org.locomotive.util
Class LowNumberKeeper
java.lang.Object
|
+--org.locomotive.util.LowNumberKeeper
- public class LowNumberKeeper
- extends java.lang.Object
manages a pool of numbers. Marks numbers that are used and will not
give them out again until they are marked as free. Getting a new
number will always give you the lowest available in the set.
Constructor Summary |
LowNumberKeeper(int fst,
int max)
creates a new keeper. |
Method Summary |
void |
freeNumber(int val)
Returns the number back to the pool so that others may use it. |
int |
getNextNumber()
gets the next available number in the sequence. |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
LowNumberKeeper
public LowNumberKeeper(int fst,
int max)
throws java.lang.IllegalArgumentException
- creates a new keeper. max - first + 1 gives the size of the
pool
- Parameters:
first
- - the first number in the series that is available
getNextNumber
public int getNextNumber()
throws java.lang.ArrayIndexOutOfBoundsException
- gets the next available number in the sequence.
- Throws:
- java.lang.ArrayIndexOutOfBoundsException - if no numbers are available
freeNumber
public void freeNumber(int val)
- Returns the number back to the pool so that others may use it.
- Parameters:
val
- the value to be made available in the pool