Learn two different ways to convert time from the 12-hour time format to the 24-hour time format in Java.

A quick but comprehensive explanation of why there's no SortedList in Java.

A quick and practical guide to HashMap with multiple values per key.

Discover the differences between the String.valueOf() and Object.toString() methods.

Learn different approaches to convert a Java String ArrayList to a String array through examples.

A quick and practical guide to sorting Java Map in descending order.

A quick and practical guide to Avaje Inject.

Learn how the Holder class can serve as a flexible and powerful tool for various programming scenarios in Java.

A quick and practical guide to converting List to Long[] Array in Java.

Learn multiple ways to check whether a Java String is valid JSON.

Use the Guava CharMatcher to work with Strings - remove special chars, validate, trim, collapse, replace and count among other super useful APIs.

Learn how to find the longest words in a sentence.

Learn how we to easily create permutations in Java using third-party libraries.

A quick and practical guide to checking if a String has all unique characters in Java.

Learn about different ways of checking for empty Strings in Java

Quick intro to working with Strings with the Apache Commons library and StringUtils.

The semantic kernel in Java, GC improvements in Java 21, sealed classes, project Leyden, async-profiler, and GenAI code assistance!

A quick and practical guide to converting epoch time to LocalDate and LocalDateTime in Java.

Learn the steps to retrieve the first n elements from a List and convert them into an array in Java.

Explore subclasses, inner classes, and their role in writing modular object-oriented code.

Explore how to obtain the key and value lists from a HashMap in Java.