Java 当前时间面板的构建 自动更新时间

问题：

      众所周知，很多软件会在某一个地方显示当前时间，以方便用户进行操作，今天我贴一段代码实现时间面板的构建和自动更新时间

 

图例：

 

代码：

 

package Test.csdn;import java.awt.BorderLayout;import java.awt.Color;import java.awt.Font;import java.awt.GridLayout;import java.util.Calendar;import java.util.Date;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.SwingConstants;public class TimePanel extends JFrame {/** * @Fields serialVersionUID : TODO */private static final long serialVersionUID = 1L;private static JPanel panel;private static JLabel date;private static JLabel week;public static JLabel time;private static final Calendar NOW = Calendar.getInstance();private static final int YEAR = NOW.get(Calendar.YEAR);private static final int MONTH = NOW.get(Calendar.MONTH) + 1;private static final int DAY = NOW.get(Calendar.DAY_OF_MONTH);private static final int WEEK = NOW.get(Calendar.DAY_OF_WEEK);private CTime ctime = new CTime();public TimePanel() {this.setTitle("时间面板测试");this.setSize(200, 200);this.add(newInstance(), BorderLayout.CENTER);this.setLocationRelativeTo(null); // 居中显示this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // 设置关闭方式}public static JPanel newInstance() {panel = new JPanel();panel.setLayout(new GridLayout(0, 1, 10, 8));panel.add(buildDate());panel.add(buildWeek());panel.add(buildTime());return panel;}// 日期标签private static JLabel buildDate() {date = buildLabel(getDateOfShow());return date;}// 星期标签private static JLabel buildWeek() {week = buildLabel(getDayOfWeek());return week;}// 当前时间标签private static JLabel buildTime() {time = buildLabel("");time.setForeground(Color.RED);return time;}private static JLabel buildLabel(String value) {JLabel label = new JLabel(value);Font font = new Font("", Font.BOLD, 12);label.setFont(font);label.setHorizontalAlignment(SwingConstants.CENTER);return label;}public static String getDateOfShow() {return YEAR + "年" + MONTH + "月" + DAY + "日";}public static String getDayOfWeek() {String dayOfWeek = "";switch (WEEK) {case 1:dayOfWeek = "星期日";break;case 2:dayOfWeek = "星期一";break;case 3:dayOfWeek = "星期二";break;case 4:dayOfWeek = "星期三";break;case 5:dayOfWeek = "星期四";break;case 6:dayOfWeek = "星期五";case 7:dayOfWeek = "星期六";break;}return dayOfWeek;}public static void main(String[] args) {TimePanel test = new TimePanel();test.setVisible(true);test.ctime.run();}class CTime extends Thread {// 创建内部类public void run() {// 重构父类的方法while (true) {Date date = new Date();// 创建日期对象time.setText(date.toString().substring(11, 19));// 获取当前时间，并显示到时间标签中try {Thread.sleep(1000);// 令线程休眠1秒} catch (InterruptedException e) {e.printStackTrace();}}}}}