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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]
In the Java programming language, a keyword is any one of 68 reserved words [1] that have a predefined meaning in the language. Because of this, programmers cannot use keywords in some contexts, such as names for variables , methods , classes , or as any other identifier . [ 2 ]
A snippet of Java code with keywords highlighted in bold blue font. The syntax of Java is the set of rules defining how a Java program is written and interpreted. The syntax is mostly derived from C and C++. Unlike C++, Java has no global functions or variables, but has data members which are also regarded as global variables.
J2ME—Java 2 Micro Edition; J2SE—Java 2 Standard Edition; JAXB—Java Architecture for XML Binding; JAX-RPC—Jakarta XML (formerly Java XML) for Remote Procedure Calls; JAXP—Java API for XML Processing; JBOD—Just a Bunch of Disks; JCE— Java Cryptography Extension; JCL—Job Control Language; JCP—Java Community Process; JDBC—Java ...
Many widely used languages, such as C++, Java, and Python, provide object-oriented features. Although in the past object-oriented programming was widely accepted, [ 51 ] more recently essays criticizing object-oriented programming and recommending the avoidance of these features (generally in favor of functional programming ) have been very ...
This is a list of the instructions that make up the Java bytecode, an abstract machine language that is ultimately executed by the Java virtual machine. [1] The Java bytecode is generated from languages running on the Java Platform, most notably the Java programming language.
Arrays are reified, meaning that an array object enforces its type information at run-time, whereas generics in Java are not reified. [6] More formally speaking, objects with generic type in Java are non-reifiable types. [6] A non-reifiable type is type whose representation at run-time has less information than its representation at compile ...
In computing based on the Java Platform, JavaBeans is a technology developed by Sun Microsystems and released in 1996, as part of JDK 1.1.. The 'beans' of JavaBeans are classes that encapsulate one or more objects into a single standardized object (the bean).