Boa tarde pessoal, sou iniciante em Java e estou tendo problema com alguns exemplos de um livro, segue o código, ao compilar o arquivo ButtonTest.java me dá o erro:
"c:\java\ButtonTest.java:9: cannot find symbol
symbol : class ButtonFrame
location : class ButtonTest
ButtonFrame buttonFrame = new ButtonFrame();
^
c:\java\ButtonTest.java:9: cannot find symbol
symbol : class ButtonFrame
location : class ButtonTest
ButtonFrame buttonFrame = new ButtonFrame();
^
2 errors
por favor o que pode estar errado?
// Fig. 11.14: ButtonFrame.java
// Creating JButtons.
import java.awt.FlowLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JOptionPane;
public class ButtonFrame extends JFrame
{
private JButton plainJButton; // button with just text
private JButton fancyJButton; // button with icons
// ButtonFrame adds JButtons to JFrame
public ButtonFrame()
{
super( “Testing Buttons” );
setLayout( new FlowLayout() ); // set frame layout
plainJButton = new JButton( “Plain Button” ); // button with text
add( plainJButton ); // add plainJButton to JFrame
Icon bug1 = new ImageIcon( getClass().getResource( “bug1.gif” ) );
Icon bug2 = new ImageIcon( getClass().getResource( “bug2.gif” ) );
fancyJButton = new JButton( “Fancy Button”, bug1 ); // set image
fancyJButton.setRolloverIcon( bug2 ); // set rollover image
add( fancyJButton ); // add fancyJButton to JFrame
// create new ButtonHandler for button event handling
ButtonHandler handler = new ButtonHandler();
fancyJButton.addActionListener( handler );
plainJButton.addActionListener( handler );
} // end ButtonFrame constructor
// inner class for button event handling
private class ButtonHandler implements ActionListener
{
// handle button event
public void actionPerformed( ActionEvent event )
{
JOptionPane.showMessageDialog( ButtonFrame.this, String.format(
“You pressed: %s”, event.getActionCommand() ) );
} // end method actionPerformed
} // end private inner class ButtonHandler
} // end class ButtonFrame
// Fig. 11.15: ButtonTest.java
// Testing ButtonFrame.
import javax.swing.JFrame;
public class ButtonTest
{
public static void main( String args[] )
{
ButtonFrame buttonFrame = new ButtonFrame(); // create ButtonFrame
buttonFrame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
buttonFrame.setSize( 275, 110 ); // set frame size
buttonFrame.setVisible( true ); // display frame
} // end main
} // end class ButtonTest