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

1 vote145 views1 answer
String array to stream
Java
2 votes136 views1 answer
How can I put a parameter into a localized string in Android?
Java
0 vote141 views1 answer
How to disable special characters on keyboard in android
Java
0 vote147 views1 answer
Type 'Response<any, Record<string, any>>' does not satisfy the constraint 'ServerResponse'. Types of property 'req' are incompatible.
Java
1 vote131 views1 answer
Java stream collect to string
Java
1 vote136 views1 answer
Java, how to compare Strings with String Arrays
Java
0 vote167 views1 answer
How to pass path parameter in url in spring rest
Java Spring
1 vote135 views2 answers
Array erstellen java
Java
0 vote152 views2 answers
Hulu
Java
2 votes141 views10 answers
Javascript
Java