import java.util.Scanner;

class Jan29 {
	public static void main(String[] args) {

		System.out.println("Hello");	

		/******************************************
		  Compute area of square 
                  whose side is length 10
		********************************************/

		int sideLength = 10;
		int area = sideLength * sideLength;

		// 3 ways to print the area to the screen
		System.out.printf("Area: %d\n", area);
		System.out.println("Area: " + area);
		System.out.print("Area: " + area + "\n");

		/******************************************
		   Compute the area of a square
		   whose side length is entered by the user 
		********************************************/

		// Create an instance of the Scanner
		// that can read from the keyboard
		Scanner myScanner = new Scanner(System.in);

		// Ask the user for data
		System.out.print("Enter length of square: ");
		
		// Read an integer from the keyboard
		int myLength = myScanner.nextInt();

		int myArea = myLength * myLength;

		System.out.printf("Area: %d\n", myArea);	

	} // end of main
} // end of class