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JAVA JTable Fixed Row

The following code add 2 fixed rows in JTable.

//Example modified from
* @version 1.0 12/03/98

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

* @version 1.0 02/25/99
public class ToolTipHeaderTableExample extends JPanel {

public ToolTipHeaderTableExample(){
setLayout(new BorderLayout());
String[] headerStr = {"default","USA" ,"CN" ,"RU" ,"unknown"};
String[] toolTipStr = {"" ,"English","China","Russian","Unknow tooltip"};

DefaultTableModel dm = new DefaultTableModel(headerStr, 4);
JTable table = new JTable(dm);

ToolTipHeader header = new ToolTipHeader(table.getColumnModel());
header.setToolTipText("Default ToolTip TEXT");

JScrollPane pane = new JScrollPane(table);
add(pane, BorderLayout.CENTER);

public static void main(String[] args) {
JFrame f= new JFrame("ToolTipHeaderTable Example");
f.getContentPane().add(new ToolTipHeaderTableExample(), BorderLayout.CENTER);
f.setSize(400, 100);
f.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {System.exit(0);}

class ToolTipHeader extends JTableHeader {
String[] toolTips;

public ToolTipHeader(TableColumnModel model) {

public String getToolTipText(MouseEvent e) {
int col = columnAtPoint(e.getPoint());
int modelCol = getTable().convertColumnIndexToModel(col);
String retStr;
try {
retStr = toolTips[modelCol];
} catch (NullPointerException ex) {
retStr = "";
} catch (ArrayIndexOutOfBoundsException ex) {
retStr = "";
if (retStr.length() < 1) {
retStr = super.getToolTipText(e);
return retStr;

public void setToolTipStrings(String[] toolTips) {
this.toolTips = toolTips;



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Best books about JAVA programming from Amazon
Professional Java, JDK 5 Edition (Paperback Simply Java Programming: An Application-Driven Tutorial Approach (Paperback) Effective Java Programming Language Guide (Paperback) Head First Java, 2nd Edition (Paperback) Java : An Introduction to Problem Solving and Programming (4th Edition)


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