1import java.util.Scanner;
2public class SquarePerimeter
3{
4 public static void main(String[] args)
5 {
6 int side, perimeter;
7 Scanner sc = new Scanner(System.in);
8 System.out.print("Please enter side length of square: ");
9 side = sc.nextInt();
10 perimeter = 4 * side;
11 System.out.print("Perimeter of square is: " + perimeter);
12 sc.close();
13 }
14}
1java program to calculate area of square
2import java.util.Scanner;
3public class FindAreaOfSquare
4{
5 public static void main(String[] args)
6 {
7 Scanner sc = new Scanner(System.in);
8 System.out.println("Please enter side of square: ");
9 double side = sc.nextDouble();
10 // formula area of square = side * side
11 double area = side * side;
12 System.out.println("Area of square is: " + area);
13 sc.close();
14 }
15}