exceptiontester4.java

Java与面向对象程序设计实验教学讲义.复数类的实现,复数类的复杂运算,身份证号码的分析,图形界面设计

import java.io.*;
public class ExceptionTester4 {
 public static void main(String args[]) {
   int       result;
   int       number[] = new int[2];
   boolean   valid;

   for (int i=0; i<2; i++) {
      valid = false;
      while (!valid) {
         try {
             System.out.println("Enter　number "+(i+1));
             number[i]=Integer.valueOf(Keyboard.getString()).intValue();
             valid = true;
         }catch (NumberFormatException e) {
             System.out.println("Invalid integer entered. Please try again.");
         }
       }
   }

   try {
    result = number[0] / number[1];
    System.out.print(number[0] + " / " + number[1] + "=" + result);
   } catch (ArithmeticException e) {
        System.out.println("Second number is 0, cannot do division!");
   }
 }
}