44 lines
1.2 KiB
Java
44 lines
1.2 KiB
Java
//: gui/ComboBoxes.java
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// Using drop-down lists.
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import javax.swing.*;
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import java.awt.*;
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import java.awt.event.*;
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import static net.mindview.util.SwingConsole.*;
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public class ComboBoxes extends JFrame {
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private String[] description = {
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"Ebullient", "Obtuse", "Recalcitrant", "Brilliant",
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"Somnescent", "Timorous", "Florid", "Putrescent"
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};
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private JTextField t = new JTextField(15);
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private JComboBox c = new JComboBox();
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private JButton b = new JButton("Add items");
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private int count = 0;
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public ComboBoxes() {
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for(int i = 0; i < 4; i++)
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c.addItem(description[count++]);
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t.setEditable(false);
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b.addActionListener(new ActionListener() {
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@Override
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public void actionPerformed(ActionEvent e) {
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if(count < description.length)
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c.addItem(description[count++]);
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}
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});
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c.addActionListener(new ActionListener() {
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@Override
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public void actionPerformed(ActionEvent e) {
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t.setText("index: "+ c.getSelectedIndex() + " " +
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((JComboBox)e.getSource()).getSelectedItem());
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}
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});
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setLayout(new FlowLayout());
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add(t);
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add(c);
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add(b);
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}
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public static void main(String[] args) {
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run(new ComboBoxes(), 200, 175);
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}
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} ///:~
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