Returns true if this collection contains the specified element. More formally, returns true if and only if this collection contains at least one element e such that (o==null ? e==null : o.equals(e)).
o | element whose presence in this collection is to be tested |
ClassCastException | if the type of the specified element is incompatible with this collection (optional) | |
NullPointerException | if the specified element is null and this collection does not permit null elements (optional) |
Diagram: Collection List