programming for Calculator in java

WAP to create equivalent of a four function calculator. The program requires the user to enter two numbers and an operator. It then carries out the specified arithmetic operation: addition, subtraction, multiplication and division of two numbers.(using nested if statement)

1. //Ques. 4 WAP to create equivalent of a four function calculator. The
program requires the user to enter two numbers and an operator. It
then carries out the specified arithmetic operation: addition,
subtraction,multiplication and division of two numbers.(using nested if
statement)

importjava.util.Scanner;
class calculator
{
public static void main(String arr[])
{
inta,b,c,d,e,f,g;
Scanner in = new Scanner(System.in);

System.out.println("Which Operation You wanna Perform");
System.out.println("1. Addition");
System.out.println("2. Subtraction");
System.out.println("3. Multiplication");
System.out.println("4. Division \n");
c = in.nextInt();

System.out.print("\nEnter First Number = ");
a = in.nextInt();
System.out.print("Enter Second Number = ");
b = in.nextInt();
if(c==1)
{
d=a+b;

2. System.out.println("Addition is " +d);
}
else
if(c==2)
{
e=a-b;
System.out.println("Subtraction is " +e);
}
else
if(c==3)
{
f=a*b;
System.out.println("Multiplication is " +f);
}
if(c==4)
{
g=a/b;
System.out.println("Division is " +g);
}
}
}

3. OUTPUT:-