Assignment #97 and Area Calculator

Code

    /// Name: Lauren Baird
    /// Period: 7
    /// Program Name: Area Calculator
    /// File Name: AreaCalculator.java
    /// Date Finished: 12/17/2015
    
    import java.util.Scanner;
    
    public class AreaCalc
    {
    	public static void main( String[] args )
    	{
    		Scanner keyboard = new Scanner(System.in);
            
            System.out.println();
            System.out.println( "Shape Area Calculator" );
            
            int shape;
            
            do
            {
                System.out.println();
                System.out.println( "-=-=-=-=-=-=-=-=-=-=-=-=-=-=-" );
                System.out.println();
                System.out.println( "1. Triangle" );
                System.out.println( "2. Rectange" );
                System.out.println( "3. Square" );
                System.out.println( "4. Circle" );
                System.out.println( "5. Quit" );
                System.out.println();
                System.out.print( "Which shape? " );
                shape = keyboard.nextInt();
                System.out.println();
                
                if ( shape == 1 )
                {
                    System.out.print( "Base: ");
                    int base = keyboard.nextInt();
                    
                    System.out.print( "Height: " );
                    int height = keyboard.nextInt();
                    
                    System.out.println();
                    System.out.println( "The area is " + areaTriangle( base, height ) + "." );
                    System.out.println();
                }
                
                else if ( shape == 2 )
                {
                    System.out.print( "Length: ");
                    int length = keyboard.nextInt();
                    
                    System.out.print( "Width: " );
                    int width = keyboard.nextInt();
                    
                    System.out.println();
                    System.out.println( "The area is " + areaRectangle( length, width ) + "." );
                    System.out.println();
                }
                
                else if ( shape == 3 )
                {
                    System.out.print( "Side: ");
                    int side = keyboard.nextInt();
                    
                    System.out.println();
                    System.out.println( "The area is " + areaSquare( side ) + "." );
                    System.out.println();
                }
                
                else if ( shape == 4 )
                {
                    System.out.print( "radius: ");
                    int radius = keyboard.nextInt();
                    
                    System.out.println();
                    System.out.println( "The area is " + areaCircle( radius ) + "." );
                    System.out.println();
                }
                
                else if ( shape == 5 )
                {
                    System.out.println( "Goodbye!" );
                    System.out.println();
                }
                
                else
                    System.out.println( "ERROR" );
                
                
            } while ( shape != 5 );
     
        }
        
        public static double areaCircle( int radius ) 
        {
            double result;
            result = 3.14159265 * (radius * radius);
            return result;
        }
        
        public static int areaRectangle( int length, int width ) 
        {
            int result;
            result = (length * width);
            return result;
        }    
        
        public static int areaSquare( int side )            
        {
            int result;
            result = (side * side);
            return result;
        }    
        
        public static double areaTriangle( int base, int height )
        {
            double result;
            result = (base * height)/2;
            return result;
        }
    }