JTable displays string in wrong order : my code problem or Java problem ?

Question

I have the following code that displays data in a JTable, most of the time it works fine, but I've realized when I have a cell with values like : "Snowboarding"+"[123456789]"
It would display it as : [Snowboarding[123456789
For a string like : "Chasing toddlers"+"<123456789>"
It would display it as : <Chasing toddlers<123456789
It not only moved the last bracket to the front, but also changed its direction from "]" to "[" and from ">" to "<"
Is there anything wrong with my code ? Or is this a Java problem ?
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import java.io.*;
import java.sql.*;
import java.util.*;
import java.util.List;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
public class Table_Panel extends JPanel implements ItemListener
  public static final long serialVersionUID=26362862L;
  static final int Row_Color_Style_Default=-1,Row_Color_Style_None=0,Row_Color_Style_Blue_Gray=1,Row_Color_Style_Cyan_Gray=2,Row_Color_Style_Blue=3,
                   Row_Color_Style_Gray=4,Row_Color_Style_Red_Green=5,Row_Color_Style_Green_Yellow=6,Row_Color_Style_Red_Yellow=7,
                   Max_Header_Cell_Width=0,Header_Width=1,Cell_Width=2;
  static int Row_Color_Style=Row_Color_Style_Cyan_Gray,Preffered_Width=Header_Width;
//  static int Row_Color_Style=Row_Color_Style_None,Preffered_Width=Header_Width;
//boolean        Debug=true,
  boolean        Debug=false,
//               Use_Row_Colors=true,
                 Use_Row_Colors=false;
  JFrame Table_Frame;
  TableModel My_Model;
  JScrollPane scrollPane=new JScrollPane();
  public JTable Table;
  static String columnNames[],Default_Delimiter=\",\";
  Object[][] data;
  static Dimension Screen_Size=Toolkit.getDefaultToolkit().getScreenSize();
  int Column_Width[];
  static Color Default_Selection_Color=new Color(250,135,200);
  Color Selection_Color=Default_Selection_Color;
  public Table_Panel(ResultSet RS,String Table_Name,boolean Show_External_Table,int Row_Color_Style,int Preffered_Width,boolean In_Original_Order)
    String Value,Table_Column_Names[]=null;
    Object[][] Table_Data=null;
    int Row_Count,Index=0;
    try
      if (RS==null) return;
      else
        RS.last();
        Row_Count=RS.getRow();
        RS.beforeFirst();
      ResultSetMetaData rsmd=RS.getMetaData();
      int Column_Count=rsmd.getColumnCount();
      Table_Column_Names=new String[Column_Count];
      Table_Data=new Object[Row_Count][Column_Count];
      for (int i=1;i<=Column_Count;i++) Table_Column_Names[i-1]=rsmd.getColumnLabel(i);            // Get column names
//Out("Row_Count="+Row_Count+"  Column_Count="+Column_Count);
      while (RS.next())                                                                            // Get all rows
        for (int i=1;i<=Column_Count;i++)
          Value=RS.getString(i);
          Table_Data[Index][i-1]=(Value==null)?"null":Value;
        Index++;
//      if (Test_Ct++>300) break;
    catch (Exception e) { e.printStackTrace(); }
    scrollPane=new Table_Panel(Table_Name,Table_Column_Names,Table_Data,Table_Data.length,false,Show_External_Table,false,Row_Color_Style,Preffered_Width,Selection_Color,In_Original_Order).scrollPane;
  public Table_Panel(String[] Table_Column_Names,Object[][] Table_Data,Color Selection_Color,boolean In_Original_Order)
    this("",Table_Column_Names,Table_Data,Table_Data.length,false,false,false,Row_Color_Style,Preffered_Width,Selection_Color,In_Original_Order);
  public Table_Panel(String Table_Name,String[] Table_Column_Names,Object[][] Table_Data,boolean Show_External_Table,Color Selection_Color,boolean In_Original_Order)
    this(Table_Name,Table_Column_Names,Table_Data,Table_Data.length,false,Show_External_Table,false,Row_Color_Style,Preffered_Width,Selection_Color,In_Original_Order);
  public Table_Panel(String Table_Name,String[] Table_Column_Names,Object[][] Table_Data,int Row_Count,boolean Is_Child,boolean Show_External_Table,boolean Manage_Attachment,int Row_Color_Style,int Preffered_Width,Color Selection_Color,boolean In_Original_Order)
    columnNames=Table_Column_Names;
    if (In_Original_Order) data=Table_Data;
    else
      data=new Object[Table_Data.length][columnNames.length];
      for (int row=0;row<Table_Data.length;row++)
        data[row]=new Object[columnNames.length];
        for (int Column=0;Column<Table_Data[row].length;Column++) data[row][Column]=Table_Data[Table_Data.length-1-row][Column];
    Column_Width=new int[columnNames.length];
    this.Row_Color_Style=Row_Color_Style;
    Use_Row_Colors=(Row_Color_Style!=Row_Color_Style_None);
    this.Preffered_Width=Preffered_Width;
    if (Selection_Color!=null) this.Selection_Color=Selection_Color;
//    Out("this.Selection_Color="+this.Selection_Color);
//    TableModel My_Model=new DefaultTableModel(Table_Data,columnNames)
    TableModel My_Model=new DefaultTableModel(data,columnNames)
      public int getColumnCount() { return columnNames.length; }
      public int getRowCount() { return data.length; }
      public String getColumnName(int col) { return columnNames[col]; }
      public Object getValueAt(int row,int col)
//      Out(row+","+col+"["+data[row][col]+"]   data.length="+data.length+"  data[0].length="+data[0].length);
        return (data[row][col]==null)?"":((data[row][col] instanceof Boolean)?data[row][col]:data[row][col].toString()); // Non-boolean values will have bgcolor
      public Class getColumnClass(int column)
        Class returnValue;
        if ((column>=0) && (column<getColumnCount())) returnValue=getValueAt(0,column).getClass();
        else returnValue=Object.class;
        return returnValue;
    // JTable uses this method to determine the default renderer/editor for each cell. If we didn't implement this method, then the last column would contain text ("true"/"false"), rather than a check box.
//    public Class getColumnClass(int c) { return getValueAt(0,c).getClass(); }
      // Don't need to implement this method unless your table's editable.
      public boolean isCellEditable(int row,int col)
        //Note that the data/cell address is constant, no matter where the cell appears onscreen.
        if (col<0) return false;
        else return true;
      // Don't need to implement this method unless your table's data can change.
      public void setValueAt(Object value,int row,int col)
        String Execution_Dir=getClass().getProtectionDomain().getCodeSource().getLocation().toString();
        if (Debug) System.out.println("Execution_Dir="+Execution_Dir+"\nLast_Value="+Table_Grid_Cell_Renderer.Last_Value+"  Setting value at [ "+row+","+col+" ] to "+value+" (an instance of "+value.getClass()+")");
        if (Execution_Dir.toLowerCase().indexOf("c:/")!=-1 || value.getClass()==Boolean.class || !Use_Row_Colors) data[row][col]=value;
//     else data[row][col]=(Table_Grid_CellRenderer.Last_Value==null)?value:value.toString().substring(Table_Grid_CellRenderer.Last_Value.toString().length());
        fireTableCellUpdated(row,col);
        if (Debug)
          System.out.println("New value of data :");
          printDebugData();
      private void printDebugData()
        int numRows=getRowCount();
        int numCols=getColumnCount();
        for (int i=0;i<numRows;i++)
          System.out.print("    row "+i+":");
          for (int j=0;j<numCols;j++) System.out.print("  "+data[i][j]);
          System.out.println();
        System.out.println("--------------------------------------------------------------------------");
    TableSorter sorter=new TableSorter(My_Model);
    Table=new JTable(sorter)
//    Table=new JTable(My_Model)
      public static final long serialVersionUID=26362862L;
      public String getToolTipText(MouseEvent e)           // Implement table cell tool tips.
