Learn about mutable Strings and ways of mutating a String.

Learn various methods for retrieving the first and last key-value pairs from a LinkedHashMap

Explore ways of transforming a stream into a Map or Multimap in Java using various approaches and libraries.

Learn about the Vector class and explore some of its most common operations and methods.

Learn how to round the date using the java.util.Date, as well as LocalDateTime and ZonedDateTime.

Learn various ways to locate the n-th occurrence of a substring within a string using iterative, recursive, and regex-based solutions.

In this tutorial, we learn how to iterate over the characters of a String in Java.

Learn how to obtain the first date of the current month in Java using JDK classes and third-party libraries like Joda Time.

Learn how to check if a Java string contains only Unicode letters.

Learn how to compare two StringBuilder objects in Java releases before and after Java 11.

Explore best practices for using the @param tag to document generic type parameters.

Discover the common mistakes made while modifying the elements in a Java Stream and the correct way to do it.

Learn how to convert a file into a byte array in Java.

In this article we present a collection of top 40 Java 8 interview questions along with in-depth answers

Explore three methods for writing to and reading from a file with HashMap data.

Explore how to get every N-th element from finite and infinite streams in Java.

Last few days of Black Friday. Cascading deletes with Hibernate, Spring 6.1, String Templates, Ktor, error handling, and test data generation. A good week :)

Learn how to retrieve the first non-null value in a collection of item, or sequence of method calls.

Explore various approaches and best practices for determining if an object's type is an enum.

Delve into the distinctions between isEmpty() and isBlank() when working with Java Strings.

Learn different ways to parse XML into a HashMap, a data structure that allows for efficient data retrieval and manipulation.