import javax.swing.*;import java.awt.*;
import java.awt.event.*;
import java.text.*;
import java.util.*;
class MainFrame extends JFrame{
JPanel panel=new JPanel(new BorderLayout());
JPanel panel1=new JPanel();
JPanel panel2=new JPanel(new GridLayout(7,7));
JPanel panel3=new JPanel();
JLabel []label=new JLabel[49];
JLabel y_label=new JLabel("年份");
JLabel m_label=new JLabel("月份");
JComboBox com1=new JComboBox();
JComboBox com2=new JComboBox();
JButton button=new JButton("查看");
JButton button2=new JButton("修改");
Date today = new Date();
JSpinner s = new JSpinner(new SpinnerDateModel(today, null, null, Calendar.MONTH));
JSpinner.DateEditor de = new JSpinner.DateEditor(s, "yyyy'年'MM'月'dd'日'HH:mm:ss");
int re_year,re_month;
int x_size,y_size;
String year_num;
Calendar now=Calendar.getInstance(); //实例化Calendar
MainFrame(){
super("万年历");
setSize(300,350);
x_size=(int)(Toolkit.getDefaultToolkit().getScreenSize().getWidth());
y_size=(int)(Toolkit.getDefaultToolkit().getScreenSize().getHeight());
setLocation((x_size-300)/2,(y_size-350)/2);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
panel1.add(y_label);
panel1.add(com1);
panel1.add(m_label);
panel1.add(com2);
panel1.add(button);
//panel3.add(new Clock(this));
s.setEditor(de);
s.setEnabled(true);
panel3.add(s);
panel3.add(button2);
for(int i=0;i<49;i++){
label[i]=new JLabel("",JLabel.CENTER);//将显示的字符设置为居中
panel2.add(label[i]);
}
panel.add(panel1,BorderLayout.NORTH);
panel.add(panel2,BorderLayout.CENTER);
panel.add(panel3,BorderLayout.SOUTH);
panel.setBackground(Color.white);
panel1.setBackground(Color.white);
panel2.setBackground(Color.white);
panel3.setBackground(Color.WHITE);
Init();
button.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
int c_year,c_month,c_week;
c_year=Integer.parseInt(com1.getSelectedItem().toString()); //得到当前所选年份
c_month=Integer.parseInt(com2.getSelectedItem().toString())-1; //得到当前月份,并减1,计算机中的月为0-11
c_week=use(c_year,c_month); //调用函数use,得到星期几
Resetday(c_week,c_year,c_month); //调用函数Resetday
}});
setContentPane(panel);
setVisible(true);
setResizable(false);
}
public void Init(){
int year,month_num,first_day_num;
String log[]={"日","一","二","三","四","五","六"};
for(int i=0;i<7;i++){
label[i].setText(log[i]);
}
for(int i=0;i<49;i=i+7){
label[i].setForeground(Color.red); //将星期日的日期设置为红色
}
for(int i=6;i<49;i=i+7){
label[i].setForeground(Color.green);//将星期六的日期设置为绿色
}
for(int i=1;i<10000;i++){
com1.addItem(""+i);
}
for(int i=1;i<13;i++){
com2.addItem(""+i);
}
month_num=(int)(now.get(Calendar.MONTH)); //得到当前时间的月份
year=(int)(now.get(Calendar.YEAR)); //得到当前时间的年份
com1.setSelectedIndex(year-1); //设置下拉列表显示为当前年
com2.setSelectedIndex(month_num); //设置下拉列表显示为当前月
first_day_num=use(year,month_num);
Resetday(first_day_num,year,month_num);
}
public int use(int reyear,int remonth){
int week_num;
now.set(reyear,remonth,1); //设置时间为所要查询的年月的第一天
week_num= (int)(now.get(Calendar.DAY_OF_WEEK));//得到第一天的星期
return week_num;
}
public void Resetday(int week_log,int year_log,int month_log){
int month_score_log; //判断是否是闰年的标记
int month_day_score; //存储月份的天数
int count;
month_score_log=0;
month_day_score=0;
count=1;
if(year_log%4==0&&year_log%100!=0||year_log%400==0){//判断是否为闰年
month_score_log=1;
}
month_log=month_log+1; //将传来的月份数加1
switch(month_log){
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
month_day_score=31;
break;
case 4:
case 6:
case 9:
case 11:
month_day_score=30;
break;
case 2:
if(month_score_log==1){
month_day_score=29;
}
else{
month_day_score=28;
}
break;
}
for(int i=7;i<49;i++){ //初始化标签
label[i].setText("");
}
week_log=week_log+6; //将星期数加6,使显示正确
month_day_score=month_day_score+week_log;
for(int i=week_log;i<month_day_score;i++,count++){
label[i].setText(count+"");
}
}
public static void main(String [] args){
JFrame.setDefaultLookAndFeelDecorated(true);
MainFrame start=new MainFrame();
}
}
请教各位,有没有好的方法让jspinner控件显示系统时间时虽系统时间变化来更新显示,我想到过用paint()方法。但好像只支持Graphics g?
