Solution :- 

import java.util.*;
class add
{
public static void main(String args[])
{
Scanner in = new Scanner(System.in);
System.out.println(“Enter the length of a Rectangle :- “);
int len= in.nextInt();
System.out.println(“Enter the Width of a Rectangle :- “);
int width = in.nextInt();
int area = len * width;
System.out.println(“The area of a rectangle is :- “+area);
}
}

Output :-