java Step $1$: Inspect StaticSet.java

Inspect the StaticSet generic class declaration in the StaticSet.java file. Access StaticSet.java by clicking on the orange arrow next to LabProgram.java at the top of the coding window. StaticSet uses a HashSet to implement a static set. The HashSet's contents are assigned at construction time and must not change after.

Constructors and some additional methods are already implemented:

contains$($T item$)$ uses the HashSet's contains$()$ method to determine if the set contains the item. If contains$()$ returns true, the item is in the set. Otherwise the item is not in the set and contains$()$ returns false.

getSize$()$ uses the HashSet's size$()$ method to determine the number of elements in the set. getSize$()$ returns the set's size.

Step $2$: Implement StaticSet's union$(),$ int