jdatefield.java

OpenSwing的经典示例

package com.sunking.swing;

/**
 * <p>Title: OpenSwing</p>
 * <p>Description: JDateField 日期输入框</p>
 *                 确保输入正确的日期
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: </p>
 * @author <a href="mailto:[e-mail]">SunKing</a>
 * @version 1.0
 */

import javax.swing.*;
import java.text.*;
import java.awt.*;
import java.util.*;
import java.io.*;

public class JDateField
    extends JTextField
    implements Serializable {
    /**
     * 年月日格式
     */
    public static final SimpleDateFormat dateFormat
        = new SimpleDateFormat("yyyy-MM-dd");

    private JDatePicker.JDateDocument doc = new JDatePicker.JDateDocument(this);
    public JDateField() {
        setPreferredSize(new Dimension(100, 25));
        setDocument(doc);
        super.setHorizontalAlignment(JTextField.CENTER);
    }

    /**
     * 取得日期
     * @return Date
     */
    public Date getDate() {
        try {
            return dateFormat.parse(this.getText());
        }
        catch (Exception ex) {
            return new Date();
        }
    }

    /**
     * 设置日期
     * @return Date
     */
    public void setDate(Date date) {
        try {
            dateFormat.format(date);
        }
        catch (Exception ex) {
            dateFormat.format(new Date());
        }
    }

    /**
     * 测试
     * @param args String[]
     */
    public static void main(String[] args) {
//        try {
//            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
//        }
//        catch (Exception e) {
//        }
        JFrame frame = new JFrame();
//        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setTitle("JDateField Demo");
        frame.getContentPane().setLayout(new FlowLayout());
        frame.getContentPane().add(new JDateField(), BorderLayout.CENTER);
        frame.setSize(400, 320);
        Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
        frame.setLocation( (d.width - frame.getSize().width) / 2,
                          (d.height - frame.getSize().height) / 2);
        frame.setVisible(true);
    }
}