Java 21 面试题与答案

问题 16. How can we download Java 21?

You can download Java 21 from Oracle website: Download Java 21

问题 17. Please provide some details on GraalVM for JDK 21.

GraalVM for JDK 21 binaries are free to use in production and free to redistribute, at no cost, under the GraalVM Free Terms and Conditions (GFTC).

GraalVM for JDK 21 will receive updates under the GFTC, until September 2026, a year after the release of the next LTS. Subsequent updates of GraalVM for JDK 21 will be licensed under the GraalVM OTN License Including License for Early Adopter Versions (GOTN) and production use beyond the limited free grants of the GraalVM OTN license will require a fee.

Oracle GraalVM uses the Graal just-in-time compiler and includes the Native Image feature as optional early adopter technology.

问题 18. Where can we download GraalVM for JDK 21?

You can download GraalVM for JDK 21 from Oracle website: Download GraalVM for JDK 21

问题 19. Could you please provide the Java 21 documentation link?

Here is the Java 21 documentation link: Java 21 Documentation

问题 20. How to work with GraalVM for Java 21?

Please check the details here on GraalVM for Java 21:

GraalVM for Java 21