Thrown to indicate that an index of some sort (such as to an array, to a string, or to a vector) is out of range. Applications can subclass this class to indicate similar exceptions.
Thrown if trying to access an index which is out of bounds on objects like String, Array, or Vector. Any negative integer less than or equal to -1 and positive integer greater than or equal to the size of the object is an index which would be out of bounds
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0at java.util.ArrayList.rangeCheck(ArrayList.java:635)at java.util.ArrayList.get(ArrayList.java:411)at org.primefaces.component.picklist.PickList.validate(PickList.java:432)