Please tell me the difference?(Related to incrementation)

Question

++x and x++

What's the difference and where they are helpful.

Please and Thanks

Answer 1

++x is Pre increment meaning, increment is done first. For example,
y = ++x
means x = x + 1 and y = x.
If x is 1 initially, y becomes 2.

x++ is Post increment meaning, increment is done last. For example,
y = x++
means y = x and x = x + 1.
If x is 1 initially, y becomes 1.

Answer 2

quick example

pre increment means value is incremented prior to being used, post increment means value is incremented after it was used

int i = 1;
System.out.println (++i); // i is now 2. prints 2

vs

int i = 1;
System.out.println (i++); // prints 1, but i is now 2

Answer 3

Thanks