Java-是否可以使用递归或任何其他方法简化此代码？

Question

So I have this method, roosterID is for generating an ID based on the current year and week of year, this is what I've come up with, but I don't think this is the best way to do it, I tried making the method recursive at some point. That didn't work the way I wanted it to. At least, the way I tried it. Basically say there's a year that has 53 weeks, I'm calling the load method of rDAO, with the roosterID for the current week, and the 2 coming weeks. Basically I want the roosterID to be 20141 for the week after 201353, simply using roosterID+1 would make it 201354. I hope my explanation isn't to rubbish.

the code below works, I just think it's kind of dirty and unprofessional, and can be done a lot better, if anything changes I have to redo pretty much all the code, so i'd like some advice.

    public void getWeekTabs(){
    gc.setFirstDayOfWeek(Calendar.MONDAY);
    if(gc.get(Calendar.WEEK_OF_YEAR) <= gc.getWeeksInWeekYear()-2){
        roosterID = Integer.parseInt(Integer.toString(gc.get(Calendar.YEAR)) + Integer.toString(gc.get(Calendar.WEEK_OF_YEAR)));
        rDAO.load(roosterID);
        rDAO.load(roosterID +1);
        rDAO.load(roosterID +2);
    }else if(gc.get(Calendar.WEEK_OF_YEAR) == gc.getWeeksInWeekYear()-1){
        roosterIDtemp = Integer.parseInt(Integer.toString(gc.get(Calendar.YEAR) +1 ) + Integer.toString(1));
        rDAO.load(roosterID);
        rDAO.load(roosterID +1);
        rDAO.load(roosterIDtemp);
    }else if(gc.get(Calendar.WEEK_OF_YEAR) == gc.getWeeksInWeekYear()){
        roosterIDtemp = Integer.parseInt(Integer.toString(gc.get(Calendar.YEAR) +1 ) + Integer.toString(1));
        rDAO.load(roosterID);
        rDAO.load(roosterIDtemp);
        rDAO.load(roosterIDtemp +1);
    }       
}

Answer 1

First of all, this is weird:

roosterID = Integer.parseInt(Integer.toString(gc.get(Calendar.YEAR)) + Integer.toString(gc.get(Calendar.WEEK_OF_YEAR)));

Do this:

public String makeRoosterId(Calendar gc) {
    return String.format("%d%d", gc.get(Calendar.YEAR), gc.get(Calendar.WEEK_OF_YEAR));
}

If you want 201401 instead of 20141, you can modify the format expression to do that. Now, to load your three items:

Calendar c = Calendar.getInstance(); // current date
rDAO.load(makeRoosterId(c));         // Load this week
c.add(Calendar.WEEK_OF_YEAR, 1);
rDAO.load(makeRoosterId(c));         // Load next week
c.add(Calendar.WEEK_OF_YEAR, 1);
rDAO.load(makeRoosterId(c));         // Load the week after that

That should do it.

EDIT : See comments about issues that happen at year boundaries.