        Object Cell_Tip;
        String tip=null;
        java.awt.Point p=e.getPoint();
        int rowIndex=rowAtPoint(p);
        int colIndex=columnAtPoint(p);
        int realColumnIndex=convertColumnIndexToModel(colIndex);
        Cell_Tip=getValueAt(rowIndex,colIndex);
//        if (realColumnIndex == 2)                         //Sport column
          tip=Cell_Tip.toString();
        else if (realColumnIndex == 4)                      //Veggie column
          TableModel model=getModel();
          String firstName=(String)model.getValueAt(rowIndex,0);
          String lastName=(String)model.getValueAt(rowIndex,1);
          Boolean veggie=(Boolean)model.getValueAt(rowIndex,4);
          if (Boolean.TRUE.equals(veggie)) tip=firstName+" "+lastName+" is a vegetarian";
          else tip=firstName+" "+lastName+" is not a vegetarian";
        else
          // You can omit this part if you know you don't have any renderers that supply their own tool tips.
          tip=super.getToolTipText(e);
        return tip;
//    RowSorter<TableModel> sorter=new TableRowSorter<TableModel>(My_Model);
//    Table.setRowSorter(sorter);
    Table.setSelectionBackground(this.Selection_Color);
    int Table_Height=Table.getRowHeight()*Row_Count;
    // sorter.addMouseListenerToHeaderInTable(Table);      // ADDED THIS
    sorter.setTableHeader(Table.getTableHeader());
    if (Table_Column_Names.length>20) Table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
    if (Manage_Attachment) Table.setPreferredScrollableViewportSize(new Dimension(500,(Table_Height>850)?850:Table_Height));
    else Table.setPreferredScrollableViewportSize(new Dimension(1000,(Table_Height>850)?850:Table_Height));
    if (Use_Row_Colors) Table.setDefaultRenderer(Object.class,new Table_Grid_Cell_Renderer());
    //Create the scroll pane and add the table to it.
    scrollPane=new JScrollPane(Table);
    //Set up column sizes.
    initColumnSizes(Table,My_Model);
    //Add the scroll pane to this window.
    if (Show_External_Table)
      Table_Frame=new JFrame(Table_Name);
      Table_Frame.getContentPane().add(scrollPane);
      Table_Frame.addWindowListener(new WindowAdapter()
        public void windowActivated(WindowEvent e) { }
        public void windowClosed(WindowEvent e) { }
        public void windowClosing(WindowEvent e)  { System.exit(0); }
        public void windowDeactivated(WindowEvent e)  { }
        public void windowDeiconified(WindowEvent e)  { scrollPane.repaint(); }
        public void windowGainedFocus(WindowEvent e)  { scrollPane.repaint(); }
        public void windowIconified(WindowEvent e)  { }
        public void windowLostFocus(WindowEvent e)  { }
        public void windowOpening(WindowEvent e) { scrollPane.repaint(); }
        public void windowOpened(WindowEvent e)  { }
        public void windowResized(WindowEvent e) { scrollPane.repaint(); } 
        public void windowStateChanged(WindowEvent e) { scrollPane.repaint(); }
      Table_Frame.pack();
      Table_Frame.setBounds((Screen_Size.width-Table_Frame.getWidth())/2,(Screen_Size.height-Table_Frame.getHeight())/2,Table_Frame.getWidth(),Table_Frame.getHeight());
      Table_Frame.setVisible(true);
      if (Is_Child) Table_Frame.addComponentListener(new ComponentAdapter() { public void componentClosing(ComponentEvent e) { System.exit(0); } });
    else add(scrollPane);
  public Table_Panel(String File_Name) { this(File_Name,false,Row_Color_Style_Cyan_Gray,Preffered_Width,null,Default_Selection_Color,true); }
  public Table_Panel(String File_Name,int Row_Color_Style,boolean In_Original_Order) { this(File_Name,false,Row_Color_Style,Preffered_Width,null,Default_Selection_Color,In_Original_Order); }
  public Table_Panel(String File_Name,String Delimiter,boolean In_Original_Order) { this(File_Name,false,Row_Color_Style_Cyan_Gray,Preffered_Width,Delimiter,Default_Selection_Color,In_Original_Order); }
  public Table_Panel(String File_Name,int Preffered_Width,String Delimiter,boolean In_Original_Order) { this(File_Name,false,Row_Color_Style,Preffered_Width,Delimiter,Default_Selection_Color,In_Original_Order); }
  public Table_Panel(String File_Name,int Row_Color_Style,int Preffered_Width,String Delimiter,boolean In_Original_Order) { this(File_Name,false,Row_Color_Style,Preffered_Width,Delimiter,Default_Selection_Color,In_Original_Order); }
  public Table_Panel(String File_Name,boolean Show_External_Table,boolean In_Original_Order) { this(File_Name,Show_External_Table,Row_Color_Style,Preffered_Width,null,Default_Selection_Color,In_Original_Order); }
  public Table_Panel(String File_Name,boolean Show_External_Table,String Delimiter,boolean In_Original_Order) { this(File_Name,Show_External_Table,Row_Color_Style,Preffered_Width,Delimiter,Default_Selection_Color,In_Original_Order); }
  public Table_Panel(String File_Name,boolean Show_External_Table,int Row_Color_Style,int Preffered_Width,String Delimiter,Color Selection_Color,boolean In_Original_Order)
    String Table_Column_Names[],Column_Name_Line="";
    int Row_Count=0,Index=0;
    boolean Is_Child=false,Manage_Attachment=false;
    StringTokenizer ST;
    if (Delimiter==null) Delimiter=Default_Delimiter;
    if (new File(File_Name).exists())
      try
        String Line,Str=Tool_Lib.Read_File(File_Name).toString();
        ST=new StringTokenizer(Str,"\n");
        Line=ST.nextToken();
        Row_Count=ST.countTokens();
        Object[][] Table_Data=new Object[Row_Count][];
        if (Delimiter.equals(" ")) Line=Line.replaceAll(" {2,}"," ").trim();     // Replace multiple spaces with the delimiter space
        Table_Column_Names=Line.split(Delimiter);
        columnNames=Table_Column_Names;
        for (int i=0;i<Table_Column_Names.length;i++) Column_Name_Line+=Table_Column_Names[i]+"  ";
//Out("Column_Name_Line [ "+Table_Column_Names.length+" ]="+Column_Name_Line);
        while (ST.hasMoreTokens())
          Line=ST.nextToken();
//Out(Line);
          if (Delimiter.equals(" ")) Line=Line.replaceAll(" {2,}"," ").trim();   // Replace multiple spaces with the delimiter space
          if (Line.indexOf(Delimiter)!=-1) Table_Data[Index]=Line.split(Delimiter);
          else
            Table_Data[Index]=new Object[Table_Column_Names.length];
            Table_Data[Index][0]=Line;
            for (int i=1;i<Table_Column_Names.length;i++) Table_Data[Index]="";
Index++;
Line="";
for (int i=0;i<Table_Data.length;i++)
Line+="[ "+Table_Data[i].length+" ] ";
for (int j=0;j<Table_Data[i].length;j++) Line+=Table_Data[i][j]+" ";
Line+="\n";
Out(Line);
Table_Panel A_Table_Panel=new Table_Panel(File_Name,Table_Column_Names,Table_Data,Row_Count,Is_Child,Show_External_Table,Manage_Attachment,Row_Color_Style,Preffered_Width,Selection_Color,In_Original_Order);
Table=A_Table_Panel.Table;
scrollPane=A_Table_Panel.scrollPane;
Column_Width=A_Table_Panel.Column_Width;
data=A_Table_Panel.data;
catch (Exception e) { e.printStackTrace(); }
public void setPreferredSize(Dimension A_Dimension) { scrollPane.setPreferredSize(A_Dimension); }
// This method picks good column sizes. If all column heads are wider than the column's cells' contents, then you can just use column.sizeWidthToFit().
