Chapter 4, Problem 21.1E

Program Plan Intro

Print square using “*”

Program plan:

• Import the necessary package.
• Create a class “StarSquare.java” file,
  • Define the function “main()”,
    • Declare and initialize the necessary variables.
    • Create Scanner object to get the user input.
    • Get the side of the square from the user using “next()”.
    • Check whether the side length of the square is valid using “if” statement,
      • Subtract 2 from the value of the size of the square.
      • Execute “while” loop to print the top row with “*”.
      • Execute next “while” loop to print remaining rows with first “*” and expected number of spaces and then the last “*”.
      • Execute another “while” loop to print the last row with complete “*”.
    • Otherwise, print the invalid message.