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OpenJDK (Open Java Development Kit) is a free and open-source implementation of the Java Platform, Standard Edition (Java SE). [2] It is the result of an effort Sun Microsystems began in 2006, four years before the company was acquired by Oracle Corporation.
As of GCC 7, gcj and associated libjava runtime library have been removed from GCC. [1] IKVM.NET – Java for Mono and the Microsoft .NET Framework. Uses OpenJDK. Zlib License. JamVM – developed to be an extremely small virtual machine. Uses GNU Classpath and OpenJDK. Supports several architectures. GPL. Last update 2014.
It is derivative of the community driven OpenJDK which Oracle stewards. [5] It provides software for working with Java applications. Examples of included software are the Java virtual machine, a compiler, performance monitoring tools, a debugger, and other utilities that Oracle considers useful for Java programmers.
GraalVM Native Image enabled reporting on the build to produce multiple artifacts, and improved compatibility with Windows. Multi-tier compilation was enabled by default for the polyglot runtime (first introduced in GraalVM 20.3); a new sandbox option --sandbox.MaxHeapMemory=<size> to specify the maximum heap memory was introduced. GraalVM 21.2.0
The Java virtual machine is an abstract (virtual) computer defined by a specification. It is a part of the Java runtime environment. The garbage collection algorithm used and any internal optimization of the Java virtual machine instructions (their translation into machine code) are not specified. The main reason for this omission is to not ...
The Eclipse Temurin project produces Temurin (/ ˈ t ɛ m j ər ɪ n /), a certified binary build of OpenJDK. The initial release in October 2021 [8] supported Java LTS 8, 11, 17, and 21. The name for the project, Temurin, is an anagram of the word runtime. [9]
The same version of the JVM can be used in OpenJDK 8 and later releases, which means that many features and improvements can be exploited by applications that run on different versions of Java. Compared to Oracle 's HotSpot VM, OpenJ9 touts higher start-up performance and lower memory consumption at a similar overall throughput.
OpenJDK Other Interpretation AOT JIT; GCJ: No longer maintained or distributed by GNU as of GCC 7 [16]? Yes No Yes Yes No HotSpot, OpenJDK edition Reference implementation. 1.8 No Yes Yes No Yes HotSpot, Oracle JDK edition Reference implementation. 1.8 No Yes Yes No Yes HotSpot, Java SE embedded edition ? No Yes Yes No Yes HotSpot, Zero port