What are the differences between java and JavaScript?

Answer 1

There's a world of difference between the two. Javascript is used for front-end web development while Java can only be used as a back-end language within a web environment. Java doesn't need a web browser to compile and execute like Javascript does. Java is compiled prior to runtime while Javascript is compiled at runtime. The syntax/reserved-words are also different. There's many more differences if you go and do some research on the two languages.


Following are some points which differentiates java & javascript

1. Java follows strong type checking where as Javascript is very flexible in datatype(loosly typed). Supports types which represents boolean,int,string
   

2. • Ex : Variables in Java is declared as datatype ; --> int num;
     

   • But in Javascript variable declaration will be as var ; --> var myName;

3. Javascript support function declarations, but without accessibility specifiers,parameter datatype,return type

• Javascript : function fcnName(str)

{
........function body..........
}

• Java : public int functionName(int no)

{
..........function body.........
}




will continue with answer...........
Java is a programming language designed to run in a Java Virtual Machine which is itself a program that allows java programs to run on any computer/device a Java Virtual Machine has been programmed for.

Java script is a scripting language that runs inside of a internet browser to enhance the web experience. Java script is designed to expand the capabilities of a web page so that it behaves more like a program on the computer than just a static page of text and images.

Answer 2

Java is a programming language platform originally developed by Sun Microsystems. It allows a programmer to develop applications that run on any platform (Windows, Mac, Unix) because it does not depend on computer architecture. Instead it is executed by a JVM (Java Virtual Machine) that works much the same way as the Flash Player which executes SWF (Shockwave Flash) files. It promises "Write Once, Run Anywhere" (WORA) programs, because Sun provides Runtimes at no cost. JVMs have also been developed by third parties such as Microsoft's implementation of JVM on Windows. After a legal dispute regarding incompatibility, Microsoft dropped their JVM and no longer supply it with Windows, although Sun has developed a free Runtime for Windows and Internet Explorer. Java is mainly a platform like the .NET Framework which includes standards for hwo programs are written, as well as Runtimes that execute the code on different platforms. JavaScript on the other hand is a standardised scripting language primarily used to make Applets on Web Pages. The JavaScript language is also used by many programs. Adobe Flash has an implementation of the JavaScript standard known as Actionscript, Apple Mac OSX's Dashboard Widgets are also coded in the same standard. The main difference is that Java is a platform, whereas JavaScript is a computer programming/scripting language that does not refer to how the scripts are executed. Java programs are usually compiled into bytecode which runs within a Java Virtual Machine. The program can run as an applet inside a browser, a servlet on the server, a regular desktop application, etc. JavaScript is a scripting language that usually runs inside the web browser. It is not compiled in advance - it is interpreted on the fly by the browser. Languages themselves are also different in many regards. There is no real connection between the two, except for that unfortunate similarity in the name.

Answer 3

Java is a programming language and JavaScript is a scripting language. A scripting language is a lightweight programming language. They are both independent of each other, they just share a similar name and similar syntax.

Answer 4

Java and Javascript are different languages. Java was created by Sun MicroTech to use a strict programming language

Javascript was created by Netscape to create an interactive web platform <Netscape Navigator 2.0>

Answer 5

It isn't.

If you're going to relate the two, you really have to ask how JavaScript is related to Java.

Back in 1995 a gentleman named Brendan Eich created JavaScript at Netscape. The folks at Netscape originally called JavaScript "LiveScript" but the name was quikcly changed to reflect the new addition of Java support in Netscape's browser.

In those days, Java was the hottest new web programming language. And the name change is believed to reflect an attempt by Netscape to cash in on the buzz surrounding Java.

Aside from similar syntax (which JavaScript and Java also share with C, C++, PHP, C#, J#, etc.) there is no real relationship here.

It's just a coincidence of names.

Answer 6

Java is a full fledged, class-based, object-oriented programming language. JavaScript is a proto-type based scripting language that is parsed on the clients browser.

Answer 7

No. HTML is the structure of a site. JavaScript is the interactivity it has with you.