Efficiency of Java code with primitive types

Question

I want to ask which piece of code is more efficient in Java? Code 1:

void f()
{
 for(int i = 0 ; i < 99999;i++)
 {
  for(int j = 0 ; j < 99999;j++)
  {         


        

Answer 1

No, It does not make a difference at all (speed wise). They both get compiled into the same code. And there's no allocation and deallocation going on like MasterGaurav said.

When the method starts, the JVM allocates enough memory slots for all local variables, and no more allocations occurs until the end of the method.

The only small tiny insignificant difference (other than the scope), is that with the first example, the memory allocated for i & j can be reused for other variables. Therefore, the JVM will allocates fewer memory slots for this method (well, yous saved some bits)