Since Java 21, wrapper classes have played an increasingly sophisticated role in Java’s type system. Here’s everything you need to know about updates for virtual threads, pattern matching, and ...

The release introduces the Jakarta Data specification, updates testing frameworks, and aligns with Java 21, the latest long-term support version of Java. The platform now supports Java 17 or higher ...

Here's a quick JDBC with HSQLDB tutorial to get you up and running with Java database connectivity and the popular HyperSQL database.

A look at some of the best database and RDBMS tools for Java software developers. Learn more about Java and database programming.

We cover some of the most popular big data tools for Java developers. Discover the best big data tools and what to look for.

When I upgrade spring-data-mongodb from 3.1.8 to 3.3.5, I encountered below exception: org.springframework.data.mapping.MappingException: Cannot convert [a, b, c] of type class java.util.ArrayList ...

A Java string is a sequence of characters that exists as an object of the class java.lang. Java strings are created and manipulated through the string class. Once created, a string is immutable -- its ...

Researchers warn of critical Java flaw impacting the console of the H2 Java SQL database. Users are advised to update their H2 database to mitigate remote code execution risk.

This post shows readers how to create an array in Java. Including: Array Lists, multidimensional arrays, maps, and more.