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

Hashset in java

- HashSet can have null, order is not guaranteed

-2

Similar codes

0 vote192 views1 answer
Spring aop xml definition
Java Spring
0 vote154 views1 answer
Distance point to line java
Java
0 vote153 views2 answers
React-native force light mode
Java
0 vote153 views1 answer
Reading string after double in java
Java
0 vote146 views1 answer
Sibling search java program
Java
0 vote179 views1 answer
What Is Spring Boot and What Are Its Main Features?
Java
0 vote146 views1 answer
Password = sdf345 password.isalpha() java
Java
0 vote141 views1 answer
Bigint is built in object
Java
0 vote159 views1 answer
Class BuildConfig is public, should be declared in a file named BuildConfig.java
Java
-2 votes245 views1 answer
Java return exception
Java