comboboxedit.java

java技术内幕源代码,配合书籍看有事半功倍的效果

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

/*
<APPLET
    CODE = comboboxedit.class
    WIDTH = 200
    HEIGHT = 200 >
</APPLET>
*/

public class comboboxedit extends JApplet implements ActionListener
{
    private JComboBox jcombobox = new JComboBox();

    public void init() 
    {
        Container contentPane = getContentPane();

        jcombobox.addItem("Item 1");
        jcombobox.addItem("Item 2");
        jcombobox.addItem("Item 3");
        jcombobox.addItem("Item 4");
        jcombobox.addItem("Item 5");

        jcombobox.setEditable(true);

        contentPane.setLayout(new FlowLayout());

        contentPane.add(jcombobox);

        jcombobox.getEditor().addActionListener(this);

    }
        
    public void actionPerformed(ActionEvent e) 
    {
        String outString = (String)jcombobox.getSelectedItem() 
            + " was changed to " + (String)jcombobox.getEditor().getItem();
        showStatus(outString);
    }
}