java距离指定时间还有多少天
发布时间
阅读量：
阅读量
private static final long serialVersionUID = 1L;
private static int DELAY = 0;
private static int PERIOD = 1000;
//指定时间（可以任意修改）
private static final String DATE_TIME = "2021年11月30日";
private static final String INFO = "距 " + DATE_TIME + " 有: ";
private long that;
private JLabel label;
public Tester (){
setTitle ("倒计时牌");
setResizable (false);
setLayout (new BorderLayout ());
setSize (200, 100);
setLocationRelativeTo (null);
setAlwaysOnTop (true);
setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
}
private Tester runTimer ()
{
Timer timer = new Timer ();
timer.schedule (new TimerTask () {
@Override
public void run() {
long ms = that - new Date().getTime ();
int day = (int) ( ms / 1000 / 60 / 60 / 24 );
int hour = (int) ( ms / 1000 / 60 / 60 % 24 );
int minute = (int) ( ms / 1000 / 60 % 60 );
int second = (int) ( ms / 1000 % 60 );
label.setText ("<html>" + INFO + "<font color='red'>"
+ day + " 天 " + hour + " 时 " + minute + " 分 " + second + " 秒." + "</font></html>");
}
},DELAY,PERIOD);
return this;
}
private Tester init(){
String format = "";
if (DATE_TIME.matches ("^\ d+年$")){
format = "yyyy年";
}else if (DATE_TIME.matches ("\ d+年\ d+月")){
format = "yyyy年MM月";
}else if (DATE_TIME.matches ("\ d+年\ d+月\ d+日")){
format = "yyyy年MM月dd日";
}
SimpleDateFormat sdf = new SimpleDateFormat (format);
try{
that = sdf.parse (DATE_TIME).getTime();
}catch (ParseException e){
e.printStackTrace();
}
label = new JLabel();
JPanel panel = new JPanel(new FlowLayout(FlowLayout.CENTER));
panel.add(label);
add(panel,BorderLayout.CENTER);
return this;
}
public static void main ( String[] args){
SwingUtilities.invokeLater (new Runnable(){
@Override
public void run(){
new Tester().init().runTimer().setVisible(true);
}
});
}全部评论 (0)
还没有任何评论哟~