Exercises Java with Examples-
Practice Exercises Java 4,5 5 302940

Hollow rectangle - Practice Exercises Java


Lesson 2:

Flow Control


Exercise 2.28:

Hollow rectangle


Objetive:

Write a program which asks for a symbol, a width and a height and displays a hollow rectangle of that width and that height, using that number for the outer symbol, as in this example:

Enter a symbol: 4

Enter the desired width: 3
Enter the desired height: 5

444
4 4
4 4
4 4
444


Source Code:


import java.util.*;
public class Main
{
	public static void main(String[] args)
	{
		int row, column;

		System.out.print("Enter a symbol: ");
		int symbol = Integer.parseInt(new Scanner(System.in).nextLine());

		System.out.print("Enter the desired width: ");
		int width = Integer.parseInt(new Scanner(System.in).nextLine());

		System.out.print("Enter the desired height: ");
		int height = Integer.parseInt(new Scanner(System.in).nextLine());

		System.out.println();

		for (row = 1; row <= height; row++)
		{
			for (column = 1; column <= width; column++)
			{
				if ((row == 1) || (row == height))
				{
					System.out.print(symbol);
				}
				else
				{
					if ((column == 1) || (column == width))
					{
						System.out.print(symbol);
					}
					else
					{
						System.out.print(" ");
					}
				}
			}
			System.out.println();
		}
	}
}
Exercisey 2.28

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