taskbean.java

J2EE独立开发制作

package test.barBean;
import java.io.Serializable;
public class TaskBean implements Runnable, Serializable {
    private int counter;
    private int sum;
    private boolean started;
    private boolean running;
    private int sleep;
public TaskBean() 
    {
        counter = 0;
        sum     = 0;
        started = false;
        running = false;
        sleep   = 100;
    }
    protected void work() 
{
    try {
        Thread.sleep(sleep);
        counter++;
        sum += counter;
    } catch (InterruptedException e) {
        setRunning(false);
    }
}
public synchronized int getPercent() {
    return counter;
}
public synchronized boolean isStarted() {
    return started;
}
public synchronized boolean isCompleted() {
    return counter == 100;
}
public synchronized boolean isRunning() {
    return running;
}
public synchronized void setRunning(boolean running) {
    this.running = running;
    if (running)
        started  = true;
}
public synchronized Object getResult() {
    if (isCompleted())
        return new Integer(sum);
    else
        return null;
}
public void run() {
    try {
        setRunning(true);
        while (isRunning() && !isCompleted())
            work();
    } finally {
        setRunning(false);
    }
}






}