Question

import java.util.Scanner;

public class Squaring {
        public static void main(String[] args) {
                Scanner sc = new Scanner(System.in);
                int num=0;
                String s = "";
                
                while (true) {
                        System.out.println("Enter an integer greater than 1: ");
                        try {
                                // reading input
                                s = sc.nextLine();
                                // converting into int
                                num = Integer.parseInt(s);
                                break;
                        } catch (Exception e) {
                                System.out.println(s + " is not valid input.");
                        }
                }
                
                // Now we have a valid number

                // putting into square
                int square = num;
                int count = 0;
                // loop until it execced 1M
                while (square < 1000000) {
                        // printing
                        System.out.println(square);
                        // couting squares
                        count++;
                        // squre
                        square = square * square;
                }
                // printing result
                System.out.println(square);
                System.out.println(num + " exceeded 1,000,000 after " + count + " squarings.");
        }
}

What can I replace the while(true) try { and catch (exception e) with? Also my program crashes when I put 1, why?

Beginner code please

Answer 1

Dear Student ,

As per the requirement submitted above , kindly find the below solution.

Here a new java class with name "Squaring.java" is created, which contains following code.

Squaring.java :

import java.util.Scanner;//import package
//java class

public class Squaring {
   // main() method
   public static void main(String[] args) {
       // object of Scanner class
       Scanner sc = new Scanner(System.in);
       int num = 0;// declaring variable to store number
       String s = "";

       do {
           System.out.println("Enter an integer greater than 1: ");
           // reading input
           s = sc.nextLine();
           // converting into int
           num = Integer.parseInt(s);
           // checking number
           if (num <= 1) {
               // if number is less than or equal to 1
               System.out.println(s + " is not valid input.");
           }
       } while (num <= 1);

       // Now we have a valid number
       // putting into square
       long square = num;
       int count = 0;
       // loop until it exceeded 1M
       while (square < 1000000) {
           // printing
           System.out.println(square);
           // couting squares
           count++;
           // squre
           square = square * square;
       }
       // printing result
       System.out.println(square);
       System.out.println(num + " exceeded 1,000,000 after " + count + " squarings.");
   }
}

======================================================

Output : Compile and Run Squaring.java to get the screen as shown below

Screen 1 :Squaring.java

Screen 2:

NOTE : PLEASE FEEL FREE TO PROVIDE FEEDBACK ABOUT THE SOLUTION.