Set table value : JTable Model « Swing « Java Tutorial

1. Java Tutorial
2. Swing
3. JTable Model

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 SetValueAtToSetValue extends JFrame {
  public SetValueAtToSetValue() {
    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[]) {
    SetValueAtToSetValue ex2 = new SetValueAtToSetValue();
    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);
  }
}

14.59.JTable Model
	14.59.1.	Create DefaultTableModel
	14.59.2.	Creating simple JTable using AbstractTableModel
	14.59.3.	Extending AbstractTableModel
	14.59.4.	Creates tables that allow rows and columns to be added or deleted
	14.59.5.	Set table value
	14.59.6.	Add logic to get value method
	14.59.7.	Subclass AbstractTableModel to reuse an existing data structure: Treat an array as an AbstractTableModel
	14.59.8.	Sparsely Populated Table Model
	14.59.9.	Listening to JTable Events with a TableColumnModelListener
	14.59.10.	The Calendar program.
	14.59.11.	Sample Sorting Table Model
	14.59.12.	Add columns to a table through DefaultTableModel
	14.59.13.	Insert a row to a table through DefaultTableModel
	14.59.14.	Insert a row to a table through DefaultTableModel at specified row
	14.59.15.	Append a row to a table through DefaultTableModel at specified row
	14.59.16.	Remove the first row from a table with DefaultTableModel
	14.59.17.	Remove the last row from a table with DefaultTableModel
	14.59.18.	Move the first row to the end of the table
	14.59.19.	Move the first two rows to the end of the table
	14.59.20.	Move the last two rows to the start of the table
	14.59.21.	Move the last row to the beginning of the table
	14.59.22.	Get all the table data from DefaultTableModel
	14.59.23.	Copy (clone) the data from the second row
	14.59.24.	Overwrite the date from the first row with DefaultTableModel
	14.59.25.	Add rows to a Table
	14.59.26.	Sharing a Table Model Between JTable Components
	14.59.27.	Disabling User Edits in a JTable with DefaultTableModel
	14.59.28.	Appending a Row to a JTable Component
	14.59.29.	Copy data from a table to a list
	14.59.30.	Map TableModel
	14.59.31.	Bean Property Table Model