Assignemnt #97 and Area Calculator

Code

    ///Name: Daniel Tiffany-Appleton
    ///Period: 7
    ///Program Name: Area Calculator
    ///File Name: AreaCalculator
    ///Date finished: 2/29/16
    
    import java.util.Scanner;
    
    public class AreaCalculator
    {
        public static void main( String args[] )
        {
            Scanner keyboard = new Scanner(System.in);
            
            int choice, baseLength, heightWidth, radius;
            
            System.out.println( "Shape Area Calculator version 0.1 (c) 2015 Davis Inc." );
            System.out.println( " " );
            System.out.println( "-=-=-=-=-=-=-=-=-=-=-=-=-=-=-" );
            System.out.println( " " );
            choice = 0;
            
            while( choice != 5 )
            {
                System.out.println( "1) Triangle" );
                System.out.println( "2) Rectangle" );
                System.out.println( "3) Square" );
                System.out.println( "4) Circle" );
                System.out.println( "5) Quit" );
                System.out.print( "Which shape: " );
                choice = keyboard.nextInt();
            
                if( choice == 1 )
                {
                    System.out.print( "Base: " );
                    baseLength = keyboard.nextInt();
                    System.out.print( "Height: " );
                    heightWidth = keyboard.nextInt();
                    System.out.println( " " );
                    System.out.println( "The area is " + triangle(baseLength, heightWidth) );
                    System.out.println( " " );
                    System.out.println( "-=-=-=-=-=-=-=-=-=-=-=-=-=-=-" );
                }
                
                else if( choice == 2 )
                {
                    System.out.print( "Length: " );
                    baseLength = keyboard.nextInt();
                    System.out.print( "Width: " );
                    heightWidth = keyboard.nextInt();
                    System.out.println( " " );
                    System.out.println( "The area is " + rectangle(baseLength, heightWidth) );
                    System.out.println( " " );
                    System.out.println( "-=-=-=-=-=-=-=-=-=-=-=-=-=-=-" );
                }
                
                else if( choice == 3 )
                {
                    System.out.print( "Side length: " );
                    baseLength = keyboard.nextInt();
                    System.out.println( " " );
                    System.out.println( "The area is " + square(baseLength) );
                    System.out.println( " " );
                    System.out.println( "-=-=-=-=-=-=-=-=-=-=-=-=-=-=-" );
                }
                
                else if( choice == 4 )
                {
                    System.out.print( "Radius: " );
                    radius = keyboard.nextInt();
                    System.out.println( " " );
                    System.out.println( "The area is " + circle(radius) );
                    System.out.println( " " );
                    System.out.println( "-=-=-=-=-=-=-=-=-=-=-=-=-=-=-" );
                }
                
            }
            
            System.out.println( "Goodbye." );
            
        }
        
        public static int triangle( int baseLength, int heightWidth )
        {
            int area;
            area = baseLength * heightWidth;
            area = area / 2;
            return area;
        }
        
        public static int rectangle( int baseLength, int heightWidth )
        {
            int area;
            area = baseLength * heightWidth;
            return area;
        }
        
        public static int square( int baseLength )
        {
            int area;
            area = baseLength * baseLength;
            return area;
        }
        
        public static double circle( int radius )
        {
            double area;
            area = radius * radius;
            area = area * Math.PI;
            return area;
        }
        
    }
    

Picture of the output