Question

java 通过查询Timer类的方法，解决以下问题：

当程序运行时，如果是每月的最后一天的下午5点，就自动调用某个任务。

Answer 1

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Timer;
import java.util.Calendar;
import java.util.Date;
public class SwingTimerDemo{

static boolean bStop = false;

void init(){

int delay = 10000; //milliseconds, 10seconds
ActionListener taskPerformer = new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Calendar calendar1 = Calendar.getInstance();
calendar1.set(Calendar.DATE, calendar1.getActualMaximum(Calendar.DATE));
int month1 = calendar1.get(Calendar.DAY_OF_MONTH);

Calendar calendar2 = Calendar.getInstance();
calendar2.setTime(new Date());
int month2 = calendar2.get(Calendar.DAY_OF_MONTH);
int hour2 = calendar2.get(Calendar.HOUR_OF_DAY);
if(month1==month2 && hour2==17){
doSomething();
}
}
};
new Timer(delay, taskPerformer).start();
}

void doSomething(){
System.out.println("Timer .............");
}

public static void main(String argv[])throws Exception{
new SwingTimerDemo().init();
System.out.println("Timer started .............");
while(!bStop){
Thread.sleep(1000);
}
}

}

请参考，完整代码。