void initColumnSizes(JTable table,TableModel model)
TableColumn column=null;
Component comp=null;
int headerWidth=0,cellWidth=0;
Object[] longValues=(data.length>0)?data[0]:null;
TableCellRenderer headerRenderer=table.getTableHeader().getDefaultRenderer();
if (data.length<1) return;
for (int i=0;i<model.getColumnCount();i++)
column=table.getColumnModel().getColumn(i);
comp=headerRenderer.getTableCellRendererComponent(null,column.getHeaderValue(),false,false,0,0);
headerWidth=comp.getPreferredSize().width;
comp=table.getDefaultRenderer(model.getColumnClass(i)).
getTableCellRendererComponent(table,longValues[i],false,false,0,i);
cellWidth=comp.getPreferredSize().width;
switch (Preffered_Width)
case Max_Header_Cell_Width : column.setPreferredWidth(Math.max(headerWidth,cellWidth));break;
case Header_Width : column.setPreferredWidth(headerWidth);break;
case Cell_Width : column.setPreferredWidth(cellWidth);break;
Column_Width[i]=column.getPreferredWidth();
if (Debug) Out("Initializing width of column "+i+". "+"headerWidth="+headerWidth+"; cellWidth="+cellWidth+" Column_Width["+i+"]="+Column_Width[i]);
// Detects a state change in any of the Lists. Resets the variable corresponding to the selected item in a particular List. Invokes changeFont with the currently selected fontname, style and size attributes.
public void itemStateChanged(ItemEvent e)
Out(e.toString());
if (e.getStateChange() != ItemEvent.SELECTED) return;
Object list=e.getSource();
public static void Out(String message) { System.out.println(message); }
// Create the GUI and show it. For thread safety, this method should be invoked from the event-dispatching thread.
static void Create_And_Show_GUI()
boolean Demo_External_Table=true;
// boolean Demo_External_Table=false;
final Table_Panel demo;
String[] columnNames={"First Names","Last Names","Sport","Num of Years","Vegetarian"};
Object[][] data={{"Mary","Campione","Snowboarding"+"[123456789]",new Integer(5),new Boolean(false)},
{"Alison","Huml","Rowing"+":123456789]",new Integer(3),new Boolean(true)},
{"Frank","Ni","Running"+":123456789", new Integer(12), new Boolean(false)},
{"Kathy","Walrath","Chasing toddlers"+"<123456789>", new Integer(2), new Boolean(false)},
{"Mark", "Andrews","Speed reading",new Integer(20),new Boolean(true)},
{"Angela","Lih","Teaching high school",new Integer(36),new Boolean(false)} };
// Row_Color_Style=Row_Color_Style_Default;
// Row_Color_Style=Row_Color_Style_None;
// Row_Color_Style=Row_Color_Style_Blue_Gray;
Row_Color_Style=Row_Color_Style_Cyan_Gray;
// Row_Color_Style=Row_Color_Style_Blue;
// Row_Color_Style=Row_Color_Style_Gray;
// Row_Color_Style=Row_Color_Style_Red_Green;
// Row_Color_Style=Row_Color_Style_Green_Yellow;
// Row_Color_Style=Row_Color_Style_Red_Yellow;
Preffered_Width=Max_Header_Cell_Width;
if (Demo_External_Table) demo=new Table_Panel("External Table Demo",columnNames,data,data.length,false,Demo_External_Table,false,Row_Color_Style,Max_Header_Cell_Width,Default_Selection_Color,true);
else
JFrame Table_Frame=new JFrame("Internal Table Demo");
// demo=new Table_Panel(Nm_Lib.Dir_A_Test+"ELX.csv",false,Row_Color_Style,Preffered_Width,null);
// demo=new Table_Panel(Nm_Lib.Dir_Stock_Data+"ABV_Data.txt",false,Row_Color_Style,Preffered_Width," ");
demo=new Table_Panel("C:/Dir_Stock_Data/EOP.txt",",",false);
// demo=new Table_Panel(Nm_Lib.Dir_Stock_Data+"ABV_Data.txt"," ",false);
Table_Frame.getContentPane().add(demo.scrollPane);
Table_Frame.addWindowListener(new WindowAdapter()
public void windowActivated(WindowEvent e) { }
public void windowClosed(WindowEvent e) { }
public void windowClosing(WindowEvent e) { System.exit(0); }
public void windowDeactivated(WindowEvent e) { }
public void windowDeiconified(WindowEvent e) { demo.repaint(); }
public void windowGainedFocus(WindowEvent e) { demo.repaint(); }
public void windowIconified(WindowEvent e) { }
public void windowLostFocus(WindowEvent e) { }
public void windowOpening(WindowEvent e) { demo.repaint(); }
public void windowOpened(WindowEvent e) { }
public void windowResized(WindowEvent e) { demo.repaint(); }
public void windowStateChanged(WindowEvent e) { demo.repaint(); }
Table_Frame.pack();
Table_Frame.setBounds((Screen_Size.width-Table_Frame.getWidth())/2,(Screen_Size.height-Table_Frame.getHeight())/2,Table_Frame.getWidth(),Table_Frame.getHeight());
Table_Frame.setVisible(true);
public static void main(String[] args)
// Schedule a job for the event-dispatching thread : creating and showing this application's GUI.
SwingUtilities.invokeLater(new Runnable() { public void run() { Create_And_Show_GUI(); } });
* TableSorter is a decorator for TableModels; adding sorting functionality to a supplied TableModel. TableSorter does not store
* or copy the data in its TableModel; instead it maintains a map from the row indexes of the view to the row indexes of the
* model. As requests are made of the sorter (like getValueAt(row, col)) they are passed to the underlying model after the row numbers
* have been translated via the internal mapping array. This way, the TableSorter appears to hold another copy of the table
* with the rows in a different order.
* <p/>
* TableSorter registers itself as a listener to the underlying model, just as the JTable itself would. Events recieved from the model
* are examined, sometimes manipulated (typically widened), and then passed on to the TableSorter's listeners (typically the JTable).
