Does anyone have the debugging solution for this? // Phone.java // Program creat
ID: 3552338 • Letter: D
Question
Does anyone have the debugging solution for this?
// Phone.java
// Program creates a GUI that resembles a phone with functionality.
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextArea;
public class Phone extends JFrame
{
private Jbutton keyJButton[];
private JPanel keyJPanel;
private JPanel lcdJPanel;
private JTextArea lcdJTextArea;
private String lcdOutput = "";
private int count;
// constructor sets up GUI
public Phone()
{
super( "Phone" );
lcdJTextArea = new JTextArea( 4, 15 );
lcdJTextArea.setEditable( false );
lcdJPanel.add( lcdJTextArea );
keyJButton = new Jbutton[ 15 ];
// initialize all digit key Buttons
for ( int i = 3; i <= 11; i++ )
keyJButton[ i ] = new Jbutton( String.valueOf( i - 2 ) );
// initialize all non-digit key Buttons
keyJButton[ 0 ] = new Jbutton( "Send" );
keyJButton[ 1 ] = new Jbutton( "clr" );
keyJButton[ 2 ] = new Jbutton( "End" );
keyJButton[ 12 ] = new Jbutton( "*" );
keyJButton[ 13 ] = new Jbutton( "0" );
keyJButton[ 14 ] = new Jbutton( "#" );
keyJButton[ 0 ].addActionListener(
public void actionPerformed( ActionEvent e )
{
lcdOutput = "Calling... " + lcdOutput;
lcdJTextArea.setText( lcdOutput );
} // end method actionPerformed
} // end new ActionListener
// end addActionListener call
keyJButton[ 1 ].addActionListener(
new ActionListener()
{
public void actionPerformed( ActionEvent e )
{
if ( lcdOutput.length() == 0 ||
lcdOutput.substring( 0, 1 ).equals( "C" ) )
return;
else
{
lcdOutput = lcdOutput.substring( 0, ( lcdOutput.length() - 1 ) );
lcdJTextArea.setText( lcdOutput );
} // end else
} // end method actionPerformed
} // end object ActionLstener
); // end addActionListener call
keyJButton[ 2 ].addActionListener(
new ActionListener()
{
public void actionPerformed( ActionEvent e )
{
lcdJTextArea.setText( " " );
lcdOutput = "";
} // end method actionPerformed
} // end new ActionListener
); // end ActionListener call
for ( int i = 3; i <= 14; i++ )
{
keyJButton[ i ].addActionListener(
new ActionListener()
{
public void actionPerformed( ActionEvent e )
{
lcdOutput += e.getActionCommand();
if ( lcdOutput.substring( 0, 1 ).equals( "C" ) )
return;
lcdJTextArea.append( e.getActionCommand() );
} // end method actionPerformed
} // end new ActionListener
); // end addActionListener call
} // end for loop
// set keyJPanel layout to grid layout
keyJPanel = new JPanel();
keyJPanel.setLayout( new GridLayout( 5, 3 ) );
// add buttons to keyJPanel
for ( int i = 0; i <= 14; i++ )
keyJPanel.add( keyJButton[ i ] );
// add components to container
add( lcdOutput, BorderLayout.NORTH );
} // end Phone constructor
} // end class Phone
// PhoneTest.java
// Program creates a GUI that resembles a phone with functionality.
import javax.swing.JFrame;
public class PhoneTest
{
// execute application
public static void main( String args[] )
{
Phone application = new Phone();
application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
application.setSize( 200, 300 );
application.setVisible( true );
} // end main
} // end class PhoneTest
Explanation / Answer
import java.awt.BorderLayout; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JTextArea; public class Phone extends JFrame { private Jbutton keyJButton[]; private JPanel keyJPanel; private JPanel lcdJPanel; private JTextArea lcdJTextArea; private String lcdOutput = ""; private int count; // constructor sets up GUI public Phone() { super( "Phone" ); lcdJTextArea = new JTextArea( 4, 15 ); lcdJTextArea.setEditable( false ); lcdJPanel.add( lcdJTextArea ); keyJButton = new Jbutton[ 15 ]; // initialize all digit key Buttons for ( int i = 3; iRelated Questions
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