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The 1.0 and 1.1 Java virtual machines (JVMs) used a mark-sweep collector, which could fragment the heap after a garbage collection. Starting with Java 1.2, the JVMs changed to a generational collector, which has a much better defragmentation behaviour. [13] Modern JVMs use a variety of methods that have further improved garbage collection ...
Some programs allow the conversion of Java programs from one version of the Java platform to an older one (for example Java 5.0 backported to 1.4) (see Java backporting tools). Regarding Oracle's Java SE support roadmap, [ 4 ] Java SE 23 is the latest version, while versions 21, 17, 11 and 8 are the currently supported long-term support (LTS ...
1960, IFIP WG 2.1, ISO [8] ALGOL 68: Application Yes No Yes Yes Yes No Concurrent Yes 1968, IFIP WG 2.1, GOST 27974-88, [9] Ateji PX: Parallel application No Yes No No No No pi calculus: No APL: Application, data processing: Yes Yes Yes Yes Yes Yes Array-oriented, tacit: Yes 1989, ISO Assembly language: General Yes No No No No No
Software written in Java, especially its early versions, has been criticized for its performance compared to software written in other programming languages. Developers have also remarked that differences in various Java implementations must be taken into account when writing complex Java programs that must work with all of them. [1]
Oracle JDK 1.8.0_311, 11.0.13, 17.0.1 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.
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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 Interpreter-only port of OpenJDK using almost no assembly language and designed to be very portable. 1.7 No Yes Yes No No IKVM.NET? ? ? Whatever the .NET runtime uses JAmiga ...
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 .