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The Java Class Library (JCL) is a set of dynamically loadable libraries that Java Virtual Machine (JVM) languages can call at run time. Because the Java Platform is not dependent on a specific operating system , applications cannot rely on any of the platform-native libraries.
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).
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]
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]
Sun Java System was a brand used by Sun Microsystems to market computer software.The Sun Java System brand superseded the Sun ONE brand in September 2003. There are two major suites under this brand, the Sun Java Enterprise System suite of infrastructure software, and the Sun Java Desktop System graphical user environment.
On April 2, 1997, Sun Microsystems and Netscape announced their intention to combine IFC with other technologies to form the Java Foundation Classes. [1]Ultimately, Sun merged the IFC with other technologies under the name "Swing", adding the capability for a pluggable look and feel of the widgets.
The Java Foundation Classes are comparable to the Microsoft Foundation Class Library (MFC). JFC is an extension of the original Java Abstract Windowing Toolkit (AWT). Using JFC and Swing, an additional set of program components, a programmer can write programs that are independent of the windowing system within a particular operating system.
The main classes and interfaces in java.lang are: Object – the class that is the root of every class hierarchy. Enum – the base class for enumeration classes (as of J2SE 5.0). Class – the class that is the root of the Java reflection system. Throwable – the class that is the base class of the exception class hierarchy.