Calling getters on an object vs. storing it as a local variable (memory footprint, performance)

Question

In the following piece of code we make a call listType.getDescription() twice:

for (ListType listType: this.listTypeManager.getSelectableListTyp         


        

Answer 1

I agree on everything. About the readability I'd like to add something: I see lots of programmers doing things like:

if (item.getFirst().getSecond().getThird().getForth() == 1 ||

item.getFirst().getSecond().getThird().getForth() == 2 ||

item.getFirst().getSecond().getThird().getForth() == 3)

Or even worse:

item.getFirst().getSecond().getThird().setForth(item2.getFirst().getSecond().getThird().getForth())

If you are calling the same chain of 10 getters several times, please, use an intermediate variable. It's just much easier to read and debug