Assignment #97 and Area Calculator

Code

    /// Name: Ali Kurland
    /// Period: 6
    /// Program Name: Area Calculator
    /// File Name: AreaCalculator.java
    /// Date Finished: 11/19/2015
    
    import java.util.Scanner;
    
    public class AreaCalculator
    {
        public static void main( String[] args )
        {
            Scanner keyboard = new Scanner(System.in);
            
            int shape;
            
            System.out.println( "Ali's Shape Area Calculator\n" );
            System.out.println( "-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n" );
            
            do
            {   
                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: " );
                shape = keyboard.nextInt();
                
                if ( shape == 1 )
                {
                    System.out.print( "\nBase: " );
                    int base = keyboard.nextInt();
                    System.out.print( "Height: " );
                    int height = keyboard.nextInt();
                    System.out.println( "\nThe area is " + areaTriangle(base,height) + "." );
                    System.out.println( "\n-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n" );
                }
                
                else if ( shape == 2 )
                {
                    System.out.print( "\nLength: " );
                    int length = keyboard.nextInt();
                    System.out.print( "Width: " );
                    int width = keyboard.nextInt();
                    System.out.println( "\nThe area is " + areaRectangle(length,width) + "." );
                    System.out.println( "\n-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n" );
                }
                
                else if ( shape == 3 )
                {
                    System.out.print( "\nSide length: " );
                    int side = keyboard.nextInt();
                    System.out.print( "\nThe area is " + areaSquare(side) + "." );
                    System.out.println( "\n-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n" );
                }
                
                else if ( shape == 4 )
                {
                    System.out.print( "\nRadius: " );
                    int radius = keyboard.nextInt();
                    System.out.println( "\nThe area is " + areaCircle(radius) + "." );
                    System.out.println( "\n-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n" );
                }
                
                else if ( shape == 5 )
                {
                    System.out.println( "\nGoodbye." );
                }
                
            } while ( shape < 5 );
        }
        
        public static double areaTriangle( int base, int height )
        {
            double A = ( base * height ) / 2;
            
            return A;
        }
        
        public static int areaRectangle( int length, int width )
        {
            int A = length * width;
            
            return A;
        }
        
        public static int areaSquare( int side )
        {
            int A = side * side;
            
            return A;
        }
        
        public static double areaCircle( int radius )
        {
            double A = Math.PI * Math.pow(radius, 2);
            
            return A;
        }
        
    }
    

Picture of the output