EditableTable.java Source code

Introduction

Here is the source code for EditableTable.java

Source

import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableModel;

public class EditableTable {

    public static void main(String[] a) {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        String[] columnTitles = { "First Name", "Last Name", "Weight (lb)", "Blood Group", "Age>20yrs" };
        Object[][] dataEntries = { { "Saravan", "Pantham", new Integer(50), "B", new Boolean(false) },
                { "Eric", "", new Integer(180), "O", new Boolean(true) },
                { "John", "", new Integer(120), "AB", new Boolean(false) },
                { "Mathew", "", new Integer(140), "A", new Boolean(true) }, };
        TableModel model = new EditableTableModel(columnTitles, dataEntries);
        JTable table = new JTable(model);
        table.createDefaultColumnsFromModel();

        String[] bloodGroups = { "A", "B", "AB", "O" };
        JComboBox comboBox = new JComboBox(bloodGroups);
        table.getColumnModel().getColumn(3).setCellEditor(new DefaultCellEditor(comboBox));

        frame.add(new JScrollPane(table));

        frame.setSize(300, 200);
        frame.setVisible(true);
    }

}

class EditableTableModel extends AbstractTableModel {
    String[] columnTitles;

    Object[][] dataEntries;

    int rowCount;

    public EditableTableModel(String[] columnTitles, Object[][] dataEntries) {
        this.columnTitles = columnTitles;
        this.dataEntries = dataEntries;
    }

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

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

    public Object getValueAt(int row, int column) {
        return dataEntries[row][column];
    }

    public String getColumnName(int column) {
        return columnTitles[column];
    }

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

    public boolean isCellEditable(int row, int column) {
        return true;
    }

    public void setValueAt(Object value, int row, int column) {
        dataEntries[row][column] = value;
    }
}