YearInputVerifier.java

/*
 * This file is part of BBCT.
 *
 * Copyright 2012-14 codeguru <codeguru@users.sourceforge.net>
 *
 * BBCT 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.
 *
 * BBCT 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package bbct.swing.gui.inputverifiers;

import javax.swing.InputVerifier;
import javax.swing.JComponent;
import javax.swing.JTextField;

/**
 * {@link YearInputVerifier} verifies that a
 * {@link javax.swing.JFormattedTextField} contains a positive four-digit
 * integer that can represent a year.
 */
public class YearInputVerifier extends InputVerifier {

    /**
     * Verify that a {@link javax.swing.JFormattedTextField} contains a positive
     * four-digit integer.
     *
     * @param jc The {@link javax.swing.JFormattedTextField} with input to
     * verify.
     * @return <code>true</code> if the {@link javax.swing.JFormattedTextField}
     * contains valid four-digit year, <code>false</code> otherwise.
     */
    @Override
    public boolean verify(JComponent jc) {
        if (this.isNumber.verify(jc)) {
            JTextField yearTextField = (JTextField) jc;
            int cardYear = Integer.parseInt(yearTextField.getText());
            return cardYear >= 1000 && cardYear <= 9999;
        }

        return false;
    }
    private InputVerifier isNumber = new PositiveIntegerInputVerifier();
}