Does it make a difference if I declare variables inside or outside a loop in Java?
- by Puckl
Does it make a difference if I declare variables inside or outside a loop in Java?
Is this
for(int i = 0; i < 1000; i++) {
int temporaryValue = someMethod();
list.add(temporaryValue)
}
equal to this (with respect to memory usage)?
int temporaryValue = 0;
for(int i = 0; i < 1000; i++) {
temporaryValue = someMethod();
list.add(temporaryValue)
}
And what if the temporary variable is for example an ArrayList?
for(int i = 0; i < 1000; i++) {
ArrayList<Integer> array = new ArrayList<Integer>();
fillArray(array);
// do something with the array
}
