Remove specified element from Java HashSet : HashSet « Collections Data Structure « Java

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Java » Collections Data Structure » HashSet

Remove specified element from 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);



    boolean blnRemoved = hSet.remove(new Integer("2"));



    System.out.println(blnRemoved);



    System.out.println(hSet);



  }



}

/*

[1, 2, 3]

true

[1, 3]

*/

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13.	Iterate through elements of Java HashSet
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15.	Listing the Elements of a Collection(iterate over the elements of set or list)
16.	Remove all elements from Java HashSet
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18.	Implements a HashSet where the objects given are stored in weak references
19.	Convert an ArrayList to HashSet
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23.	A memory-efficient hash set.

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