("请输入除数:");
    d1 = dataInput();
   }while(flag);
   
   do{
    System.out.print("请输入被除数:");
    d2 = dataInput();
   }while(flag);
   System.out.println("运算结果为："+division(d1, d2));
  }
 }
}