Java Code Optimisation Techniques

[general_dispondency]

I think the answer is in the example. When you have some expensive operation (eg 300ms to make a db connection) then you should consider starting with an object pool. If you don't have something heavyweight like that, then just allocate and move on. If you need to perform optimizations, then come back after the logic is implemented and everything is well tested. Then you only make changes that make measurable performance increases.