Program
import java.util.Scanner; //importing Scanner class
public class Main
{
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
String num1="",num2=""; //declaring two number
variables as string
int sum; //variable to store sum of numbers
int flag=0;
System.out.print("Enter first
number:");
while(flag==0){
num1=sc.next();
try{
Integer.parseInt(num1); //checking to convert the
string into integer
flag=1;
}catch(NumberFormatException e){ //if it throw an Exception
then
System.out.print("Enter first number
correctly:");
flag=0;
}
}
System.out.print("Enter second
number:");
flag=0;
while(flag==0){
num2=sc.next();
try{
Integer.parseInt(num2); //checking to convert the
string into integer
flag=1;
}catch(NumberFormatException e){ //if it throw an Exception
then
System.out.print("Enter second number
correctly:");
flag=0;
}
}
sum=Integer.parseInt(num1)+Integer.parseInt(num2); //finding
sum
System.out.println("Sum is
"+sum);
}
}
Screenshot of the code
Output
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