In Java, the operation to decrease the value of a variable by one is usually performed using the decrement operator --. It decreases the current value of the variable by 1.

There are two forms:

Postfix decrement: i-- — first returns the current value, then decreases.
Prefix decrement: --i — first decreases the value, then returns.

Example:

int i = 5;
System.out.println(i--); // Will print 5, then i becomes 4
System.out.println(--i); // First i becomes 3, then prints 3

Eelmine Edasi