有关定时删除文件的例子

例子 1 import javax swing import java awt import java awt event public class java public static void main String args new MouseWindow class MouseWindow extends JFrame implements MouseListener JButton button JTextArea textArea MouseWindow setLayout new FlowLayout addMouseListener this button new JButton 鼠标事件按钮 button addMouseListener this textArea new JTextArea 16 36 add button add new JScrollPane textArea setBounds 200 200 700 560 setVisible true validate setDefaultCloseOperation JFrame EXIT ON CLOSE public void mousePressed MouseEvent e textArea append n 鼠标按下 位置 e getX e getY public void mouseReleased MouseEvent e if e getSource button textArea append n 在按钮上鼠标松开 位置 e getX e getY public void mouseEntered MouseEvent e if e getSource button textArea append n 鼠标进入按钮 位置 e getX e getY public void mouseExited MouseEvent e if e getSource button textArea append n 鼠标离开按钮 位置 e getX e getY public void mouseClicked MouseEvent e if e getModifiers InputEvent BUTTON3 MASK 例子 2 import java io File import java util Calendar import java util Date import java util Timer import java util TimerTask public class java extends TimerTask private static final String targetPath1 C Program Files Tencent QQ image private static final String targetPath2 C Program Files Tencent QQ QQPhoto private Timer timer new Timer private Calendar calendar Calendar getInstance public static void main String args java fm new java fm start private static void delFiles String dir for int i 0 i dir length i File f new File dir i File files null if f exists files f listFiles for int j 0 j files length j files j delete public void start 每隔 5 分钟删除一次 timer scheduleAtFixedRate this new Date 1000 300 public void run delFiles new String targetPath1 targetPath2 下班之前停止任务 if calendar get Calendar HOUR OF DAY 17 例子 3 import java util import java text import java lang Thread import java io File import javax swing public class java implements Runnable Thread t new Thread this private static String s1 用来得到当前时间 public java t start 线程开始 public void run System out println 线程启动 while true SimpleDateFormat sd new SimpleDateFormat HH mm s1 sd format new Date try t sleep 1000 catch Exception e e printStackTrace if s1 equals 24 00 设定删除文件的时间 System out println 时间到 执行删除 del break continue public void del File file new File d File txt if file exists file delete System out println 删除成功 else System out println 文件不存在 System exit 0 public static void main String as new java 例子 4 import java util import java text import java lang Thread import java io File import javax swing import java util Date import java util Timer import java util TimerTask public class java extends TimerTask Thread t new Thread this private static String s1 用来得到当前时间 public java t start 线程开始 public void run System out println 线程启动 while true SimpleDateFormat sd new SimpleDateFormat HH mm s1 sd format new Date try if s1 equals 20 55 设定删除文件的时间 System out println 时间到 执行删除 del break catch Exception e e printStackTrace public void del File file new File d File txt if file exists file delete System o