Regarding usage of generics in java

Question

While learning spring batch, I encountered a line as below:

stepBuilderFactory.get("step1").<Integer, Integer>chunk(3).reader(new MyReader)..

Normally, in generics, we will have class name followed by <> . Example List<Integer> But what does .<Integer, Integer>chunk(3) mean?

Answer 1

It means that the chunk method is generic instead of the type that get returns.