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12/31/2008 at 01:24AM PST, ID: 24017466

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9.0

Java Applet to Draw Circle or Rectangle

Asked by HRMorton in Java Programming Language

Hi,,
Just started in Java and I have to code a Java Applet that displays 2 buttons one to draw a circle and the other to draw a rectangle when pressed. When the Circle button is pressed another box is displayed for the user to enter the radius of the circle, for a rectangle it displays 2 boxes for length and breadth. Using the input I have to draw a circle or rectangle. I then need another button called Calculate which will display the area and circumference of the circle.

I'm struggling getting the additional buttons displayed.

I've added what I have so far and would appreciate any help.

thanks
Heather

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             /*
 * Assignment2.java
 *
 * Created on 15 December 2008, 18:01
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */
 
package pkgAssignment2;
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
 
/**
 *
 * @author MOR08195294
 */
public class Assignment2 extends java.applet.Applet implements ActionListener
{
    
    Font f= new Font("Timesroman",Font.PLAIN, 20);
    Font f2 = new Font("Arial",Font.ITALIC, 14);
 
    Label displayLabel, enterLabel ;
    TextField displayBox, enterBox ;
 
    Button drawCircle = new Button("Draw A Circle");
    Button drawRectangle = new Button("Draw A Rectangle");
 
    String isCircle="N", isRectangle="N";
 
    String displayString , inputString ;
 
        
    /** Initialization method that will be called after the applet is loaded
     *  into the browser.
     */
    public void init()
    {
 
        add(drawCircle);
        add(drawRectangle);
	drawCircle.addActionListener(this);
	drawRectangle.addActionListener(this);
        enterLabel = new Label ( "Enter" ) ;
        enterBox = new TextField (12 ) ;
 
    }
    
//event-handlmg code
	public void actionPerformed(ActionEvent e)
	{
		if (e.getSource()==drawCircle)
		{
			isCircle="Y";
                        isRectangle="N";
                        }
                if (e.getSource()==drawRectangle)
                {
                    isCircle="N";
                    isRectangle="Y";
                    }
        }
        
    // TODO overwrite start(), stop() and destroy() methods
	public void paint(Graphics gscreen)
	{
		gscreen.setColor(Color.red);
		if(isCircle=="Y")
		{
                    gscreen.drawString("Display Box for Circle Radius", 30,45);
                    gscreen.drawOval(85,45,75,75);
                    add ( enterLabel );
                    add (enterBox );
		}
		else if (isRectangle=="Y")
		{
			gscreen.drawString("Display Box for Rectangle Radius", 30,45);
		}
	}
}

           
         

20091028-EE-VQP-86 - Hierarchy / EE_QW_3_20080625

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Java Applet to Draw Circle or Rectangle

Asked by HRMorton in Java Programming Language

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