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Implementing HashSet Class


\begin{lstlisting} import java.util.Set; import java.util.HashSet; \par class Ma... ....addAll(set1); System.out.println(''Union is: '' + set2); } } \end{lstlisting}

Output


\begin{lstlisting} Set1 : [2 , 3] Set2 : [1 , 2] Union is : [1 , 2 , 3] \end{lstlisting}