Skip to main content

Compilers and interpreters

Programming languages allow you to interact with computers but writing a program would end in itself without compilers and interpreters. A computer would not be able to understand a program written with programming languages without the code being first translated into machine language; in the case of compilers, or interpreted in the case of interpreters. 

Compiled and interpreted languages

Except for Java where we can summarize with a term typical of (middle way) the constraints of a compiled program as in C, C ++ compared to an interpreted one, to understand them you have to go back in time to the birth of the Web; this is the only way to understand what prompted the need to find alternative solutions to those of compiled languages. Even though things have changed today with languages that have improved the internet experience such as:
  • JavaScript,
  • PHP,
  • ASP,
  • JSP
at the time, the "small applications written in Java" Applets were the first to open the way to the new way of understanding the Web. The Netscape Browser was the first to integrate a Java Virtual Machine into it; demonstrating and allowing interaction through the client-side Browser, in Run time.

Compilers and interpreters

The difference between an interpreted program is that the compiled one is assembled in binary code only once creating the executable; vice versa the interpreted code is executed every time in run time. A concrete example of an interpreted code is the one used for the Web.

Compilers and interpreters
Compilers and interpreters 


The success of Java

The JVM has determined the success of Java by allowing the Byte code of an application written in Java code to be interpreted, in Run Time; platform-independent! The Java Virtual Machine can be integrated on any operating system be it:
  • Linux,
  • Mac Os,
  • Windows,
  • Solaris 
allowing to circumvent all those constraints that you had instead with compiled programs like C ++; which were forced to include third-party external libraries to increase portability, not without a few compatibility issues.
Labels:

Comments

Post a Comment

Popular posts from this blog

Breadcrumbs in Notable Blogger theme

The modern themes available in Blogger are suitable for mobile devices; this is important in terms of indexing but Blogger not support breadcrumb of schema.org by default. If you add a few lines of code you can greatly improve your SEO and therefore your ranking in Google Search. I create a personal breadcrumb solution; if you have installed a responsive theme like mine in this article I explain how to add Breadcrumbs in Notable Blogger theme. How to add breadcrumbs in Notable Blogger theme First thing create a backup of you theme for security reasons You can add breadcrumbs in JSON-LD format or as following micro-data solution: Open your Blogger Dashboard Click on Theme >> Download a Backup for security reason Copy this code  <div class='post-body-container'>   Click Ctr+F and past the copied code then click Enter You will find this tag 1 time. Breadcrumbs in Notable Blogger theme Now copy the following code and past it below the tag : <b:if cond='data:view.
Post a Comment
Read more

How to insert JavaScript into web pages

You have learned everything there is to know about HTML and CSS to start building your static website and now you would like to make it dynamic but you don't know how to insert JavaScript into web pages; right? Don't worry! Inserting the scripts into html files is really a breeze. If you read this article, in the next five minutes you will discover all the methods for inserting JavaScript into html files. How to insert JavaScript into HTML file JavaScript need HTML file to work.  Like CSS all methods of inserting JavaScript into a Web Page can be divided into two sections; add the scripts inside the TAG of  HTML file or by calling them externally. In detail we can insert JavaScript: Directly into Body of the HTML file. In the Head Tag and recall it in the body. With a relative or absolute external reference. Insert JavaScript into HTML file We will see an example of how to insert JavaScript shortly but first let's focus on when it is useful to do an explicit or implicit
Post a Comment
Read more

Object cache problem of the AMP plugin for WordPress

If you are looking for one solution to the fix object cache problem of the WordPress AMP plugin displayed in dashboard from Site health; in this article I will show You how to do this in five minutes. Usually this situation arises when the installed theme is non an official theme and You have not cache plugin installed; anyway don't worry! We will solve the problem in a moment. Object cache problem of the AMP plugin for WordPress Why is important to enable persistent object cache for AMP  Accelerate mobile page (AMP), is latest technology of the Web. An amp page load very fast compared to to a standard Web page and Google search engine like very much this; so you can improve the ranking of your site and get more mobile users traffic. Persistent object cache If persistent object cache is enabled, WordPress work better; the images and files as CSS will loaded more fast. Every WordPress Hosting have a cache service, otherwise it would be very strange and I recommend that you consider
Post a Comment
Read more