Find minimum element of HashSet in Java

To get the minimum element of HashSet, use the Collections.min() method.

Declare the HashSet −

Set<Integer> hs = new HashSet<Integer>();

Now let us add the elements −

hs.add(29);
hs.add(879);
hs.add(88);
hs.add(788);
hs.add(456);

Let us now get the minimum element −

Object obj = Collections.min(hs);

The following is an example to find the minimum element of HashSet −

Example

 Live Demo

import java.util.*;
public class Demo {
   public static void main(String args[]) {
      // create hash set
      Set<Integer> hs = new HashSet<Integer>();
      hs.add(29);
      hs.add(879);
      hs.add(88);
      hs.add(788);
      hs.add(456);
      System.out.println("Elements in set = "+hs);
      // finding minimum element
      Object obj = Collections.min(hs);
      System.out.println("Minimum Element = "+obj);
   }
}

Output

Elements in set = [788, 88, 456, 29, 879]
Minimum Element = 29