* If a change to the model has invalidated the order of TableSorter's rows, a note of this is made and the sorter will resort the
* rows the next time a value is requested.
* <p/>
* When the tableHeader property is set, either by using the setTableHeader() method or the two argument constructor, the table
* header may be used as a complete UI for TableSorter. The default renderer of the tableHeader is decorated with a renderer
* that indicates the sorting status of each column. In addition, a mouse listener is installed with the following behavior:
* <ul>
* <li>
* Mouse-click: Clears the sorting status of all other columns and advances the sorting status of that column through three
* values: {NOT_SORTED, ASCENDING, DESCENDING} (then back to NOT_SORTED again).
* <li>
* SHIFT-mouse-click: Clears the sorting status of all other columns and cycles the sorting status of the column through the same
* three values, in the opposite order: {NOT_SORTED, DESCENDING, ASCENDING}.
* <li>
* CONTROL-mouse-click and CONTROL-SHIFT-mouse-click: as above except that the changes to the column do not cancel the statuses of columns
* that are already sorting - giving a way to initiate a compound sort.
* </ul>
* <p/>
* This is a long overdue rewrite of a class of the same name that first appeared in the swing table demos in 1997.
* @author Philip Milne
* @author Brendon McLean
* @author Dan van Enckevort
* @author Parwinder Sekhon
* @version 2.0 02/27/04
class TableSorter extends AbstractTableModel
public static final long serialVersionUID=26362862L;
protected TableModel tableModel;
public static final int DESCENDING = -1;
public static final int NOT_SORTED = 0;
public static final int ASCENDING = 1;
private static Directive EMPTY_DIRECTIVE = new Directive(-1, NOT_SORTED);
public static final Comparator COMPARABLE_COMAPRATOR = new Comparator() { public int compare(Object o1, Object o2) { return ((Comparable) o1).compareTo(o2); } };
public static final Comparator LEXICAL_COMPARATOR = new Comparator() { public int compare(Object o1, Object o2) { return o1.toString().compareTo(o2.toString()); } };
private Row[] viewToModel;
private int[] modelToView;
private JTableHeader tableHeader;
private MouseListener mouseListener;
private TableModelListener tableModelListener;
private Map<Class,Comparator> columnComparators = new HashMap<Class,Comparator>();
private List<Directive> sortingColumns = new ArrayList<Directive>();
public TableSorter()
this.mouseListener = new MouseHandler();
this.tableModelListener = new TableModelHandler();
public TableSorter(TableModel tableModel)
this();
setTableModel(tableModel);
public TableSorter(TableModel tableModel, JTableHeader tableHeader)
this();
setTableHeader(tableHeader);
setTableModel(tableModel);
private void clearSortingState()
viewToModel = null;
modelToView = null;
public TableModel getTableModel() { return tableModel; }
public void setTableModel(TableModel tableModel)
if (this.tableModel != null) { this.tableModel.removeTableModelListener(tableModelListener); }
this.tableModel = tableModel;
if (this.tableModel != null) { this.tableModel.addTableModelListener(tableModelListener); }
clearSortingState();
fireTableStructureChanged();
public JTableHeader getTableHeader() { return tableHeader; }
public void setTableHeader(JTableHeader tableHeader)
if (this.tableHeader != null)
this.tableHeader.removeMouseListener(mouseListener);
TableCellRenderer defaultRenderer = this.tableHeader.getDefaultRenderer();
if (defaultRenderer instanceof SortableHeaderRenderer) this.tableHeader.setDefaultRenderer(((SortableHeaderRenderer) defaultRenderer).tableCellRenderer);
this.tableHeader = tableHeader;
if (this.tableHeader != null)
this.tableHeader.addMouseListener(mouseListener);
this.tableHeader.setDefaultRenderer(
new SortableHeaderRenderer(this.tableHeader.getDefaultRenderer()));
public boolean isSorting() { return sortingColumns.size() != 0; }
private Directive getDirective(int column)
for (int i = 0; i < sortingColumns.size(); i++)
Directive directive = (Directive)sortingColumns.get(i);
if (directive.column == column) { return directive; }
return EMPTY_DIRECTIVE;
public int getSortingStatus(int column) { return getDirective(column).direction; }
private void sortingStatusChanged()
clearSortingState();
fireTableDataChanged();
if (tableHeader != null) { tableHeader.repaint(); }
public void setSortingStatus(int column, int status)
Directive directive = getDirective(column);
if (directive != EMPTY_DIRECTIVE) { sortingColumns.remove(directive); }
if (status != NOT_SORTED) { sortingColumns.add(new Directive(column, status)); }
sortingStatusChanged();
protected Icon getHeaderRendererIcon(int column, int size)
Directive directive = getDirective(column);
if (directive == EMPTY_DIRECTIVE) { return null; }
return new Arrow(directive.direction == DESCENDING, size, sortingColumns.indexOf(directive));
private void cancelSorting()
sortingColumns.clear();
sortingStatusChanged();
public void setColumnComparator(Class type, Comparator comparator)
if (comparator == null) { columnComparators.remove(type); }
else { columnComparators.put(type, comparator); }
protected Comparator getComparator(int column)
Class columnType = tableModel.getColumnClass(column);
Comparator comparator = (Comparator) columnComparators.get(columnType);
if (comparator != null) { return comparator; }
if (Comparable.class.isAssignableFrom(columnType)) { return COMPARABLE_COMAPRATOR; }
return LEXICAL_COMPARATOR;
private Row[] getViewToModel()
if (viewToModel == null)
int tableModelRowCount = tableModel.getRowCount();
viewToModel = new Row[tableModelRowCount];
for (int row = 0; row < tableModelRowCount; row++) { viewToModel[row] = new Row(row); }
if (isSorting()) { Arrays.sort(viewToModel); }
return viewToModel;
public int modelIndex(int viewIndex) { return getViewToModel()[viewIndex].modelIndex; }
private int[] getModelToView()
if (modelToView == null)
int n = getViewToModel().length;
modelToView = new int[n];
for (int i = 0; i < n; i++) { modelToView[modelIndex(i)] = i; }
return modelToView;
// TableModel interface methods
public int getRowCount() { return (tableModel == null) ? 0 : tableModel.getRowCount(); }
public int getColumnCount() { return (tableModel == null) ? 0 : tableModel.getColumnCount(); }
public String getColumnName(int column) { return tableModel.getColumnName(column); }
public Class getColumnClass(int column) { return tableModel.getColumnClass(column); }
public boolean isCellEditable(int row, int column) { return tableModel.isCellEditable(modelIndex(row), column); }
public Object getValueAt(int row, int column) { return tableModel.getValueAt(modelIndex(row), column); }
public void setValueAt(Object aValue, int row, int column) { tableModel.setValueAt(aValue, modelIndex(row), column); }
// Helper classes
private class Row implements Comparable
private int modelIndex;
public Row(int index) { this.modelIndex = index; }
public int compareTo(Object o)
int row1 = modelIndex;
int row2 = ((Row) o).modelIndex;
for (Iterator it = sortingColumns.iterator(); it.hasNext();)
Directive directive = (Directive) it.next();
int column = directive.column;
Object o1 = tableModel.getValueAt(row1, column);
Object o2 = tableModel.getValueAt(row2, column);
int comparison = 0;
// Define null less than everything, except null.

