java.util.Vector
, java.util.Hashtable
and java.util.Stack
.
Usages of these classes can often be replaced with usages of
java.util.ArrayList
, java.util.HashMap
and java.util.ArrayDeque
respectively.
While still supported,
the former classes were made obsolete by the JDK1.2 collection classes, and should probably
not be used in new development.
Use the Ignore obsolete collection types where they are required option to ignore any cases where the obsolete collections are used as method arguments or assigned to a variable that requires the obsolete type. Enabling this option may consume significant processor resources.