Java

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Java is a high-level programming language developed by Sun Microsystems. Although it was originally designed to develop programs for set-top boxes and handheld devices, it later became quite popular for making web applications.

Java’s syntax is very similar to C ++, but it is completely an object-oriented programming language.

For example, most Java programs have classes used to define objects and methods, which are then assigned to individual classes.

Java is much more strict than C ++, which means that variables and functions must be explicitly defined. Java source code produces more errors or “exceptions” than other languages. But it also limits other types of errors generated by undefined variables or unassigned types.

Unlike Windows executables (.EXE files) or Macintosh applications (.APP files), Java programs are not run directly by the operating system. Still, Java programs are interpreted by the Java Virtual Machine, or JVM, across multiple platforms.

This means that all Java programs are multiplatform and can run on different platforms, including Macintosh, Windows, and Unix computers. But to run Java applications or applets, JVM must be installed.

There is also a good thing, JVM is included on the part of Java Runtime Environment (JRE), which is available for a free download.

Note: Oracle acquired Sun Microsystems in January 2010. Therefore Java is now maintained and distributed by Oracle.

File extensions: .JAVA, .JAVA, .JAD, .JAR, .JSP, .CLASS

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