Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.BorderLayout;
import java.awt.Component;
import java.util.Vector;

import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.plaf.basic.BasicComboBoxRenderer;

public class Main extends JFrame {
    public Main() {
        Vector model = new Vector();
        model.addElement(new Item(new ImageIcon("copy16.gif"), "copy"));
        model.addElement(new Item(new ImageIcon("add16.gif"), "add"));
        model.addElement(new Item(new ImageIcon("about16.gif"), "about"));

        JComboBox comboBox;

        comboBox = new JComboBox(model);
        comboBox.setRenderer(new ItemRenderer());
        getContentPane().add(comboBox, BorderLayout.SOUTH);
    }

    public static void main(String[] args) {
        JFrame frame = new Main();
        frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    }
}

class ItemRenderer extends BasicComboBoxRenderer {
    public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected,
            boolean cellHasFocus) {
        super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);

        Item item = (Item) value;

        if (index == -1) {
            setText(item.getText());
            setIcon(null);
        } else {
            setText(item.getText());
            setIcon(item.getIcon());
        }
        return this;
    }
}

class Item {
    private Icon icon;
    private String text;

    public Item(Icon icon, String text) {
        this.icon = icon;
        this.text = text;
    }

    public Icon getIcon() {
        return icon;
    }

    public String getText() {
        return text;
    }
}