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2 votes
3 answers
205 views

Data duplication, can it be an unavoidable practice in this example?

Say I have different employees of type Employee stored in a list inside a class SubCase. public class SubCase{ protected ArrayList<Employee> employees; ... } SubCase represents a part ...
38 votes
5 answers
9k views

When should I extend a Java Swing class?

My current understanding of Inheritance implementation is that one should only extend a class if an IS-A relation is present. If the parent class can further have more specific child types with ...