package edu.buffalostate.cis$425.$sp$24.$put$-$your$-$username$-$here;

$/**$

$*$ File: MeFirstPanel.java

$*$

$*$ Description: This class defines a GUI in a JPanel which contains

$*$ two JButton with initial labels $"$Me first!" and $"$Me next!".

$*$ Pressing either button causes the labels to be exchanged.

$*$

$*$ Requirements

$*1)$ Add a third button to the panel, with the label "third"

$*2)$ Every time any of the buttons are pressed, the labels

$*$ should shift one place to the right first$->$second$->$third

$*$ would shift to third$->$first$->$second when one of the buttons

$*$ was pressed

$*/$

$/**$

$*$

$*$ @author put$-$your$-$name$-$here

$*$

$*/$

import javax.swing.$*$;

import java.awt.event.$*$;

public class MeFirstPanel extends JPanel implements ActionListener $\{$

private JButton aButton;

private JButton bButton;

$//$ add button here

String aText $=$ "first";

String bText $=$ "second";

$//$ add string here

String tempText; $//$ To use to exchange labels

public MeFirstPanel$()\{$

aButton $=$ new JButton$($aText$)$;

aButton.addActionListener$($this$)$; $//$ add event handler

bButton $=$ new JButton$($bText$)$;

bButton.addActionListener$($this$)$; $//$ add event handler

add$($aButton$)$; $//$ add button to JPanel

add$($bButton$)$; $//$ add button to JPanel

$\}//$ End MeFirstPanel$()$

$/**$

$*$ actionPerformed

$*$ @param e button clicked

$*/$

public void actionPerformed$($ActionEvent e$)\{$

tempText $=$ aText; $//$ Exchange the strings

aText $=$ bText;

bText $=$ tempText;

$//$ add code here

aButton.setText$($aText$)$; $//$ Set button labels

bButton.setText$($bText$)$;

$//$ add code here

$\}//$ EndactionPeformed$()$

$\}//$ End MeFirstPanel class

package edu.buffalostate.cis$425.$fa$21.$exercises.put$-$your$-$lastname$-$here;

$/**$

$*$ File: MeFirstApp.java

$*$

$*$ Description: This app creates a MeFirstPanel and

$*$ adds it to the app's content pane.

$*$

$*$ Assignment: see MeFirstPanel.java

$*$

$*/$

$/**$

$*$

$*$ @author put$-$your$-$name$-$here

$*$

$*/$

import javax.swing.$*$;

public class MeFirstApp extends JFrame $\{$

private static final long serialVersionUID $=1$L;

public MeFirstApp$()\{$

setSize$(200,200)$;

getContentPane$().$add$($new MeFirstPanel$())$;

$//$register 'Exit upon closing' as a default close operation

setDefaultCloseOperation$($ EXIT$\_$ON$\_$CLOSE $)$;

$\}//$ End MeFirstApp

public static void main$($String args$[])\{$

MeFirstApp b $=$ new MeFirstApp$()$;

b$.$setVisible$($true$)$;

$\}//$ End main$()$

$\}//$ End MeFirstApp class