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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 ...
Since the GNU Compiler Collection's 4.3 release, GCJ (its Java compiler) is using the ECJ parser front-end for parsing Java. [4] Examples of free runtime environments include Kaffe, SableVM and gcj. GNU Classpath is the main free software class library for Java. Most free runtimes use GNU Classpath as their class library.
Following their promise to release a Java Development Kit (JDK) based almost completely on free and open-source code in the first half of 2007, [11] Sun released the complete source code of the Java Class Library under the GPL on May 8, 2007, except for some limited parts that had been licensed to Sun by third parties and Sun was unable to re-license under the GPL. [12]
Java is a high-level, class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible. It is a general-purpose programming language intended to let programmers write once, run anywhere (), [16] meaning that compiled Java code can run on all platforms that support Java without the need to recompile. [17]
However, most language features that were added are simply a syntactic sugar. They do not require new byte-code, hence can be compiled to the Java 8. But, since the Java language was always bound to the JVM development, new language features require the same target as the JVM because they get released all together. [1]
As an example, the Java Long type is a reference ... Since Java 8, Java has a similar feature called ... a platform implementation is free to use higher precision for ...
The Java/Kotlin object viewers [4] [5] in jGRASP provide interface-based, structural, and other views of data structures and other objects and primitives during debugging and workbench operations. For example, a content-based view shows ArrayList and LinkedList in an identical way, as a list of elements.
IcedTea-web provides a free-software Java Web browser plugin. It was the first to work in 64-bit browsers under 64-bit Linux, a feature Sun's proprietary JRE later addressed. [ 27 ] This makes it suitable to enable support for Java applets in 64-bit Mozilla Firefox , among others.