how to constrain a collection so it takes only strings
2  1558  Ganon11 3,652
Recognized Expert Specialist
I think as of Java5 or Java6, you can declare an ArrayList with a class or data type inside <> brackets, like: - ArrayList<String> myStringList = new ArrayList<String>();
and this will restrict myStringList to holding Strings.
I think as of Java5 or Java6, you can declare an ArrayList with a class or data type inside <> brackets, like:
- ArrayList<String> myStringList = new ArrayList<String>();
and this will restrict myStringList to holding Strings.
Yes that is correct. Without using 1.5 you'd have to write yuor own ArrayList class and put the restriction on the add method.
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