OpenJDK 21 Compiler Warning on Constructor Calling Overridable Methods

THe OpenJDK 21 beta 15 early access build (released 23 March 2023) adds an -Xlint warning to the Java compiler…

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More Frequent Java Long-Term Releases

A little over four years ago, Mark Reinhold (Chief Architect of the Java Platform Group at Oracle) stated in his…

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JDK 18: Code Snippets in Java API Documentation

OpenJDK 18 Early-Access Build 16 (2021/9/23) is now available and includes the implementation for JEP 413 (“Code Snippets in Java…

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Java’s Optional Does Not Supplant All Traditional if-null-else or if-not-null-else Checks

Java‘s addition of java.util.Optional has been welcome and had led to more fluent code for methods that cannot always return…

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The Case of the Missing JEPs

The JDK Enhancement-Proposal (JEP) process is “for collecting, reviewing, sorting, and recording the results of proposals for enhancements to the…

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Surprisingly High Cost of Java Variables with Capitalized Names

I’ve read hundreds of thousands or perhaps even millions of lines of Java code during my career as I’ve worked…

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Implementing equals(Object) with instanceof Pattern Matching

Pattern matching for the instanceof operator was introduced as a preview feature with JDK 14 and was finalized with JDK…

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Java NullPointerException Avoidance and Enhancement Tactics

An encountered NullPointerException can be a useful mechanism for highlighting when a certain code flow or certain data has led…

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JDK 17: Hexadecimal Formatting and Parsing

Build 3 of JDK 17 Early Access Builds includes the implementation for JDK-8251989 (“Hex formatting and parsing utility”). This newly…

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