import javax.swing.*;
import java.awt.*;
import java.util.*;
import java.text.*;public class tt extends JFrame {
private JLabel tipLabel; private JTextField timeText; private Container container; public tt() {
container = getContentPane();
container.setLayout(new FlowLayout());
tipLabel = new JLabel("当前时间:");
timeText = new JTextField(25);
timeText.setEditable(false);
container.add(tipLabel);
container.add(timeText);
Thread thread = new Display(timeText);
thread.start();
pack();// 自动调整窗体大小
setVisible(true);
setSize(250, 100);
} public static void main(String[] args) {
tt newTime = new tt();
newTime.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}class Display extends Thread {
private JTextField timeField; Display(JTextField field) {
timeField = field;
} DateFormat df = DateFormat.getDateTimeInstance(DateFormat.LONG,
DateFormat.LONG, Locale.CHINA);
{
df.setTimeZone(TimeZone.getTimeZone("GMT+8"));
} public void run() {
while (true) {
Date date = new Date();
timeField.setText(df.format(date));
try {
Thread.sleep(1000);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
上边例子作为参考,则不难实现了。只是需要把textfiled换成JSpinner。希望能举一反三。大家再接再励了。可以结贴了。
Timer timer = new Timer(delay,new ActionListener(){
public void actionPerformed(ActionEvent e){
//在这里做事情。
//比用线程去控制方便。
}
});
看看下面这段代码也许对你有些帮助:
private class showT extends Thread {
public void run() {
while (true) {
String time = new SimpleDateFormat(" HH :mm :ss ")
.format(new Date());
myTimer.getL2().setText(time); //这是将时间交给一个Label标签显示
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
对,并且想只修改数字,年,月,日还有冒号还得要控制,不能删除,我的意思就是桌面右下角的时间和日期属性里的调整时间用java重写。但用到了Spinner控件,说实话用的不是很熟。不知有没有兴趣研究一下。我也是自己做来玩玩
import java.awt.Point;
import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;
import javax.swing.JDialog;
import javax.swing.JFrame;public class Sdialog extends JDialog implements Runnable {
/**
*
*/
private static final long serialVersionUID = 1L;
private String time; public Sdialog() { this.setSize(500, 400);
this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
this.setVisible(true);
this.setLayout(null);
this.setLocation(new Point(300, 500));
} public void run() {
while (this.isShowing()) {
time = DateFormat.getDateTimeInstance(DateFormat.FULL,DateFormat.LONG, Locale.SIMPLIFIED_CHINESE).format(new Date());
this.setTitle(time);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
} public static void main(String[] args) {
new Sdialog().run();
}
}
用线程的话,一定要控制好,
while(true){ Thread.sleep(XXX);
//dosomething;
}这种结构,不设置flag(标志位)的话,很容易在UI资源注销之后,线程仍然在运行。所以一定要设置flag,还有就是,sleep也是必不可少的,如果少了,线程一直占用CPU资源,会使得CPU占用率很高的。