#JAVASCRIPT OR JAVA CODE#
V8 compiles the JavaScript source code into native machine code before executing it and other modern JS implementations like Rhino (which is actually written in Java!) or TraceMonkey do similar things. With the rise of the V8 engine that powers Google's Chrome Browser the clear differentiation between interpreted and compiled became somewhat blurry. However, this isn't a definitive answer anymore. So many people are going to tell you that JavaScript is indeed an interpreted language as per the language specification. In contrast, Java (or C++) is a compiled language meaning that the source code cannot be run directly but has to be compiled into bytecode by a compiler before. Interpreted in this context means that the source code can directly be executed by the interpreter, line by line.
Originally JavaScript was designed as an interpreted, high-level and dynamic programming language.
#JAVASCRIPT OR JAVA SOFTWARE#
This is a question often raised during interviews for software engineering jobs. Also, many libraries and frameworks like Next.js, Vue.js, or Reactjs use this to indicate that they are written in JavaScript. People often use the term js as an abbreviation of the term "JavaScript". Basically to extend the capabilities of HTML and CSS at that time. In 1995, Brendan Eich created JavaScript (originally it was called LiveScript) during his time at Netscape with the purpose of dynamical HTML in web browsers to analyze user interactions and changing, generating, and updating content. In JavaScript, one can write code either object-oriented, procedural, or functional - whatever fits best. Since ECMAScript 6, JavaScript can compete with other object-oriented languages because of the introduction of prototypes. JavaScript is a scripting language that is standardized as ECMAScript and described as interpreted, dynamical typed, object-oriented but class-less. Since 2010 Java belongs to the Oracle Corporation as part of the acquisition of Sun Microsystems. The original compiler was written in C and shortly after the language was renamed to Java and the focus shifted to the World Wide Web. The first prototype was called Oak (Object Application Kernel) and it was targeted towards interactive television and other entertainment devices. Java was originally invented by James Gosling in the early 1990s during his time at Sun Microsystems because he was not satisfied with the capabilities of C++. Applications written in Java can run on almost any device and computer architecture if a corresponding runtime environment is installed. This virtualization enables platform-independence, a big feature of Java. This means that the code isn't directly run by the hardware but by software on the target platform. The machines running the bytecode are typically virtual machines. This source code cannot be run directly and needs to be compiled by the Java Compiler, which is part of the JDK, into bytecode that computers can understand. Java applications are written in a form that humans can understand, the so-called source code. It is important to know that the JRE can not only run bytecode compiled from Java but also from other programming languages like Scala, Groovy, or Kotlin (and theoretically from any other languages if a bytecode compiler exists for them). The runtime itself consists of several libraries and the Java Virtual Machine (JVM). Together with the Java Development Kit (JDK) and the Java Runtime Environment (JRE) it forms the Java Technolgy. Java in this context is a class-based, object-oriented programming language and one of the most popular languages in the world. But before we take care of the differences between the programming languages Javascript and Java, let us find out what these two terms mean and what the languages are used for. Therefore, it is time to bring clarity to this matter once and for all. The two terms Java and JavaScript are often used as synonyms, being mistaken or simply thought of as the evolution of the other language, which is completely wrong. Even today many people are asking the question "What is the difference between Java and Javascript".
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