How to call multiple methods using loop in Java?

Question

Supposes I have some methods like this:

method1()
method2()
method3()
method4()
method5()

But I don't want to call sequence methods:

obj.method1()
obj.method2()
obj.method3()
obj.method4()
obj.method5()

It's boring. And if I add a new method: method6(), I need add manual: obj.method6()

It's better if I can call them using a loop in Java. Anybody can give me some suggestions?

Thank!

.

Before you do this, consider whether the methods could be better named, and whether it would be simplest just to write one method that calls them all. — Andy Thomas
– Andy Thomas, Commented Sep 24, 2012 at 13:44
Would it not be better to add a method to your obj to call the method sequence? (I assume those are the real method names.) — Tom Hawtin - tackline
– Tom Hawtin - tackline, Commented Sep 24, 2012 at 13:48

gnomie · Accepted Answer · 2012-09-24 13:37:04Z

3

Try something like:

   for (int i=0;i<N;i++) {
      try {
        obj.getClass().getMethod("method"+i).invoke(obj);
      } catch (Exception e) {
         // give up
         break;
      }
    }

answered Sep 24, 2012 at 13:37

gnomie

4416 silver badges16 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Marko Topolnik · Accepted Answer · 2012-09-24 13:37:00Z

2

public static void callABunchOfMethods(Object obj, int count) throws Exception {
  for (int i = 1; i <= count; i++)
    obj.getClass().getMethod("method"+i).invoke(obj);
}

answered Sep 24, 2012 at 13:37

Marko Topolnik

201k31 gold badges336 silver badges455 bronze badges

Comments

Damian Leszczyński - Vash · Accepted Answer · 2012-09-24 13:53:00Z

1

I do not know why you have used such naming convetion for your methods. If it was not only for example, you should consider to find better solution for them. Today it could be obvious for you but for followers of your code not really.

Regarding the manual addition of hypothetical method6. I think that adding one line of code is betther than reducing it and lossing the clarity of the code.

My suggestion is that, you should use the Facade pattern

edited Sep 24, 2012 at 13:53

answered Sep 24, 2012 at 13:38

Damian Leszczyński - Vash

31k9 gold badges64 silver badges95 bronze badges

Collectives™ on Stack Overflow

How to call multiple methods using loop in Java?

3 Answers 3

Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related