!["LazyConstants in JDK 26" [IJN]](https://static.libsyn.com/p/assets/f/d/0/2/fd021aa2630eed96d959afa2a1bf1c87/Cover-49.png)
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Show Notes
Lazily initializing fields in Java is error-prone and undermines constant-folding. JDK 26 comes with JEP 526, which previews LazyConstant, a type that lazily initializes a value through a given Supplier. It executes that supplier at most once successfully and then assigns the value to a field annotated with @Stable, which allows constant folding. This API is also a poster child for how OpenJDK develops and evolves features.