Answer 1

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import java.io.*;
import java.sql.*;
import java.util.*;
import java.util.List;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
public class Table_Panel extends JPanel implements ItemListener
  public static final long serialVersionUID=26362862L;
  static final int Row_Color_Style_Default=-1,Row_Color_Style_None=0,Row_Color_Style_Blue_Gray=1,Row_Color_Style_Cyan_Gray=2,Row_Color_Style_Blue=3,
                   Row_Color_Style_Gray=4,Row_Color_Style_Red_Green=5,Row_Color_Style_Green_Yellow=6,Row_Color_Style_Red_Yellow=7,
                   Max_Header_Cell_Width=0,Header_Width=1,Cell_Width=2;
  static int Row_Color_Style=Row_Color_Style_Cyan_Gray,Preffered_Width=Header_Width;
//  static int Row_Color_Style=Row_Color_Style_None,Preffered_Width=Header_Width;
//boolean        Debug=true,
  boolean        Debug=false,
//               Use_Row_Colors=true,
                 Use_Row_Colors=false;
  JFrame Table_Frame;
  TableModel My_Model;
  JScrollPane scrollPane=new JScrollPane();
  public JTable Table;
  static String columnNames[],Default_Delimiter=",";
  Object[][] data;
  static Dimension Screen_Size=Toolkit.getDefaultToolkit().getScreenSize();
  int Column_Width[];
  static Color Default_Selection_Color=new Color(250,135,200);
  Color Selection_Color=Default_Selection_Color;
  public Table_Panel(ResultSet RS,String Table_Name,boolean Show_External_Table,int Row_Color_Style,int Preffered_Width,boolean In_Original_Order)
    String Value,Table_Column_Names[]=null;
    Object[][] Table_Data=null;
    int Row_Count,Index=0;
    try
      if (RS==null) return;
      else
        RS.last();
        Row_Count=RS.getRow();
        RS.beforeFirst();
      ResultSetMetaData rsmd=RS.getMetaData();
      int Column_Count=rsmd.getColumnCount();
      Table_Column_Names=new String[Column_Count];
      Table_Data=new Object[Row_Count][Column_Count];
      for (int i=1;i<=Column_Count;i++) Table_Column_Names[i-1]=rsmd.getColumnLabel(i);            // Get column names
//Out("Row_Count="+Row_Count+"  Column_Count="+Column_Count);
      while (RS.next())                                                                            // Get all rows
        for (int i=1;i<=Column_Count;i++)
          Value=RS.getString(i);
          Table_Data[Index][i-1]=(Value==null)?"null":Value;
        Index++;
//      if (Test_Ct++>300) break;
    catch (Exception e) { e.printStackTrace(); }
    scrollPane=new Table_Panel(Table_Name,Table_Column_Names,Table_Data,Table_Data.length,false,Show_External_Table,false,Row_Color_Style,Preffered_Width,Selection_Color,In_Original_Order).scrollPane;
  public Table_Panel(String[] Table_Column_Names,Object[][] Table_Data,Color Selection_Color,boolean In_Original_Order)
    this("",Table_Column_Names,Table_Data,Table_Data.length,false,false,false,Row_Color_Style,Preffered_Width,Selection_Color,In_Original_Order);
  public Table_Panel(String Table_Name,String[] Table_Column_Names,Object[][] Table_Data,boolean Show_External_Table,Color Selection_Color,boolean In_Original_Order)
    this(Table_Name,Table_Column_Names,Table_Data,Table_Data.length,false,Show_External_Table,false,Row_Color_Style,Preffered_Width,Selection_Color,In_Original_Order);
  public Table_Panel(String Table_Name,String[] Table_Column_Names,Object[][] Table_Data,int Row_Count,boolean Is_Child,boolean Show_External_Table,boolean Manage_Attachment,int Row_Color_Style,int Preffered_Width,Color Selection_Color,boolean In_Original_Order)
    columnNames=Table_Column_Names;
    if (In_Original_Order) data=Table_Data;
    else
      data=new Object[Table_Data.length][columnNames.length];
      for (int row=0;row<Table_Data.length;row++)
        data[row]=new Object[columnNames.length];
        for (int Column=0;Column<Table_Data[row].length;Column++) data[row][Column]=Table_Data[Table_Data.length-1-row][Column];
    Column_Width=new int[columnNames.length];
    this.Row_Color_Style=Row_Color_Style;
    Use_Row_Colors=(Row_Color_Style!=Row_Color_Style_None);
    this.Preffered_Width=Preffered_Width;
    if (Selection_Color!=null) this.Selection_Color=Selection_Color;
//    Out("this.Selection_Color="+this.Selection_Color);
//    TableModel My_Model=new DefaultTableModel(Table_Data,columnNames)
    TableModel My_Model=new DefaultTableModel(data,columnNames)
      public int getColumnCount() { return columnNames.length; }
      public int getRowCount() { return data.length; }
      public String getColumnName(int col) { return columnNames[col]; }
      public Object getValueAt(int row,int col)
//      Out(row+","+col+"["+data[row][col]+"]   data.length="+data.length+"  data[0].length="+data[0].length);
        return (data[row][col]==null)?"":((data[row][col] instanceof Boolean)?data[row][col]:data[row][col].toString()); // Non-boolean values will have bgcolor
      public Class getColumnClass(int column)
        Class returnValue;
        if ((column>=0) && (column<getColumnCount())) returnValue=getValueAt(0,column).getClass();
        else returnValue=Object.class;
        return returnValue;
    // JTable uses this method to determine the default renderer/editor for each cell. If we didn't implement this method, then the last column would contain text ("true"/"false"), rather than a check box.
//    public Class getColumnClass(int c) { return getValueAt(0,c).getClass(); }
      // Don't need to implement this method unless your table's editable.
      public boolean isCellEditable(int row,int col)
        //Note that the data/cell address is constant, no matter where the cell appears onscreen.
        if (col<0) return false;
        else return true;
      // Don't need to implement this method unless your table's data can change.
      public void setValueAt(Object value,int row,int col)
        String Execution_Dir=getClass().getProtectionDomain().getCodeSource().getLocation().toString();
        if (Debug) System.out.println("Execution_Dir="+Execution_Dir+"\nLast_Value="+Table_Grid_Cell_Renderer.Last_Value+"  Setting value at [ "+row+","+col+" ] to "+value+" (an instance of "+value.getClass()+")");
        if (Execution_Dir.toLowerCase().indexOf("c:/")!=-1 || value.getClass()==Boolean.class || !Use_Row_Colors) data[row][col]=value;
//     else data[row][col]=(Table_Grid_CellRenderer.Last_Value==null)?value:value.toString().substring(Table_Grid_CellRenderer.Last_Value.toString().length());
        fireTableCellUpdated(row,col);
        if (Debug)
          System.out.println("New value of data :");
          printDebugData();
      private void printDebugData()
        int numRows=getRowCount();
        int numCols=getColumnCount();
        for (int i=0;i<numRows;i++)
          System.out.print("    row "+i+":");
          for (int j=0;j<numCols;j++) System.out.print("  "+data[i][j]);
          System.out.println();
        System.out.println("--------------------------------------------------------------------------");
    TableSorter sorter=new TableSorter(My_Model);
    Table=new JTable(sorter)
//    Table=new JTable(My_Model)
      public static final long serialVersionUID=26362862L;
      public String getToolTipText(MouseEvent e)           // Implement table cell tool tips.
