RendererSample.java Source code

Introduction

Here is the source code for RendererSample.java

Source

/*
Definitive Guide to Swing for Java 2, Second Edition
By John Zukowski       
ISBN: 1-893115-78-X
Publisher: APress
*/

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellRenderer;

public class RendererSample {

    public static void main(String args[]) {
        Object rows[][] = { { "one", "ichi - \u4E00" }, { "two", "ni - \u4E8C" }, { "three", "san - \u4E09" },
                { "four", "shi - \u56DB" }, { "five", "go - \u4E94" }, { "six", "roku - \u516D" },
                { "seven", "shichi - \u4E03" }, { "eight", "hachi - \u516B" }, { "nine", "kyu - \u4E5D" },
                { "ten", "ju - \u5341" } };
        Object headers[] = { "English", "Japanese" };
        JFrame frame = new JFrame("Renderer Sample");
        JTable table = new JTable(rows, headers);
        TableCellRenderer renderer = new EvenOddRenderer();
        table.setDefaultRenderer(Object.class, renderer);
        JScrollPane scrollPane = new JScrollPane(table);
        frame.getContentPane().add(scrollPane, BorderLayout.CENTER);
        frame.setSize(300, 150);
        frame.setVisible(true);
    }
}

class EvenOddRenderer implements TableCellRenderer {

    public static final DefaultTableCellRenderer DEFAULT_RENDERER = new DefaultTableCellRenderer();

    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,
            int row, int column) {
        Component renderer = DEFAULT_RENDERER.getTableCellRendererComponent(table, value, isSelected, hasFocus, row,
                column);
        ((JLabel) renderer).setOpaque(true);
        Color foreground, background;
        if (isSelected) {
            foreground = Color.yellow;
            background = Color.green;
        } else {
            if (row % 2 == 0) {
                foreground = Color.blue;
                background = Color.white;
            } else {
                foreground = Color.white;
                background = Color.blue;
            }
        }
        renderer.setForeground(foreground);
        renderer.setBackground(background);
        return renderer;
    }
}