What is hashset in java

Hashset java

// Java program to demonstrate working of HashSet
import java.util.*;
  
class HashSetDemo {
  
    // Main Method
    public static void main(String[] args)
    {
        HashSet<String> h = new HashSet<String>();
  
        // Adding elements into HashSet usind add()
        h.add("India");
        h.add("Australia");
        h.add("South Africa");
        h.add("India"); // adding duplicate elements
  
        // Displaying the HashSet
        System.out.println(h);
        System.out.println("List contains India or not:"
                           + h.contains("India"));
  
        // Removing items from HashSet using remove()
        h.remove("Australia");
        System.out.println("List after removing Australia:"
                           + h);
  
        // Iterating over hash set items
        System.out.println("Iterating over list:");
        Iterator<String> i = h.iterator();
        while (i.hasNext())
            System.out.println(i.next());
    }
}

Source: geeksforgeeks.org

What is hashset in java

- HashSet can have null, order is not guaranteed

-2

Similar codes

0 vote177 views1 answer
How to access private vairable in java method
Java
0 vote158 views3 answers
Cant change button color when app run android studio
Java
1 vote213 views1 answer
Online java code fixer
Java
1 vote169 views1 answer
Initialize hashset with values java 9
Java
1 vote160 views1 answer
How to maximize a web page
Java
1 vote184 views1 answer
File to multipartfile in java
Java
0 vote179 views1 answer
Android studio change image on button click
Java
0 vote176 views2 answers
How to turna date into a LocalDateTime java
Java
0 vote170 views2 answers
How-to-use-volley-string-request-in-android
Java
0 vote172 views1 answer
Priority scheduling in java
Java