77 lines
2.0 KiB
Java
77 lines
2.0 KiB
Java
import java.awt.*;
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import java.awt.event.*;
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import javax.swing.*;
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/**
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* @version 1.33 2007-06-12
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* @author Cay Horstmann
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*/
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public class ComboBoxTest
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{
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public static void main(String[] args)
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{
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EventQueue.invokeLater(new Runnable()
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{
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public void run()
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{
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ComboBoxFrame frame = new ComboBoxFrame();
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frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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frame.setVisible(true);
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}
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});
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}
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}
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/**
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* A frame with a sample text label and a combo box for selecting font faces.
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*/
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class ComboBoxFrame extends JFrame
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{
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public ComboBoxFrame()
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{
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setTitle("ComboBoxTest");
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setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
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// add the sample text label
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label = new JLabel("The quick brown fox jumps over the lazy dog.");
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label.setFont(new Font("Serif", Font.PLAIN, DEFAULT_SIZE));
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add(label, BorderLayout.CENTER);
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// make a combo box and add face names
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faceCombo = new JComboBox();
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faceCombo.setEditable(true);
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faceCombo.addItem("Serif");
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faceCombo.addItem("SansSerif");
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faceCombo.addItem("Monospaced");
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faceCombo.addItem("Dialog");
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faceCombo.addItem("DialogInput");
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// the combo box listener changes the label font to the selected face name
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faceCombo.addActionListener(new ActionListener()
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{
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public void actionPerformed(ActionEvent event)
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{
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label.setFont(new Font((String) faceCombo.getSelectedItem(), Font.PLAIN,
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DEFAULT_SIZE));
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}
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});
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// add combo box to a panel at the frame's southern border
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JPanel comboPanel = new JPanel();
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comboPanel.add(faceCombo);
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add(comboPanel, BorderLayout.SOUTH);
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}
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public static final int DEFAULT_WIDTH = 300;
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public static final int DEFAULT_HEIGHT = 200;
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private JComboBox faceCombo;
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private JLabel label;
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private static final int DEFAULT_SIZE = 12;
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}
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