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JavaGenMUB12.java

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import java.util.HashSet;

import java.util.Set;

public class JavaGenMUB12<T extends HashSet<String> & Set<String>> {

T set;

public JavaGenMUB12(T set) {

this.set = set;

}

public void add(String string) {

set.add(string);

}

public boolean contains(String string) {

return set.contains(string);

}

public static void main(String[] args) {

HashSet<String> set = new HashSet<>();

set.add("one");

set.add("two");

set.add("three");

set.add("four");

set.add("five");

JavaGenMUB12<HashSet<String>> obj = new JavaGenMUB12<>(set);

System.out.println(obj.set);

obj.add("six");

System.out.println(obj.set);

System.out.println(obj.contains("six"));

}