What is the difference between core java and java script?

Answer 1

Java is a programming language that is compiled into an intermediate language called byte code. In contrast, Java Script which resembles C++ more than Java, and was named after Java due to Java's popularity, is rendered by an internet browser's engine.

Answer 2

Other than a few syntactical similarities (both languages borrow heavily from C syntax) Java and JavaScript are completely different technologies. The similarity in their names was a marketing ploy by JavaScripts creators to try and ride the coat-tails of Java, which was the hot new language when JavaScript was created.

Core Java refers to the core set of classes available in the Java programming language. (Essentially, the most important classes that a programmer can count of being available no matter what.)

Java is a class-based object oriented, computer programming language created by Sun Microsystems and currently owned by Oracle. It is a full featured, compiled programming language. It's used to create all kinds of software, but the key point here is that it is turned into byte-code by the Java Virtual Machine before it is run on the computer. By default, Java has access to everything on the machine. It can make changes to the OS, write files, access the network--you name it.

JavaScript is a proto-type based object oriented scripting language that was invented by Netscape in the mid 1990s. It's used to add dynamic functionality to web pages. As a scripted language, JavaScript is not compiled. Rather, its source code is sent as text to the browser, which then parses the file and acts accordingly. JavaScript is extremely constrained, due to security concerns, and cannot access your hard-drive, with the exception of a few, very limited locations.

Answer 3

js is the file name for javascript files. For eg. "Validation.js" which is a file containing javascript code. If you mean JSP then it is different which stands for Java Server Pages.

Answer 4

No similarities. JavaScript was actually originally called Mocha, then LiveScript, and just wanted to hop on the bandwagon of popularity that Java was getting.