hashset in java contains code example

Example 1: hashset contains java

HashSet<Integer> set = new HashSet<Integer>();      
set.contains(110)//public boolean contains(Object o)

Example 2: set contains in java

public class HashSetDemo {
   public static void main(String args[]) {
      
      // create hash set
      HashSet <String> newset = new HashSet <String>();

      // populate hash set
      newset.add("Learning"); 
      newset.add("Easy");
      newset.add("Simply");  

      // check the existence of element
      boolean exist = newset.contains("Simply");

      System.out.println("Is the element 'Simply' exists: "+ exist);
   }    
}