Qnz 求助JAVA的Calendar刷新问题

Question

本帖最后由 lianhua123 于 2009-07-18 15:48:44 编辑

Answer 1

import java.awt.*;
import java.awt.event.*;
import java.util.Calendar;
import javax.swing.*;//界面类 class ClockFace extends JFrame {
private int currentyear = 0; private int currentmonth = 0; private int currentday = 0; private int currenthour = 0; private int currentmin = 0; private int currentsec = 0; JTextField dateTextField = new JTextField(); JTextField timeTextField = new JTextField(); JButton refresh = new JButton("Fresh"); public ClockFace() {
super("CLOCK");
Container c = getContentPane();
c.setLayout(new GridLayout(3, 1));
c.add(dateTextField);
c.add(timeTextField);
refresh();
c.add(refresh);
refresh.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) {
refresh();
} });
setDefaultCloseOperation(DISPOSE_ON_CLOSE); } public void refresh() {
Calendar Cal = Calendar.getInstance();//这句要放在这里,每次重新得到时间
setyear(Cal.get(Calendar.YEAR));
setmonth(Cal.get(Calendar.MONTH) + 1);
setday(Cal.get(Calendar.DAY_OF_MONTH));
sethour(Cal.get(Calendar.HOUR_OF_DAY));
setmin(Cal.get(Calendar.MINUTE));
setsec(Cal.get(Calendar.SECOND));
System.out.println(Cal.get(Calendar.SECOND));
dateTextField.setText("" + currentyear + ":" + currentmonth + ":"
+ currentday);
timeTextField.setText("" + currenthour + ":" + currentmin + ":"
+ currentsec); } public void setyear(int n) {
currentyear = n;
} public void setmonth(int n) {
currentmonth = n;
} public void setday(int n) {
currentday = n;
} public void sethour(int n) {
currenthour = n;
} public void setmin(int n) {
currentmin = n;
} public void setsec(int n) {
currentsec = n;
}
}public class Clock { public static void main(String[] args) throws InterruptedException { ClockFace cf = new ClockFace();
cf.pack();
cf.setVisible(true); }
}