Question

CODE IN JAVA

Create a new class named Task1. In its main function, use Scanner to read integers from the keyboard with the method nextInt. Use a try catch block to capture non-integer input, and tell the user, "This is not an Integer". The program loop should end when the user enters the string "quit". (Hint: "quit" is clearly not a number and will be captured in the try / catch block.)

A typical Output Dialog is shown below:

Enter an Integer: 5
You typed.......: 5

Enter an Integer: 91
You typed.......: 91

Enter an Integer: 8.7
>>> That is not an Integer!

Enter an Integer: 34
You typed.......: 34

Enter an Integer: Isabelle
>>> That is not an Integer!

Enter an Integer: 45
You typed.......: 45

Enter an Integer: quit
::: End Program

Answer 1

import java.util.Scanner;

import java.util.*;
public class Task1
{
     public static void main(String []args)
     {
        Scanner scan = new Scanner(System.in);
        boolean flag=true;
        while(flag)
        {
            System.out.print("Enter an Integer:");
            try
            {
                int n=scan.nextInt();
                System.out.println("You typed........"+n+"\n");
            }
            catch(InputMismatchException e)         //capture error when input dont have integer value
            {
                try
                {
                    float s=scan.nextFloat();
                    System.out.println(">>>That is not an Integer!"+"\n");
                }
                catch(InputMismatchException e2)    //capture error when input dont have float value
                {
                    String s=scan.nextLine();
                    if(s.equals("quit"))            //check for end of program
                    {  
                        System.out.println("::End Program"+"\n");
                        flag=false;
                    }
                    else
                        System.out.println(">>>That is not an Integer!"+"\n");
                }
            }
        }
    }
}

output