The daily ledger

Java 27 in IntelliJ IDEA

In line with the six-month release cadence, Java 27 was released on September 15, 2026. In this blog post, we will look at what’s included in this release, how IntelliJ IDEA continues to support the latest Java…

This Week in Spring - September 15th, 2026

Hi, Spring fans! Welcome to another rip-roarin' installment of This Week in Spring! I'm writing this to you from sun-kissed San Francisco, CA, sipping some coffee and watching the bay from my breakfast nook. What a…

Parser Combinators vs. Parser Generators: Why Tooling Keeps Choosing the Former

A grammar file and a build step, or a handful of composable functions. The industry’s answer has been drifting for a decade. For most of programming history, writing a parser meant learning a separate tool. You wrote a…

How to Use Subqueries in SQL

Subqueries are advanced features in SQL for solving problems that require more than a single level of filtering, comparison, or aggregation. A subquery allows one SQL statement to use the result of another SQL statement…

Can You Explain the Diff Your AI Agent Just Wrote?

Every Java developer has been in a code review where the question is simple: "What does this method do?" The answer used to tell you something. The developer who wrote it would describe the intent, the edge cases, the…

How I Built an AI Assistant for My Career with Java, Spring AI, and MongoDB

The best way to learn a technology is by putting it into practice in a real system. A few months ago, I decided to build a virtual assistant that could answer questions about my career, help people learn more about ...…

Java Compact Source Files: No Class, No Static Main

Java has traditionally required a class and a static main method even for the smallest programs. Java 25 changes this with compact source files and instance main methods, providing a simpler way to write and run small…

Hello Java 27! Have You Been Working Out?

Java 27 is like that friend that you haven't seen all summer, and when you finally see them again it's clear that they spent a lot of time in the gym. Bringing numerous improvements to performance and security, this…

WebAssembly and the JVM: Two Answers to “Write Once, Run Anywhere”

Same bet, twenty years apart: a portable bytecode format run by a sandboxed virtual machine. In 1995, Sun Microsystems built a slogan around a real engineering bet: compile once to bytecode, run that bytecode on a…

Gson Deserialization and the InaccessibleObjectException

Learn how to resolve an InaccessibleObjectException when working with Gson and modern Java versions. The post Gson Deserialization and the InaccessibleObjectException first appeared on Baeldung.

The Arrival of Java 27

, notes that this is the 18th feature release delivered on time under the six-month cadence, and that smaller organizations and independent developers “collectively contributed 16% of the fixes”.

JDK 27 has been released