import java.util.*;
import java.io.*;public class TimerUse {
public static void main(String[] args) {
PickTask pt = new PickTask();
pt.start(1, 3);
}
}class PickTask {
private Timer timer; private static int count = 0; public PickTask() {
timer = new Timer();
} private TimerTask task = new TimerTask() {
public void run() { try {
BufferedReader br = new BufferedReader(new FileReader(
"c:\\s.txt"));
String data = null;
while ((data = br.readLine()) != null) {
System.out.println(data);
}
count++;
System.out.println("\n完成第" + count + "次");
} catch (FileNotFoundException e) {
System.out.println("can not find the file");
} catch (IOException e) {
e.printStackTrace();
}
}
}; public void start(int delay, int internal) {
timer.schedule(task, delay * 1000, internal * 5000);
}}
import java.io.*;public class TimerUse {
public static void main(String[] args) {
PickTask pt = new PickTask();
pt.start(1, 3);
}
}class PickTask {
private Timer timer; private static int count = 0; public PickTask() {
timer = new Timer();
} private TimerTask task = new TimerTask() {
public void run() { try {
BufferedReader br = new BufferedReader(new FileReader(
"c:\\s.txt"));
String data = null;
while ((data = br.readLine()) != null) {
System.out.println(data);
}
count++;
System.out.println("\n完成第" + count + "次");
} catch (FileNotFoundException e) {
System.out.println("can not find the file");
} catch (IOException e) {
e.printStackTrace();
}
}
}; public void start(int delay, int internal) {
timer.schedule(task, delay * 1000, internal * 5000);
}}
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public void init() throws ServletException {
System.out.println("start!!!!");
PickTask pt = new PickTask();
pt.start(1, 3);
}
<servlet-name>servlet name</servlet-name>
<servlet-class>your servlet class name</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
注意:不要给这个servlet加servlet-mapping,以防止通过浏览器访问