Here you can find the source of tableModelToArray(JTable table, boolean onlyTheSelectedRows)
public static Object[][] tableModelToArray(JTable table, boolean onlyTheSelectedRows)
//package com.java2s; /*//from w w w . j a va2s . c o m * This file is part of YaBS. YaBS is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. YaBS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with YaBS. If not, see <http://www.gnu.org/licenses/>. * */ import javax.swing.JTable; import javax.swing.table.DefaultTableModel; public class Main { public static Object[][] tableModelToArray(JTable table) { return tableModelToArray(table, false); } public static Object[][] tableModelToArray(JTable table, boolean onlyTheSelectedRows) { DefaultTableModel model = (DefaultTableModel) table.getModel(); Object[][] data; int[] selections = table.getSelectedRows(); if (onlyTheSelectedRows) { data = new Object[selections.length][model.getColumnCount()]; } else { data = new Object[model.getRowCount()][model.getColumnCount()]; } if (!onlyTheSelectedRows) { for (int idx = 0; idx < model.getRowCount(); idx++) { for (int i = 0; i < model.getColumnCount(); i++) { data[idx][i] = model.getValueAt(idx, i); } } } else { for (int idx = 0; idx < selections.length; idx++) { int row = selections[idx]; for (int i = 0; i < model.getColumnCount(); i++) { data[idx][i] = model.getValueAt(row, i); } } } return data; } }