Best books about JAVA programming:

• Head First JAVA, Second Editon
• Effective Java Programming Language Guide
• Professional Java, JDK 5 Edition
• Ivor Horton's Beginning Java 2, JDK 5 Edition

JAVA JList Checkbox

The following code add checkbox to JList.

/*Example modified from http://www.crionics.com/products/opensource/faq/swing_ex/JTableExamples2.html
*/



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

 

public class ToolTipListExample extends JFrame {

public ToolTipListExample() {
super("ToolTip Example");

String[][] strs = {{"Acinonyx jutatus","Cheetah"},
{"Panthera leo" ,"Lion ToolTip" },
{"Canis lupus" ,"Wolf ToolTip" },
{"Lycaon pictus" ,"Llycaon ToolTip"},
{"Vulpes Vulpes" ,"Fox ToolTip" }};

JList list = new JList( createItems(strs) ) {
public String getToolTipText(MouseEvent e) {
int index = locationToIndex(e.getPoint());
if (-1 < index) {
ToolTipItem item = (ToolTipItem)getModel().getElementAt(index);
return item.getToolTipText();
} else {
//return super.getToolTipText();
return null;
}
}
};
list.setToolTipText("");

getContentPane().add(new JScrollPane(list), BorderLayout.CENTER);
}

Object[] createItems(String[][] strs) {
ToolTipItem[] items = new ToolTipItem[strs.length];
for (int i=0;i<strs.length;i++) {
items[i] = new ToolTipItem(strs[i][0], strs[i][1]);
}
return items;
}

class ToolTipItem {
String obj;
String toolTipText;

public ToolTipItem(String obj, String text) {
this.obj = obj;
this.toolTipText = text;
}

public String getToolTipText() {
return toolTipText;
}

public String toString() {
return obj;
}
}

public static void main(String args[]) {
ToolTipListExample frame = new ToolTipListExample();
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {System.exit(0);}
});
frame.setSize(140, 150);
frame.setVisible(true);
}
}