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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.
The Eclipse Adoptium (/ ə ˈ d ɒ p t i ə m /) Working Group is the successor of AdoptOpenJDK. [2] [3]The main goal of Adoptium is to promote and support free and open-source high-quality runtimes and associated technology for use across the Java ecosystem. [4]
JDK Flight Recorder is an event recorder built into the OpenJDK [1] Java virtual machine. It can be thought of as the software equivalent of a Data Flight Recorder (Black Box) in a commercial aircraft. It captures information about the JVM itself, and the application running in the JVM. There is a wide variety of data captured, for example ...
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.
Java 7 was the default version to download on java.com from April 2012 until Java 8 was released. [111] ... OpenJDK 10 was released on March 20, 2018, ...
OpenJDK 1.8.0_312, 11.0.13, 17.0.1 The GraalVM distributions for Java SE 17 became available for download. The release added a new Infeasible Path Correlation optimization to eliminate infeasible paths, provided an implementation for Constant Blinding to defend against JIT spraying attacks.
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.
In order to be able to do this before the whole class library is made free, and to be able to bundle OpenJDK in Fedora Core and other free Linux distributions, Red Hat has started a project called IcedTea. It is basically an OpenJDK/GNU Classpath hybrid that can be used to bootstrap OpenJDK using only free software. [23] [24]