Check if a particular element exists in Java HashSet : HashSet « Collections Data Structure « Java

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Java » Collections Data Structure » HashSet

Check if a particular element exists in Java HashSet


   



import java.util.HashSet;



public class Main {

  public static void main(String[] args) {

    HashSet<Integer> hSet = new HashSet<Integer>();



    hSet.add(new Integer("1"));

    hSet.add(new Integer("2"));

    hSet.add(new Integer("3"));



    System.out.println(hSet.contains(new Integer("3")));

  }

}

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6.	Find maximum element of Java HashSet
7.	Find Minimum element of Java HashSet
8.	Get Enumeration over Java HashSet
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10.	Copy all elements of Java HashSet to an Object Array
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14.	Listing the Elements of a Collection(iterate over the elements of set or list)
15.	Remove specified element from Java HashSet
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17.	Convert array to Set
18.	Implements a HashSet where the objects given are stored in weak references
19.	Convert an ArrayList to HashSet
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22.	Convert Set into array
23.	A memory-efficient hash set.

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