请问如何在swing中加入显示系统时间的部分 请问如何在swing中加入显示系统时间的部分 麻烦大家看看,谢谢了 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 import java.awt.Dimension;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.text.SimpleDateFormat;import java.util.Date;import java.util.*;import javax.swing.*;public class Calendar extends JFrame implements ActionListener, Runnable { private JLabel label; private JButton bt; private JTextArea year; private JTextArea month; private JTextArea day; private JTextArea hour; private JTextArea min; private JPanel panel; String time; int seconds=0; Date date=new Date(); public Calendar() { super(); panel = new JPanel(); SimpleDateFormat myFmt = new SimpleDateFormat("M/dd/yyyy hh:mm:ss a"); Date now = new Date(); seconds=now.getSeconds(); time = myFmt.format(now); label = new JLabel(time); panel.add(label); year = new JTextArea(); year.setColumns(5); month = new JTextArea(); month.setColumns(5); day = new JTextArea(); day.setColumns(5); hour = new JTextArea(); hour.setColumns(5); min = new JTextArea(); min.setColumns(5); panel.add(new JLabel("year")); panel.add(year); panel.add(new JLabel("month")); panel.add(month); panel.add(new JLabel("date")); panel.add(day); panel.add(new JLabel("hour")); panel.add(hour); panel.add(new JLabel("minute")); panel.add(min); bt = new JButton("change time"); bt.addActionListener(this); panel.add(bt); add(panel); this.setTitle("Watch"); this.setPreferredSize(new Dimension(125, 199)); } public void actionPerformed(ActionEvent action) { SimpleDateFormat myFmt = new SimpleDateFormat("M/dd/yyyy hh:mm:ss a"); Date curDate = new Date(); curDate.setYear(Integer.parseInt(year.getText()) - 1900); curDate.setMonth(Integer.parseInt(month.getText())); curDate.setDate(Integer.parseInt(day.getText())); curDate.setHours(Integer.parseInt(hour.getText())); curDate.setMinutes(Integer.parseInt(min.getText())); date=curDate; label.setText(myFmt.format(curDate)); this.repaint(); System.out.println(curDate.toLocaleString()); } public void run() { while (true) { try { Date dt=new Date(); int sec=dt.getSeconds(); int dur=sec-this.seconds; if(dur<0) dur+=60; GregorianCalendar gcl=new GregorianCalendar(); gcl.setTime(date); gcl.add(GregorianCalendar.SECOND,dur); Date dt1=gcl.getTime(); label.setText(dt1.toLocaleString()); Thread.sleep(100); } catch (InterruptedException ie) { } } } public static void main(String[] args) { Calendar demo = new Calendar(); demo.setVisible(true); demo.pack(); demo.run(); }} InflaterInputStream解压缩 菜鸟问题 请教高手!!谢谢!! 资源文件的操作 请问一个关于hashtable的问题 做过群发的或熟悉SMTP垃圾邮件处理的进来帮帮忙. 创建网站的 RSS 内容摘要 关于线程的producer/consumer问题 麻烦大家推荐JSP&Servlet经典好书! 请教MultipartRequest类(文件上传)的使用方法,多谢!多谢!多谢! 请教关于JAVA实现快速排序法 请问Java的各种GUI库中,各有什么优劣?哪种最好?
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.*;
import javax.swing.*;public class Calendar extends JFrame implements ActionListener, Runnable {
private JLabel label; private JButton bt; private JTextArea year; private JTextArea month; private JTextArea day; private JTextArea hour; private JTextArea min; private JPanel panel;
String time;
int seconds=0;
Date date=new Date();
public Calendar() {
super();
panel = new JPanel();
SimpleDateFormat myFmt = new SimpleDateFormat("M/dd/yyyy hh:mm:ss a");
Date now = new Date();
seconds=now.getSeconds();
time = myFmt.format(now);
label = new JLabel(time);
panel.add(label);
year = new JTextArea();
year.setColumns(5);
month = new JTextArea();
month.setColumns(5);
day = new JTextArea();
day.setColumns(5);
hour = new JTextArea();
hour.setColumns(5);
min = new JTextArea();
min.setColumns(5);
panel.add(new JLabel("year"));
panel.add(year);
panel.add(new JLabel("month"));
panel.add(month);
panel.add(new JLabel("date"));
panel.add(day);
panel.add(new JLabel("hour"));
panel.add(hour);
panel.add(new JLabel("minute"));
panel.add(min);
bt = new JButton("change time");
bt.addActionListener(this);
panel.add(bt);
add(panel);
this.setTitle("Watch");
this.setPreferredSize(new Dimension(125, 199));
} public void actionPerformed(ActionEvent action) {
SimpleDateFormat myFmt = new SimpleDateFormat("M/dd/yyyy hh:mm:ss a");
Date curDate = new Date();
curDate.setYear(Integer.parseInt(year.getText()) - 1900);
curDate.setMonth(Integer.parseInt(month.getText()));
curDate.setDate(Integer.parseInt(day.getText()));
curDate.setHours(Integer.parseInt(hour.getText()));
curDate.setMinutes(Integer.parseInt(min.getText()));
date=curDate;
label.setText(myFmt.format(curDate));
this.repaint();
System.out.println(curDate.toLocaleString());
} public void run() {
while (true) {
try {
Date dt=new Date();
int sec=dt.getSeconds();
int dur=sec-this.seconds;
if(dur<0)
dur+=60;
GregorianCalendar gcl=new GregorianCalendar();
gcl.setTime(date);
gcl.add(GregorianCalendar.SECOND,dur);
Date dt1=gcl.getTime();
label.setText(dt1.toLocaleString());
Thread.sleep(100);
} catch (InterruptedException ie) { }
}
} public static void main(String[] args) {
Calendar demo = new Calendar();
demo.setVisible(true);
demo.pack();
demo.run();
}
}