?? swingclock.java
字號:
package com.javapatterns.observertimer.clock;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.DateFormat;
import java.util.Calendar;
import java.util.Date;
import javax.swing.*;
public class SwingClock extends java.applet.Applet
{
private Timer clock = new Timer(1000,
new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
synchronized(SwingClock.this)
{
repaint();
}
}
});
public void init()
{
setBackground(Color.green);
setFont(new Font("TimesRoman", Font.BOLD, 36));
}
public void paint(Graphics g)
{
Calendar cal = Calendar.getInstance();
Date date = cal.getTime();
DateFormat dateFormatter = DateFormat.getTimeInstance();
g.drawString(dateFormatter.format(date), 5, 100);
}
public SwingClock() throws InterruptedException
{
clock.start();
}
}
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -