TableIt.java Source code

Introduction

Here is the source code for TableIt.java

Source

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.border.Border;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;
import javax.swing.table.TableModel;

public class TableIt {

    class MyTableCellRenderer extends JLabel implements TableCellRenderer {
        final Border blueBorder = BorderFactory.createLineBorder(Color.BLUE);

        MyTableCellRenderer() {
            setOpaque(true);
        }

        public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected,
                boolean hasFocus, int row, int col) {
            setBackground((Color) value);
            if (isSelected) {
                setBorder(blueBorder);
            } else {
                setBorder(BorderFactory.createEmptyBorder());
            }
            return this;
        }
    }

    class MyTableModel extends DefaultTableModel {
        Object data[][] = { { "1", Color.RED }, { "2", Color.ORANGE }, { "3", Color.YELLOW }, { "4", Color.GREEN },
                { "5", Color.BLUE }, { "6", Color.MAGENTA }, { "7", Color.CYAN }, { "8", Color.PINK },
                { "9", Color.BLACK }, { "10", Color.GRAY } };

        MyTableModel() {
            setColumnIdentifiers(new String[] { "ID", "Name", "Color" });
            for (int i = 0, n = data.length; i < n; i++)
                addRow(new Object[] { new Integer(i + 1), data[i][0], data[i][1] });
        }

        public boolean isCellEditable(int row, int column) {
            return (column != 0);
        }
    }

    public TableIt() {
        JFrame f = new JFrame();
        TableModel tm = new MyTableModel();
        final JTable table = new JTable(tm);

        TableColumnModel tcm = table.getColumnModel();
        TableColumn column = tcm.getColumn(tcm.getColumnCount() - 1);
        TableCellRenderer renderer = new MyTableCellRenderer();
        column.setCellRenderer(renderer);

        JButton selectionType = new JButton("Next Type");
        selectionType.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                boolean rowSet = table.getRowSelectionAllowed();
                boolean colSet = table.getColumnSelectionAllowed();
                boolean cellSet = table.getCellSelectionEnabled();

                boolean setRow = !rowSet;
                boolean setCol = rowSet ^ colSet;
                boolean setCell = rowSet & colSet;

                table.setCellSelectionEnabled(setCell);
                table.setColumnSelectionAllowed(setCol);
                table.setRowSelectionAllowed(setRow);
                System.out.println("Row Selection Allowed? " + setRow);
                System.out.println("Column Selection Allowed? " + setCol);
                System.out.println("Cell Selection Enabled? " + setCell);
                table.repaint();
            }
        });
        JButton selectionMode = new JButton("Next Mode");
        selectionMode.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                ListSelectionModel lsm = table.getSelectionModel();
                int mode = lsm.getSelectionMode();
                int nextMode;
                String nextModeString;
                if (mode == ListSelectionModel.SINGLE_SELECTION) {
                    nextMode = ListSelectionModel.SINGLE_INTERVAL_SELECTION;
                    nextModeString = "Single Interval Selection";
                } else if (mode == ListSelectionModel.SINGLE_INTERVAL_SELECTION) {
                    nextMode = ListSelectionModel.MULTIPLE_INTERVAL_SELECTION;
                    nextModeString = "Multiple Interval Selection";
                } else {
                    nextMode = ListSelectionModel.SINGLE_SELECTION;
                    nextModeString = "Single Selection";
                }
                lsm.setSelectionMode(nextMode);
                System.out.println("Selection Mode: " + nextModeString);
                table.repaint();
            }
        });
        JPanel jp = new JPanel();
        jp.add(selectionType);
        jp.add(selectionMode);
        JScrollPane jsp = new JScrollPane(table);
        Container c = f.getContentPane();
        c.add(jsp, BorderLayout.CENTER);
        c.add(jp, BorderLayout.SOUTH);
        f.setSize(300, 250);
        f.show();
    }

    public static void main(String args[]) {
        new TableIt();
    }
}