        Object Cell_Tip;
        String tip=null;
        java.awt.Point p=e.getPoint();
        int rowIndex=rowAtPoint(p);
        int colIndex=columnAtPoint(p);
        int realColumnIndex=convertColumnIndexToModel(colIndex);
        Cell_Tip=getValueAt(rowIndex,colIndex);
//        if (realColumnIndex == 2)                         //Sport column
          tip=Cell_Tip.toString();
        else if (realColumnIndex == 4)                      //Veggie column
          TableModel model=getModel();
          String firstName=(String)model.getValueAt(rowIndex,0);
          String lastName=(String)model.getValueAt(rowIndex,1);
          Boolean veggie=(Boolean)model.getValueAt(rowIndex,4);
          if (Boolean.TRUE.equals(veggie)) tip=firstName+" "+lastName+" is a vegetarian";
          else tip=firstName+" "+lastName+" is not a vegetarian";
        else
          // You can omit this part if you know you don't have any renderers that supply their own tool tips.
          tip=super.getToolTipText(e);
        return tip;
//    RowSorter<TableModel> sorter=new TableRowSorter<TableModel>(My_Model);
//    Table.setRowSorter(sorter);
    Table.setSelectionBackground(this.Selection_Color);
    int Table_Height=Table.getRowHeight()*Row_Count;
    // sorter.addMouseListenerToHeaderInTable(Table);      // ADDED THIS
    sorter.setTableHeader(Table.getTableHeader());
    if (Table_Column_Names.length>20) Table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
    if (Manage_Attachment) Table.setPreferredScrollableViewportSize(new Dimension(500,(Table_Height>850)?850:Table_Height));
    else Table.setPreferredScrollableViewportSize(new Dimension(1000,(Table_Height>850)?850:Table_Height));
    if (Use_Row_Colors) Table.setDefaultRenderer(Object.class,new Table_Grid_Cell_Renderer());
    //Create the scroll pane and add the table to it.
    scrollPane=new JScrollPane(Table);
    //Set up column sizes.
    initColumnSizes(Table,My_Model);
    //Add the scroll pane to this window.
    if (Show_External_Table)
      Table_Frame=new JFrame(Table_Name);
      Table_Frame.getContentPane().add(scrollPane);
      Table_Frame.addWindowListener(new WindowAdapter()
        public void windowActivated(WindowEvent e) { }
        public void windowClosed(WindowEvent e) { }
        public void windowClosing(WindowEvent e)  { System.exit(0); }
        public void windowDeactivated(WindowEvent e)  { }
        public void windowDeiconified(WindowEvent e)  { scrollPane.repaint(); }
        public void windowGainedFocus(WindowEvent e)  { scrollPane.repaint(); }
        public void windowIconified(WindowEvent e)  { }
        public void windowLostFocus(WindowEvent e)  { }
        public void windowOpening(WindowEvent e) { scrollPane.repaint(); }
        public void windowOpened(WindowEvent e)  { }
        public void windowResized(WindowEvent e) { scrollPane.repaint(); } 
        public void windowStateChanged(WindowEvent e) { scrollPane.repaint(); }
      Table_Frame.pack();
      Table_Frame.setBounds((Screen_Size.width-Table_Frame.getWidth())/2,(Screen_Size.height-Table_Frame.getHeight())/2,Table_Frame.getWidth(),Table_Frame.getHeight());
      Table_Frame.setVisible(true);
      if (Is_Child) Table_Frame.addComponentListener(new ComponentAdapter() { public void componentClosing(ComponentEvent e) { System.exit(0); } });
    else add(scrollPane);
  public Table_Panel(String File_Name) { this(File_Name,false,Row_Color_Style_Cyan_Gray,Preffered_Width,null,Default_Selection_Color,true); }
  public Table_Panel(String File_Name,int Row_Color_Style,boolean In_Original_Order) { this(File_Name,false,Row_Color_Style,Preffered_Width,null,Default_Selection_Color,In_Original_Order); }
  public Table_Panel(String File_Name,String Delimiter,boolean In_Original_Order) { this(File_Name,false,Row_Color_Style_Cyan_Gray,Preffered_Width,Delimiter,Default_Selection_Color,In_Original_Order); }
  public Table_Panel(String File_Name,int Preffered_Width,String Delimiter,boolean In_Original_Order) { this(File_Name,false,Row_Color_Style,Preffered_Width,Delimiter,Default_Selection_Color,In_Original_Order); }
  public Table_Panel(String File_Name,int Row_Color_Style,int Preffered_Width,String Delimiter,boolean In_Original_Order) { this(File_Name,false,Row_Color_Style,Preffered_Width,Delimiter,Default_Selection_Color,In_Original_Order); }
  public Table_Panel(String File_Name,boolean Show_External_Table,boolean In_Original_Order) { this(File_Name,Show_External_Table,Row_Color_Style,Preffered_Width,null,Default_Selection_Color,In_Original_Order); }
  public Table_Panel(String File_Name,boolean Show_External_Table,String Delimiter,boolean In_Original_Order) { this(File_Name,Show_External_Table,Row_Color_Style,Preffered_Width,Delimiter,Default_Selection_Color,In_Original_Order); }
  public Table_Panel(String File_Name,boolean Show_External_Table,int Row_Color_Style,int Preffered_Width,String Delimiter,Color Selection_Color,boolean In_Original_Order)
    String Table_Column_Names[],Column_Name_Line="";
    int Row_Count=0,Index=0;
    boolean Is_Child=false,Manage_Attachment=false;
    StringTokenizer ST;
    if (Delimiter==null) Delimiter=Default_Delimiter;
    if (new File(File_Name).exists())
      try
        String Line,Str=Tool_Lib.Read_File(File_Name).toString();
        ST=new StringTokenizer(Str,"\n");
        Line=ST.nextToken();
        Row_Count=ST.countTokens();
        Object[][] Table_Data=new Object[Row_Count][];
        if (Delimiter.equals(" ")) Line=Line.replaceAll(" {2,}"," ").trim();     // Replace multiple spaces with the delimiter space
        Table_Column_Names=Line.split(Delimiter);
        columnNames=Table_Column_Names;
        for (int i=0;i<Table_Column_Names.length;i++) Column_Name_Line+=Table_Column_Names[i]+"  ";
//Out("Column_Name_Line [ "+Table_Column_Names.length+" ]="+Column_Name_Line);
        while (ST.hasMoreTokens())
          Line=ST.nextToken();
//Out(Line);
          if (Delimiter.equals(" ")) Line=Line.replaceAll(" {2,}"," ").trim();   // Replace multiple spaces with the delimiter space
          if (Line.indexOf(Delimiter)!=-1) Table_Data[Index]=Line.split(Delimiter);
          else
            Table_Data[Index]=new Object[Table_Column_Names.length];
            Table_Data[Index][0]=Line;
            for (int i=1;i<Table_Column_Names.length;i++) Table_Data[Index]="";
Index++;
Line="";
for (int i=0;i<Table_Data.length;i++)
Line+="[ "+Table_Data[i].length+" ] ";
for (int j=0;j<Table_Data[i].length;j++) Line+=Table_Data[i][j]+" ";
Line+="\n";
Out(Line);
Table_Panel A_Table_Panel=new Table_Panel(File_Name,Table_Column_Names,Table_Data,Row_Count,Is_Child,Show_External_Table,Manage_Attachment,Row_Color_Style,Preffered_Width,Selection_Color,In_Original_Order);
Table=A_Table_Panel.Table;
scrollPane=A_Table_Panel.scrollPane;
Column_Width=A_Table_Panel.Column_Width;
data=A_Table_Panel.data;
catch (Exception e) { e.printStackTrace(); }
public void setPreferredSize(Dimension A_Dimension) { scrollPane.setPreferredSize(A_Dimension); }
// This method picks good column sizes. If all column heads are wider than the column's cells' contents, then you can just use column.sizeWidthToFit().
