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This is really a stupid question

i++ , ++i are equal when they are the single statement of code in a line
i mean
i++;or
++i;

But they will create a difference when used in an expression like below

++i is better in following condition

sum = ++i + (i++) + (i++);
sum = ++i + (++i) + (++i);

when you have such type of expression it(post increment) makes things complex as such things will depend on compiler.

if you want straight forward logic i = i+1, ++i would be more useful.
because if you see two expression written above, i++ would makes result different because post increment will not make i = i+1 in the same line but next

++i is better. It doesn't need a copy c-or.

int j = 1;
int i = j++;
System.out.println(i);

output: 1

post-increment returns the current value and then increments it.

Are you mad?
Both are important and have their own values in programming.

so exactly what is the best one

i think we cannot say that one is better than other, it depend on requirement in programming

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