Task# 1 Write a program in java that takes a double value as input from user and

Question

Task# 1

Write a program in java that takes a double value as input from user and prints the square of it. Add appropriate exception handling code block in case the user provides any string other than a double value.

Sample Output:

Enter a number: 3.2

The square of the nummber is: 10.24

Enter a number: 3N

The value you provided is invalid

Task# 2

Write a program in java that asks user to enter a whole number and keeps asking in case user enters wrong input. Input checking should be done within try/catch block.

Sample Output:

Enter a whole number: forty two

Incorrect input! Try again!

Enter a whole number: fortytwo

Incorrect input! Try again!

Enter a whole number: 42

You entered: 42

Explanation / Answer

1)

import java.util.Scanner;
public class DoubleCheck{
public Double value;
public static void main(String []args){
try{
System.out.println("Enter double value");
Scanner sc=new Scanner(System.in);
value=sc.nextDouble();
value=value*value;
System.out.println("the square of entered number is",+value);
}
catch(Exception e)
{
System.out.println("Enter only double type values);
}

}
}

2)import java.util.Scanner;
public class DoubleCheck{
public int value;
boolean check=true;
public static void main(String []args){
while(check)
{
try{
System.out.println("Enter whole number");
Scanner sc=new Scanner(System.in);
value=sc.nextInt();
System.out.println("you entered",+value);
check=false;
}
catch(Exception e)
{
System.out.println("Incorrect input try again");
}

}
}
}

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