void initColumnSizes(JTable table,TableModel model)
TableColumn column=null;
Component comp=null;
int headerWidth=0,cellWidth=0;
Object[] longValues=(data.length>0)?data[0]:null;
TableCellRenderer headerRenderer=table.getTableHeader().getDefaultRenderer();
if (data.length<1) return;
for (int i=0;i<model.getColumnCount();i++)
column=table.getColumnModel().getColumn(i);
comp=headerRenderer.getTableCellRendererComponent(null,column.getHeaderValue(),false,false,0,0);
headerWidth=comp.getPreferredSize().width;
comp=table.getDefaultRenderer(model.getColumnClass(i)).
getTableCellRendererComponent(table,longValues[i],false,false,0,i);
cellWidth=comp.getPreferredSize().width;
switch (Preffered_Width)
case Max_Header_Cell_Width : column.setPreferredWidth(Math.max(headerWidth,cellWidth));break;
case Header_Width : column.setPreferredWidth(headerWidth);break;
case Cell_Width : column.setPreferredWidth(cellWidth);break;
Column_Width[i]=column.getPreferredWidth();
if (Debug) Out("Initializing width of column "+i+". "+"headerWidth="+headerWidth+"; cellWidth="+cellWidth+" Column_Width["+i+"]="+Column_Width[i]);
// Detects a state change in any of the Lists. Resets the variable corresponding to the selected item in a particular List. Invokes changeFont with the currently selected fontname, style and size attributes.
public void itemStateChanged(ItemEvent e)
Out(e.toString());
if (e.getStateChange() != ItemEvent.SELECTED) return;
Object list=e.getSource();
public static void Out(String message) { System.out.println(message); }
// Create the GUI and show it. For thread safety, this method should be invoked from the event-dispatching thread.
static void Create_And_Show_GUI()
boolean Demo_External_Table=true;
// boolean Demo_External_Table=false;
final Table_Panel demo;
String[] columnNames={"First Names","Last Names","Sport","Num of Years","Vegetarian"};
Object[][] data={{"Mary","Campione","Snowboarding"+"[123456789]",new Integer(5),new Boolean(false)},
{"Alison","Huml","Rowing"+":123456789]",new Integer(3),new Boolean(true)},
{"Frank","Ni","Running"+":123456789", new Integer(12), new Boolean(false)},
{"Kathy","Walrath","Chasing toddlers"+"<123456789>", new Integer(2), new Boolean(false)},
{"Mark", "Andrews","Speed reading",new Integer(20),new Boolean(true)},
{"Angela","Lih","Teaching high school",new Integer(36),new Boolean(false)} };
// Row_Color_Style=Row_Color_Style_Default;
// Row_Color_Style=Row_Color_Style_None;
// Row_Color_Style=Row_Color_Style_Blue_Gray;
Row_Color_Style=Row_Color_Style_Cyan_Gray;
// Row_Color_Style=Row_Color_Style_Blue;
// Row_Color_Style=Row_Color_Style_Gray;
// Row_Color_Style=Row_Color_Style_Red_Green;
// Row_Color_Style=Row_Color_Style_Green_Yellow;
// Row_Color_Style=Row_Color_Style_Red_Yellow;
Preffered_Width=Max_Header_Cell_Width;
if (Demo_External_Table) demo=new Table_Panel("External Table Demo",columnNames,data,data.length,false,Demo_External_Table,false,Row_Color_Style,Max_Header_Cell_Width,Default_Selection_Color,true);
else
JFrame Table_Frame=new JFrame("Internal Table Demo");
// demo=new Table_Panel(Nm_Lib.Dir_A_Test+"ELX.csv",false,Row_Color_Style,Preffered_Width,null);
// demo=new Table_Panel(Nm_Lib.Dir_Stock_Data+"ABV_Data.txt",false,Row_Color_Style,Preffered_Width," ");
demo=new Table_Panel("C:/Dir_Stock_Data/EOP.txt",",",false);
// demo=new Table_Panel(Nm_Lib.Dir_Stock_Data+"ABV_Data.txt"," ",false);
Table_Frame.getContentPane().add(demo.scrollPane);
Table_Frame.addWindowListener(new WindowAdapter()
public void windowActivated(WindowEvent e) { }
public void windowClosed(WindowEvent e) { }
public void windowClosing(WindowEvent e) { System.exit(0); }
public void windowDeactivated(WindowEvent e) { }
public void windowDeiconified(WindowEvent e) { demo.repaint(); }
public void windowGainedFocus(WindowEvent e) { demo.repaint(); }
public void windowIconified(WindowEvent e) { }
public void windowLostFocus(WindowEvent e) { }
public void windowOpening(WindowEvent e) { demo.repaint(); }
public void windowOpened(WindowEvent e) { }
public void windowResized(WindowEvent e) { demo.repaint(); }
public void windowStateChanged(WindowEvent e) { demo.repaint(); }
Table_Frame.pack();
Table_Frame.setBounds((Screen_Size.width-Table_Frame.getWidth())/2,(Screen_Size.height-Table_Frame.getHeight())/2,Table_Frame.getWidth(),Table_Frame.getHeight());
Table_Frame.setVisible(true);
public static void main(String[] args)
// Schedule a job for the event-dispatching thread : creating and showing this application's GUI.
SwingUtilities.invokeLater(new Runnable() { public void run() { Create_And_Show_GUI(); } });
* TableSorter is a decorator for TableModels; adding sorting functionality to a supplied TableModel. TableSorter does not store
* or copy the data in its TableModel; instead it maintains a map from the row indexes of the view to the row indexes of the
* model. As requests are made of the sorter (like getValueAt(row, col)) they are passed to the underlying model after the row numbers
* have been translated via the internal mapping array. This way, the TableSorter appears to hold another copy of the table
* with the rows in a different order.
* <p/>
* TableSorter registers itself as a listener to the underlying model, just as the JTable itself would. Events recieved from the model
* are examined, sometimes manipulated (typically widened), and then passed on to the TableSorter's listeners (typically the JTable).
* If a change to the model has invalidated the order of TableSorter's rows, a note of this is made and the sorter will resort the
* rows the next time a value is requested.
* <p/>
* When the tableHeader property is set, either by using the setTableHeader() method or the two argument constructor, the table
* header may be used as a complete UI for TableSorter. The default renderer of the tableHeader is decorated with a renderer
* that indicates the sorting status of each column. In addition, a mouse listener is installed with the following behavior:
* <ul>
* <li>
* Mouse-click: Clears the sorting status of all other columns and advances the sorting status of that column through three
* values: {NOT_SORTED, ASCENDING, DESCENDING} (then back to NOT_SORTED again).
