The final list of features arriving in JDK 17 is: This phase means the overall feature set is frozen and no further JEPs will be targeted to this release. Deprecations/Removals Biased locking JEP 374 – Deprecated in Java 15īiased locking was an optimization technique that used to be effective.Oracle recently announced that JDK 17 has entered Rampdown Phase 2. If this sounds of interest, check out the JEP for more details, as these changes are experimental and are not ready for preview just yet. Both JEPs are proposed as part of Project Panama as ways to improve the handling of foreign APIs in Java. These 2 features are currently incubating, so their API’s are experimental and require their modules to explicitly be added in order to try.
Foreign Function and Memory API & Vector API (Incubating) JEP 412 / JEP 414 – Changed in Java 17 This change adds per-stream filters that does not require every stream creator to participate and a configurable JVM-wide filter factory. The problem with is was that it was implemented for a single static JVM-wide deserialization filter (which did not scale very well). Java 9 added in new functionality that allowed for data streams to be validated before being deserialized. Context-Specific Deserialization Filters JEP 415– Changed in Java 17 Some of these interfaces have new generation methods implemented. This change adds 4 new Interfaces to make the process of switching out PRNGs easier, they are: New PseudoRandom Number Generators (PRNGs) JEP 356 – Changed in Java 17 This is based of the Edwards-Curve Digital Signature Algorithm that is described in RFC 8032. New Cryptographic Signature Algorithm is available. New macOS Rendering Pipeline JEP 382 – Changed in Java 17įollowing the new Rendering Pipeline being added to macOS, Java 17 has implemented the Metal framework as an alternative to the existing pipeline. ZGC / Shenandoah GC JEP 377 / JEP 379 – Changed in Java 15īoth Garbage Collectors have now matured to product features from experimental features. NullPointerException JEP 358 – Changed in Java 14Įver get a NullPointerException stacktrace that points to a specific line, but not only to find that the line has various variables that could have been the cause? Since Java 14 NullPointers will do their best to inform you which variable it is that is nullįor example .compare() Ĭould tell you if ord is null when trying to access the value of y.
It should be noted that they are not anonymous and can still be seen with Class::getName. These are primarily useful for run-time generated classes and allows for some stronger access control in this use-case. Hidden classes are another under the hood change that allows for classes to be used in an encapsulated manner where they cannot be used directly by bytecode of other classes, and instead relies on being loaded via reflection. Hidden Classes JEP 371 – Changed in Java 15 This is an under the hood change that end users shouldn’t need to worry about. This change is made to help Math and StrictMath more consistent with their floating point semantics as the original implementation was added for architecture that is no longer relevant. Always-Strict Floating-Point Semantics JEP 306 – Changed in Java 17 If you require any of the above functionality, consider looking into using Object or AtomicReference. No longer do you have to check if an object is in instance of a class & then cast the object into that same class immediately after, instead, just add the variable name at the end of the statement & Java will set up the scoped variable for you to use.įor example: if (obj instanceof String s) // Do not do this New features Pattern Matching for instanceof JEP 394 – Added in Java 16įirst up is a nice change to reduce boilerplate code, Pattern Matching has been added for use with instanceof calls. Each item has it’s related JEP which contains even more details about the change involved and the thought process behind it, so if any change stands out to you, you can find out more. So in this blog post we’ll be going over some of the key changes. In the past 6 Java versions there have been various changes implemented, and when considering switching onto the latest LTS, it’s nice to have a quick overview of what’s changed.
Java 17 is the newest long term support (LTS) release since Java 11.
Jdk 15 text blocks Pc#
He enjoys experimenting with different computer systems, D&D, and a variety of PC games. Daniel Warren Daniel is a Java Developer at IDRsolutions and the product manager for FormVu.
0 kommentar(er)
