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63 lines
1.2 KiB
Java
63 lines
1.2 KiB
Java
ComboBox Demo
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// Using a JComboBox to select an image to display.
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import java.awt.*;
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import java.awt.event.*;
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import javax.swing.*;
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public class ComboBoxTest extends JFrame {
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private JComboBox images;
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private JLabel label;
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private String names[] =
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{ "bug1.gif", "bug2.gif",
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"travelbug.gif", "buganim.gif" };
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private Icon icons[] =
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{ new ImageIcon( names[ 0 ] ),
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new ImageIcon( names[ 1 ] ),
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new ImageIcon( names[ 2 ] ),
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new ImageIcon( names[ 3 ] ) };
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public ComboBoxTest()
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{
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super( "Testing JComboBox" );
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Container c = getContentPane();
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c.setLayout( new FlowLayout() );
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images = new JComboBox( names );
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images.setMaximumRowCount( 3 );
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images.addItemListener(
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new ItemListener() {
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public void itemStateChanged( ItemEvent e )
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{
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label.setIcon(
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icons[ images.getSelectedIndex() ] );
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}
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}
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);
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c.add( images );
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label = new JLabel( icons[ 0 ] );
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c.add( label );
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setSize( 350, 100 );
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show();
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}
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public static void main( String args[] )
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{
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ComboBoxTest app = new ComboBoxTest();
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app.addWindowListener(
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new WindowAdapter() {
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public void windowClosing( WindowEvent e )
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{
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System.exit( 0 );
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}
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}
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);
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}
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}
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