* <li>
* SHIFT-mouse-click: Clears the sorting status of all other columns and cycles the sorting status of the column through the same
* three values, in the opposite order: {NOT_SORTED, DESCENDING, ASCENDING}.
* <li>
* CONTROL-mouse-click and CONTROL-SHIFT-mouse-click: as above except that the changes to the column do not cancel the statuses of columns
* that are already sorting - giving a way to initiate a compound sort.
* </ul>
* <p/>
* This is a long overdue rewrite of a class of the same name that first appeared in the swing table demos in 1997.
* @author Philip Milne
* @author Brendon McLean
* @author Dan van Enckevort
* @author Parwinder Sekhon
* @version 2.0 02/27/04
class TableSorter extends AbstractTableModel
public static final long serialVersionUID=26362862L;
protected TableModel tableModel;
public static final int DESCENDING = -1;
public static final int NOT_SORTED = 0;
public static final int ASCENDING = 1;
private static Directive EMPTY_DIRECTIVE = new Directive(-1, NOT_SORTED);
public static final Comparator COMPARABLE_COMAPRATOR = new Comparator() { public int compare(Object o1, Object o2) { return ((Comparable) o1).compareTo(o2); } };
public static final Comparator LEXICAL_COMPARATOR = new Comparator() { public int compare(Object o1, Object o2) { return o1.toString().compareTo(o2.toString()); } };
private Row[] viewToModel;
private int[] modelToView;
private JTableHeader tableHeader;
private MouseListener mouseListener;
private TableModelListener tableModelListener;
private Map<Class,Comparator> columnComparators = new HashMap<Class,Comparator>();
private List<Directive> sortingColumns = new ArrayList<Directive>();
public TableSorter()
this.mouseListener = new MouseHandler();
this.tableModelListener = new TableModelHandler();
public TableSorter(TableModel tableModel)
this();
setTableModel(tableModel);
public TableSorter(TableModel tableModel, JTableHeader tableHeader)
this();
setTableHeader(tableHeader);
setTableModel(tableModel);
private void clearSortingState()
viewToModel = null;
modelToView = null;
public TableModel getTableModel() { return tableModel; }
public void setTableModel(TableModel tableModel)
if (this.tableModel != null) { this.tableModel.removeTableModelListener(tableModelListener); }
this.tableModel = tableModel;
if (this.tableModel != null) { this.tableModel.addTableModelListener(tableModelListener); }
clearSortingState();
fireTableStructureChanged();
public JTableHeader getTableHeader() { return tableHeader; }
public void setTableHeader(JTableHeader tableHeader)
if (this.tableHeader != null)
this.tableHeader.removeMouseListener(mouseListener);
TableCellRenderer defaultRenderer = this.tableHeader.getDefaultRenderer();
if (defaultRenderer instanceof SortableHeaderRenderer) this.tableHeader.setDefaultRenderer(((SortableHeaderRenderer) defaultRenderer).tableCellRenderer);
this.tableHeader = tableHeader;
if (this.tableHeader != null)
this.tableHeader.addMouseListener(mouseListener);
this.tableHeader.setDefaultRenderer(
new SortableHeaderRenderer(this.tableHeader.getDefaultRenderer()));
public boolean isSorting() { return sortingColumns.size() != 0; }
private Directive getDirective(int column)
for (int i = 0; i < sortingColumns.size(); i++)
Directive directive = (Directive)sortingColumns.get(i);
if (directive.column == column) { return directive; }
return EMPTY_DIRECTIVE;
public int getSortingStatus(int column) { return getDirective(column).direction; }
private void sortingStatusChanged()
clearSortingState();
fireTableDataChanged();
if (tableHeader != null) { tableHeader.repaint(); }
public void setSortingStatus(int column, int status)
Directive directive = getDirective(column);
if (directive != EMPTY_DIRECTIVE) { sortingColumns.remove(directive); }
if (status != NOT_SORTED) { sortingColumns.add(new Directive(column, status)); }
sortingStatusChanged();
protected Icon getHeaderRendererIcon(int column, int size)
Directive directive = getDirective(column);
if (directive == EMPTY_DIRECTIVE) { return null; }
return new Arrow(directive.direction == DESCENDING, size, sortingColumns.indexOf(directive));
private void cancelSorting()
sortingColumns.clear();
sortingStatusChanged();
public void setColumnComparator(Class type, Comparator comparator)
if (comparator == null) { columnComparators.remove(type); }
else { columnComparators.put(type, comparator); }
protected Comparator getComparator(int column)
Class columnType = tableModel.getColumnClass(column);
Comparator comparator = (Comparator) columnComparators.get(columnType);
if (comparator != null) { return comparator; }
if (Comparable.class.isAssignableFrom(columnType)) { return COMPARABLE_COMAPRATOR; }
return LEXICAL_COMPARATOR;
private Row[] getViewToModel()
if (viewToModel == null)
int tableModelRowCount = tableModel.getRowCount();
viewToModel = new Row[tableModelRowCount];
for (int row = 0; row < tableModelRowCount; row++) { viewToModel[row] = new Row(row); }
if (isSorting()) { Arrays.sort(viewToModel); }
return viewToModel;
public int modelIndex(int viewIndex) { return getViewToModel()[viewIndex].modelIndex; }
private int[] getModelToView()
if (modelToView == null)
int n = getViewToModel().length;
modelToView = new int[n];
for (int i = 0; i < n; i++) { modelToView[modelIndex(i)] = i; }
return modelToView;
// TableModel interface methods
public int getRowCount() { return (tableModel == null) ? 0 : tableModel.getRowCount(); }
public int getColumnCount() { return (tableModel == null) ? 0 : tableModel.getColumnCount(); }
public String getColumnName(int column) { return tableModel.getColumnName(column); }
public Class getColumnClass(int column) { return tableModel.getColumnClass(column); }
public boolean isCellEditable(int row, int column) { return tableModel.isCellEditable(modelIndex(row), column); }
public Object getValueAt(int row, int column) { return tableModel.getValueAt(modelIndex(row), column); }
public void setValueAt(Object aValue, int row, int column) { tableModel.setValueAt(aValue, modelIndex(row), column); }
// Helper classes
private class Row implements Comparable
private int modelIndex;
public Row(int index) { this.modelIndex = index; }
public int compareTo(Object o)
int row1 = modelIndex;
int row2 = ((Row) o).modelIndex;
for (Iterator it = sortingColumns.iterator(); it.hasNext();)
Directive directive = (Directive) it.next();
int column = directive.column;
Object o1 = tableModel.getValueAt(row1, column);
Object o2 = tableModel.getValueAt(row2, column);
int comparison = 0;
// Define null less than everything, except null.
if (o1 == null && o2 == null) { comparison = 0; }
else if (o1 == null) { comparison = -1; }
else if (o2 == null) { comparison = 1; }
else { comparison = getComparator(column).compare(o1, o2); }
if (comparison != 0) { return directive.direction == DESCENDING ? -comparison : comparison; }
return 0;
private class TableModelHandler implements TableModelListener
public void tableChanged(TableModelEvent e)
// If we're not sorting by anything