bits | Baeldung

Performance Comparison of boolean[] vs BitSet

Compare BitSets and boolean[] in terms of performance in different scenarios

A Guide to BitSet in Java

Learn how we can use a Java BitSet to represent a vector of bits, gett familiar with the BitSet internals, and take a closer look at its API

Representation of Integers at a Bit Level in Java

Understanding how Java represents integers can help us with certain mathematical operations. In this article, we look at integer representation and how to use bitwise operations with Java numbers.

RGB Representation as an Integer in Java

Learn how to use bitwise operations to move between RGB and integer representations.

Blowfish Encryption Algorithm

Learn how to implement encryption and decryption using Blowfish ciphers with the Java Cryptography Architecture (JCA).

Count the Number of Unique Digits in an Integer using Java

A quick and practical guide to counting unique digits in an Integer using Java.

Testcontainers Desktop

Learn how to use the Testcontainers Desktop application, a simple yet powerful tool for running Testcontainers.

Storing UUID as Base64 String in Java

Learn how to store UUID as Base64 String using different approaches in Java.

Generating Unique Positive Long Using SecureRandom in Java

Learn how to use SecureRandom to generate unique positive values in Java.

Converting BigDecimal to Integer in Java

Learn how to convert Integer to BigDecimal in Java.

Find Missing Number From a Given Array in Java

Learn multiple approaches to finding a single missing number from an array in the integer range [1-N].

UTF-8 Validation in Java

Explore UTF-8 encoded bytes and string conversion and different types of UTF-8 validation based on byte and stream.

Handling NullPointerException in findFirst() When the First Element Is Null

To avoid NullPointerException when using findFirst() in Java, filter the stream before calling findFirst() or use Optional#ofNullable() to wrap values in an Optional object.