Assignemnt #97, Area Calculator

Code

/// Name: Alex Pinder
/// Period: 5
/// Program Name: Area Calculator
/// File Name: prog97.java
/// Date Complete: 6/4/16

import java.util.Scanner;

public class prog97
{
    public static void main( String[] args )
    {
       Scanner keyboard = new Scanner(System.in);
       
       System.out.println( "Shape Area Calculator" );
        
        int ShapeNo = 0;
        int x, y;
        
        while ( ShapeNo != 5 )
        {
            System.out.print( "\n-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n\n1) Triangle\n2) Rectangle\n3) Square\n4) Circle\n5) Quit\nWhich shape: " );
            ShapeNo = keyboard.nextInt();
            
            if ( ShapeNo == 1 )
            {
                System.out.print( "Base: " );
                x = keyboard.nextInt();
                System.out.print( "Height: " );
                y = keyboard.nextInt();
                
                System.out.println( "\nThe area is " + areaTriangle( x, y ) + "." );
            }
           
           else if ( ShapeNo == 2 )
            {
                System.out.print( "Length: " );
                x = keyboard.nextInt();
                System.out.print( "Width: " );
                y = keyboard.nextInt();
                
                System.out.println( "\nThe area is " + areaRectangle( x, y ) + ".");
            }
            
            else if ( ShapeNo == 3 )
            {
                System.out.print( "Side length: " );
                x = keyboard.nextInt();
                
                System.out.println( "\nThe area is " + areaSquare( x ) + "." );
            }
            
            else if ( ShapeNo == 4 )
            {
                System.out.print( "Radius: " );
                x = keyboard.nextInt();
                
                System.out.println( "\nThe area is " + areaCircle( x ) + "." );
            }
            
            else if ( ShapeNo > 5 )
            {
                System.out.println( "ERROR" );
            }
        }
        
        System.out.println( "\nGoodbye" );
    }
    
    public static double areaCircle( int radius )
    {
        double areaCircle = Math.PI * radius * radius;
        
        return areaCircle;
    }
    
    public static int areaRectangle( int length, int width )
    {
        int areaRectangle = length * width;
        
        return areaRectangle;
    }
    
    public static int areaSquare( int side )
    {
        int areaSquare = side * side;
        
        return areaSquare;
    }
    
    public static double areaTriangle( int base, int height )
    {
        double areaTriangle = 0.5 * base * height;
        
        return areaTriangle;
    }
}


    

Picture of the output