Why does javac insert Objects.requireNonNull(this) for final fields?

Since the field is not only final, but a compile-time constant, it will not get accessed when being read, but the read gets replaced by the constant value itself, the iconst_5 instruction in your case. But the behavior of throwing a NullPointerException when dereferencing null, which would be implied when using a getfield instruction, must … Read more

What is the difference between JDK_JAVA_OPTIONS and JAVA_TOOL_OPTIONS when using Java 11?

JDK_JAVA_OPTIONS is only picked up by the java launcher, so use it for options that you only want to apply (or only make sense for) the java startup command. This variable is also new on JDK 9+, and will be ignored by earlier JDK versions. Hence, it’s useful when migrating from older versions to 9+. … Read more

Unable to use Lombok with Java 11

TL;DR Upgrade Lombok as a dependency and as a IDE plugin (IntelliJ, NetBeans, Eclipse) and enable Annotation Processing in IDEs settings. Latest version of Lombok and/or IntelliJ plugin perfectly supports Java 11. https://projectlombok.org/changelog v1.18.4 (October 30th, 2018) … PLATFORM: Many improvements for lombok’s JDK10/11 support. … https://github.com/mplushnikov/lombok-intellij-plugin Provides support for lombok annotations to write great … Read more

Netty- cannot access class jdk.internal.misc.Unsafe

To allow netty to access the class, start java with the following option: –add-opens java.base/jdk.internal.misc=ALL-UNNAMED This opens the package jdk.internal.misc in module java.base to the unamed module. See also the documentation for the java command, and this intro to the Java module system in general. EDIT: For Netty to use its direct buffer optimizations, you … Read more

Does java 11 support android?

With Android Studio Arctic Fox | 2020.3.1 finally you can use Java 11 in your project, here more info: https://developer.android.com/studio/past-releases/past-agp-releases/agp-7-0-0-release-notes#java-11 You can now compile up to Java 11 source code in your app’s project, enabling you to use newer language features like private interface methods, the diamond operator for anonymous classes, and local variable syntax … Read more

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