Question

x = 2; 
y = x++; 
System.out.println(y)

If x is incremented after, would y print out 2 or will it print out 3 and why?
If this was prefixed, would it print out just the 3?

Answer 1

Since the plus signs is after the variable it called a post-increment. If the was before the variable it would be called a pre-increment. With pre-increments y would be assigned x+1. where as with the post-increment y would be assigned x then x would increment by one and there after be 3 but y would be 2.

x = 2;
y = x++;

with that y would be 2 and x would be 3.

x = 2;
y = ++x;

with that x,y would both be 3.