What this is

This file is part of the Tame Swing collection that we have compiled. All of the Java source code in these examples was created by Nobuo Tamemasa. As these examples have become hard to find on the internet, we have put them in one place here, supported by minimal advertising. In time we will include images of each running sample Java/Swing application.

The intent of having these files here is to help you learn Java and Swing by example, and Tame certainly created some terrific examples of the power of the Swing framework.

Other links

Keywords/tags

java, swing, example, sample, source, custom, table, jtable, cell, renderer, editor, event, scroll, separator

The source code

/* (swing1.1beta3) */
package tame.examples;

import java.awt.Container;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.Vector;

import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JSeparator;
import javax.swing.JTable;
import javax.swing.SwingConstants;
import javax.swing.event.TableModelEvent;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableModel;

/**
<pre>
java.lang.ArrayIndexOutOfBoundsException: 3 >= 3
        at java.util.Vector.elementAt(Vector.java:432)
        at tame.examples.UnionDataExample$3.getValueAt(UnionDataExample.java:64)
</pre>
@author Nobuo Tamemasa
@version 1.0 11/09/98
*/
public class UnionDataExample extends JFrame {

  UnionDataExample() {
    super( "UnionData Example" );
    setSize( 300, 200 );

    final String[] headers =  {"a", "b", "c", "d"};
    final String[][] data  = new String[6][headers.length];

    final AbstractTableModel dmAB  = new AbstractTableModel() {
      public int getRowCount() { return data.length; }
      public int getColumnCount() { return headers.length; }
      public String getColumnName(int col) { return headers[col]; }
      public Object getValueAt(int row, int col) {
        return data[row][col];
      }
    };

    final int rowCountA = 3;
    DefaultTableModel dmA  = new DefaultTableModel(data, headers) {
      public int getRowCount() { return rowCountA; }
      public Object getValueAt(int row, int col) {
        Vector rowVector = (Vector)dataVector.elementAt(row);
        return rowVector.elementAt(col);
      }
      public void setValueAt(Object value, int row, int col) {
        data[row][col] = (String)value;
        Vector rowVector = (Vector)dataVector.elementAt(row);
        rowVector.setElementAt(value, col);
        TableModelEvent event = new TableModelEvent(this, row, row, col);
        fireTableChanged(event);
        dmAB.fireTableChanged(event);
      }
    };

    DefaultTableModel dmB  = new DefaultTableModel(data, headers) {
      public int getRowCount() { return rowCountA; }
      //public int getRowCount() { return data.length - rowCountA; }
      public Object getValueAt(int row, int col) {
        Vector rowVector = (Vector)dataVector.elementAt(row + rowCountA);
        return rowVector.elementAt(col);
      }
      public void setValueAt(Object value, int row, int col) {
        int sRow = row + rowCountA;
        data[sRow][col] = (String)value;
        Vector rowVector = (Vector)dataVector.elementAt(sRow);
        rowVector.setElementAt(value, col);
        TableModelEvent event = new TableModelEvent(this, sRow, sRow, col);
        fireTableChanged(event);
        dmAB.fireTableChanged(event);
      }
    };

    JScrollPane scrollA  = new JScrollPane(new JTable( dmA  ));
    JScrollPane scrollB  = new JScrollPane(new JTable( dmB  ));
    JScrollPane scrollAB = new JScrollPane(new JTable( dmAB ));

    Box box = new Box(BoxLayout.Y_AXIS);
    box.add(new JLabel("Table A"));
    box.add(scrollA);
    box.add(new JSeparator(SwingConstants.VERTICAL));
    box.add(new JLabel("Table B"));
    box.add(scrollB);
    Box boxAB = new Box(BoxLayout.Y_AXIS);
    boxAB.add(new JLabel("Table A + B"));
    boxAB.add(scrollAB);
    Container content = getContentPane();
    content.setLayout(new BoxLayout(content,BoxLayout.X_AXIS));
    content.add(box);
    content.add(new JSeparator(SwingConstants.HORIZONTAL));
    content.add(boxAB);
  }

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