What Is the Difference Between Pre Increment and Post Increment in Java

2 Answers. PRE-increment is used when you want to use the incremented value of the variable in that expression., whereas POST-increment uses the original value before incrementing it.

What is difference between pre increment and post increment?

‘Post’ means after – that is, the increment is done after the variable is read. ‘Pre’ means before – so the variable value is incremented first, then used in the expression. “the increment is done after the variable is read”.

What is the difference between pre and post increment and decrement?

In the Pre-Increment, value is first incremented and then used inside the expression. Whereas in the Post-Increment, value is first used inside the expression and then incremented. Decrement Operators: The decrement operator is used to decrement the value of a variable in an expression.