Java Source - Union Data Example.

The following code union 2 tables input into the third table dynamically.
Mã sau hiển thị 2 bảng đầu vào vào và bảng thứ ba động lưu trữ giá trị của 2 bảng.





UnionDataExample.java

//Example modified from http://www.crionics.com/products/opensource/faq/swing_ex/JTableExamples2.html
//Original example doesn't work

/**
 * @version 1.0 12/03/98
 */
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;

/**
 * @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() {
            @Override
            public int getRowCount() {
                return data.length;
            }

            @Override
            public int getColumnCount() {
                return headers.length;
            }

            @Override
            public String getColumnName(int col) {
                return headers[col];
            }

            @Override
            public Object getValueAt(int row, int col) {
                return data[row][col];
            }
        };

        final int rowCountA = 3;
        DefaultTableModel dmA = new DefaultTableModel(data, headers) {
            @Override
            public int getRowCount() {
                return rowCountA;
            }

            @Override
            public Object getValueAt(int row, int col) {

                Vector rowVector = (Vector) dataVector.elementAt(row);

                return rowVector.elementAt(col);
            }

            @Override
            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) {
            @Override
            public int getRowCount() {
                return rowCountA;
            }

            @Override
            public void setValueAt(Object value, int row, int col) {
                int sRow = row + rowCountA;
                data[sRow][col] = (String) value;
                Vector rowVector = (Vector) dataVector.elementAt(row);
                rowVector.setElementAt(value, col);
                TableModelEvent event = new TableModelEvent(this, sRow, sRow, col);
                fireTableChanged(event);
                dmAB.fireTableChanged(event);
            }

            @Override
            public Object getValueAt(int row, int col) {
                Vector rowVector = (Vector) dataVector.elementAt(row);
                return rowVector.elementAt(col);
            }
        };

        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() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
        frame.setVisible(true);
    }
}

Kết quả - Result