creating final variables inside a loop

Question

is this allowed in java:

for(int i=0;i<5;i++){
  final int myFinalVariable = i;
}

The keyword of my question is final. Is i

Answer 1

As answered, Yes, you may indeed mark the variables in a loop as 'final'. Here is the effect of doing so (Java 7, Eclipse Indigo, Mac OS X Lion).

for ( int i = 0; i < 5; i++ ) {

  // With 'final' you cannot assign a new value.
  final int myFinalVariable = i;  // Gets 0, 1, 2, 3, or 4 on each iteration.
  myFinalVariable = 7; // Compiler error: The final local variable myFinalVariable cannot be assigned.

  // Without 'final' you can assign a new value.
  int myNotFinalVariable = i;  // Gets 0, 1, 2, 3, or 4 on each iteration.
  myNotFinalVariable = 7; // Compiler is OK with re-assignment of variable's value.

}