Tutorials
How to Use Java Records to Model Immutable Data
With the introduction of Java Records (previewed in Java 14 and standardized in Java 16), developers now have a concise ...
Throwing and Catching Exceptions Tutorial
An exception in Java is an unexpected event that occurs during the execution of a program, disrupting the normal flow ...
Java Method Handles Tutorial
Below is a tutorial on Java Method Handles—what they are, why they exist, and how to use them. We will ...
Understanding Java Method Handles
Background and Motivation Reflection in Java has traditionally been the go-to mechanism for dynamic invocation of methods, field access, or ...
How to Join a List of Lists in Python
Joining a list of lists in Python is a common task, and choosing the right method can improve efficiency and readability. This guide explores different approaches, including list comprehension, itertools.chain(), sum(), and more, highlighting their performance and best use cases.
How to Convert Between Byte Array and UUID in Java
In Java, working with Universally Unique Identifiers (UUIDs) often involves serialization and deserialization. One common requirement is to convert a ...
How to Validate UUID Strings in Java
Universally Unique Identifiers (UUIDs) are widely used in applications for uniquely identifying entities such as database records, transactions, and distributed ...
How to Use UUID in Java
Universally Unique Identifiers (UUIDs) are widely used in software development for generating unique identifiers. In Java, UUIDs are primarily used ...
How to Install Java 23 on Debian-Based Systems (Ubuntu, Linux Mint, Debian & More)
If you’re using a Debian-based system (such as Debian 10, 11, or 12 or Ubuntu 22.04 or 24.04) and need ...
How to Set Up SSH Keys on Ubuntu 24.04
Secure Shell (SSH) keys provide a more secure and convenient way to access remote systems compared to traditional password-based authentication. ...
