Sorting data in JTable

From:

"Lukasz" <fatmouse@poczta.fm>

Newsgroups:

comp.lang.java.programmer

Date:

16 Aug 2006 05:12:40 -0700

Message-ID:

<1155730360.444948.58520@75g2000cwc.googlegroups.com>

Hello,

From
http://java.sun.com/docs/books/tutorial/uiswing/components/table.html
page, section "Sorting and Otherwise Manipulating Data" I downloaded
the TableSorter.java and implemented it into my test applet:

import java.awt.*;
import java.applet.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import java.awt.Dimension;
import java.awt.GridLayout;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;

public class Sort extends Applet implements ActionListener {

  JButton push;
  JTable tabela;
  String[] data = {"First Name", "Last Name"};
  String[][] values = new String[145][2];
  JFrame ram;
  JScrollPane scrollPane;

public void init() {

  setLayout(null);
  setBackground(new Color(204, 206, 209));

  push = new JButton("Push");
  push.addActionListener(this);
  push.setBounds(10,10, 100, 25);
  add(push);
}

public void actionPerformed(ActionEvent e) {
  if (e.getSource() == push) {
   removeAll();

   setLayout(null);
   TableSorter sorter = new TableSorter(new Model());
   tabela = new JTable(sorter);
   sorter.setTableHeader(tabela.getTableHeader());
   tabela.setPreferredScrollableViewportSize(new Dimension(450, 250));
   scrollPane = new JScrollPane(tabela);
   scrollPane.setSize(700,250);
   scrollPane.setLocation(200,100);
   add(scrollPane);
   validate();
   repaint();
  }
}

class Model extends AbstractTableModel {

  String[] data = {"First Name", "Last Name"};
  Object[][] values = {
  {"mary", "Campione"},
  {"alison", "Huml"},
  {"Kathy", "Walrath"},
  {"Sharon", "Zakhour"},
  {"Philip", "Milne"}
};

public int getColumnCount() {
  return data.length;
}

public int getRowCount() {
  return values.length;
}

public String getColumnName(int col) {
  return data[col];
}

public Object getValueAt(int row, int col) {
  return values[row][col];
}

public Class getColumnClass(int c) {
  return getValueAt(0, c).getClass();
}
}
}

HTML:
<HTML>
<HEAD>
</HEAD>
<BODY>
<APPLET CODE="Sort.class" WIDTH=1000 HEIGHT=1000></APPLET>
</BODY>
</HTML>

When every name or surname from values array starts with big letter,
sorting works fine. When it starts with small letter, this value is not
taken to sorting. I tried in LEXICAL_COMPARATOR in TableSorter.java to
put ignoreCase() and toLowerCase(), but the result was still the same.

Anyone has an idea, what to change in TableSorter.java to have a
properly working sorting?