Assignment #3 Shapes

/* Assignment 3 */

//Shapes.java
//Demostrates drawing different shapes.
import java.awt.Graphics;
import javax.swing.JPanel;

public class Shapes extends JPanel
{
private int choice; //user's choice of which shape to draw

//constructor sets the user's choice
public Shapes(int userChoice)
{
choice = userChoice;
} //end Shapes constructor

// draws a cascade of shapes starting from the top-left corner
public void paintComponent(Graphics g)
{
super.paintComponent(g);
for ( int i = 0; i < 10; i++)
{
//pick the shape based on the user's choice
switch (choice)
{
case 1: //draw rectangles
g.drawRect(10 + i * 10, 10 + i * 10, 50 + i * 10, 50 + i * 10 );
break;
case 2: //draw ovals
g.drawOval(10 + i * 10, 10 + i * 10, 50 + i * 10, 50 + i * 10 );
break;
} // end switch
} // end for
} // end method paintCompnent
} //end class Shapes

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/*

Test for Shapes

*/

import javax.swing.JFrame;
import javax.swing.JOptionPane;

public class ShapesTest
{
public static void main ( String args[])
{
//obtain user's choice

String input = JOptionPane.showInputDialog(
"Enter 1 to draw rectangles\n"+
"Enter 2 to draw ovals");

int choice=Integer.parseInt( input ); //converts input to int

//create the panel with the user's input
Shapes panel = new Shapes(choice);

JFrame application = new JFrame(); // creates new JFrame

application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
application.add(panel);
application.setSize(300,300);
application.setVisible(true);
}
}