Optional.map vs Optional.flatMap – Difference and Similarities
What is Optional? Java 8 has introduced a new class in utils package Optional. This class main purpose is for handling NullPointerExceptions. So what exactly is Optional? As per the…
What is Optional? Java 8 has introduced a new class in utils package Optional. This class main purpose is for handling NullPointerExceptions. So what exactly is Optional? As per the…
Optional with Examples in Java 8 Java 8 has introduced a new class in utils package Optional. This class main purpose is for handling NullPointerExceptions. So what exactly is Optional?…
Java 8 Streams – Streams in Java With Examples What are Streams? Sequence of objects supporting multiple methods. Features: Stream is not a data structure and does not store elements.…
What happens if we do not override hashcode() and equals() in hashmap? In this post, let us understand what is the use of equals() and hashcode(), why it is important…
How does hashmap work Internally – Explained: In this post, let us see how hashmap works internally – How the elements are added and retrieved from buckets. Features of HashMap:…