++ Confusion in java

Question

++a , a++ what is difference

Answer 1

Devashish kumar ,

here a short description:

=> *pre-increment* operator: ++x
is used to increment the value of variable `x` **before** using it in an expression.

=> *post-increment* operator: x++
is used to increment the value of variable `x` **after** executing the expression.

Answer 2

++a : pre-increment
a++ : post-increment

Answer 3

EXAMPLE - pre-increment
x = 5;
y = ++x; (increment x to 6, then assign 6 to y)

EXAMPLE - post-increment
a = 5;
b = a++; (assign 5 to b, then increment a to 6)

Both cases have the side-effect of incrementing and saving the variable.
Just a question whether you access the value of the variable before or after the increment happens.