Master the art of data filtering with Java 8 Predicates. Learn optimization techniques, advanced usage, and real-world examples

A quick tutorial on converting Java arrays to strings without the usual brackets and commas.

Learn how to use the @ExtensionMethod annotation in Lombok to enhance the functionality of existing classes without modifying their source code.

Learn how the JVM works and how to tune the available parameters.

Explore how to leverage SimpleEntry to create pairs of adjacent elements and learn how stateful transformations can provide a flexible approach to managing and processing data streams.

Learn the best practices usign Class.cast() and cast Operator in Java.

Learn how to populate an array with random numbers.

Explore the difference between the null value and empty arrays in Java.

Explore how to convert a PostgreSQL array from a ResultSet to an array of strings in Java.

We may wish to convert the contents of an Excel sheet into a different format to make it easier to process. Learn how to read Excel documents and then output them as CSV.

Learn how to effectively convert a 2D array to a stream of rows or a flat stream, and then reassemble them back into a 2D array.

Learn how to check if all the elements of an array are equal in Java.

Learn how to generate a random hexadecimal value in Java.

Explore the benefits of Streams API in sorting elements in a List stored within a Map.

Learn about various strip methods introduced in Java 11 and 13 within the String class, including strip(), stripLeading(), stripTrailing(), and stripIndent().

Learn how to get date and time from a datetime string in Java.

Learn about how to compute sums of the main and secondary diagonals in a two-dimensional array in Java.

Explore three methods to convert a Gson JsonArray to a HashMap in Java.

Learn how to extract the suffix of a String after the last occurence of a pattern in Java.

Learn how to convert between org.joda.time.DateTime and java.sql.Timestamp classes in Java.