Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;

public class Main extends JFrame {
    public Main() {
        final AbstractTableModel model = new MyModel();
        final JTable table = new JTable(model);
        getContentPane().add(new JScrollPane(table), BorderLayout.CENTER);
        model.setValueAt(new Integer(1), 0, 0);

        JButton button = new JButton("Increment selected cell");
        getContentPane().add(button, BorderLayout.SOUTH);
        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                int row = table.getSelectedRow();
                int column = table.convertColumnIndexToModel(table.getSelectedColumn());
                int currentValue = ((Integer) model.getValueAt(row, column)).intValue();
                model.setValueAt(new Integer(currentValue + 1), row, column);
            }
        });

        pack();
    }

    public static void main(String arg[]) {
        Main ex2 = new Main();
        ex2.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        ex2.setVisible(true);
    }
}

class MyModel extends AbstractTableModel {
    private int[][] table = { new int[3], new int[3], new int[3] };

    public MyModel() {
        for (int i = 0; i < 3; i++) {
            for (int j = 0; j < 3; j++) {
                table[i][j] = i * j;
            }
        }
    }

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

    public int getRowCount() {
        return table[0].length;
    }

    public Object getValueAt(int r, int c) {
        return new Integer(table[r][c]);
    }

    public void setValueAt(Object obj, int r, int c) {
        table[r][c] = ((Integer) obj).intValue();
        fireTableCellUpdated(r, c);
    }
}