Question

How to find the minimum element of HashSet in Java

Answer 1

package javaapplication1;

import java.util.Collections;
import java.util.HashSet;

public class JavaApplication1 {

    public static void main(String[] args) {

        HashSet hashSet = new HashSet();

        hashSet.add(new Long("984772342"));
        hashSet.add(new Long("894736632"));
        hashSet.add(new Long("27346628349"));
        hashSet.add(new Long("984738774234"));
        hashSet.add(new Long("893489323233"));

        Object o = Collections.min(hashSet);

        System.out.println(o);
  }
}
  
/*
run:

894736632

*/

 

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