There are hundreds of programming languages in use today. How can you know which one to learn first? How do you know which ones are the best for your IT field of choice? Well, I can't answer that question for you. But why not start by learning one of the top 10 most popular ones? That way you will always be able to get a job in the IT industry.
Learning a programming language is not easy, but it can be very rewarding. You will have a lot of questions at first. Just remember to get help when you need it! You can find out the answer to almost everything on Google nowadays.... so there is no excuse for failure. Also remember that it takes years to become an expert programmer. Don't expect to get good overnight. Just keep learning something new every day and eventually you will be competent enough to get the job done ;)
This article covers the top 10 most popular programming languages as ranked by Tiobe.com in June 2009. I have added some general reviews and comments about each language they listed. Remember these are my own personal opinions. Other IT professionals might have different opinions.
Java uses a compiler, and is an object-oriented language released in 1995 by Sun Microsystems. Java is the number one programming language today for many reasons. First, it is a well-organized language with a strong library of reusable software components. Second, programs written in Java can run on many different computer architectures and operating systems because of the use of the JVM ( Java virtual machine ). Sometimes this is referred to as code portability or even WORA ( write once, run anywhere ). Third, Java is the language most likely to be taught in university computer science classes. A lot of computer science theory books written in the past decade use Java in the code examples. So learning Java syntax is a good idea even if you never actually code in it.
Java Strengths: WORA, popularity
Java Weaknesses: Slower than natively compiled languages
C is a compiled, procedural language developed in 1972 by Dennis Ritchie for use in the UNIX operating system. Although designed to be portable in nature, C programs must be specifically compiled for computers with different architectures and operating systems. This helps make them lightning fast. Although C is a relatively old language, it is still widely used for system programming, writing other programming languages, and in embedded systems.
Weaknesses: Memory management can be difficult to master
C++ is a compiled, multi-paradigm language written as an update to C in 1979 by Bjarne Stroustrup. It attempts to be backwards-compatible with C and brings object-orientation, which helps in larger projects. Despite it's age, C++ is used to create a wide array of applications from games to office suites.
Weaknesses: C++ is older and considered more clumsy than newer object-oriented languages such as Java or C#.
PHP uses a run-time interpreter, and is a multi-paradigm language originally developed in 1996 by Rasmus Lerdorf to create dynamic web pages. At first it was not even a real programming language, but over time it eventually grew into a fully featured object-oriented programming language. Although PHP has been much criticized in the past for being a bit sloppy and insecure, it's been pretty good since version 5 came out in 2004. It's hard to argue with success. Today, PHP is the most popular language used to write web applications. Even English 4 IT, the program you are currently using, is written in PHP ;)
Strengths: Web programming, good documentation
Weaknesses: Inconsistent syntax, too many ways to do the same thing, a history of bizarre security decisions
5. VB ( or Visual Basic )
Visual Basic is an interpreted, multi-paradigm language developed by Microsoft Corporation for the Windows platform. It has been evolving over the years and is seen as a direct descendant of Microsoft's old BASIC from the 1970's. Visual Basic is a good language for scripting Windows applications that do not need the power and speed of C#.
Weaknesses: Only runs in Windows
Python is an interpreted, multi-paradigm programming language written by Guido van Rossum in the late 1980's and intended for general programming purposes. Python was not named after the snake but actually after the Monty Python comedy group. Python is characterized by its use of indentation for readability, and its encouragement for elegant code by making developers do similar things in similar ways. Python is used as the main programming choice of both Google and Ubuntu.
Strengths: Excellent readability and overall philosophy
C# is a compiled, object-oriented language written by Microsoft. It is an open specification, but rarely seen on any non-Windows platform. C# was conceived as Microsoft's premium language in its .NET Framework. It is very similar to Java in both syntax and nature.
Strengths: Powerful and pretty fast
Weaknesses: Only really suitable for Windows
Strengths: it's the only reliable way to do client-side web programming
Weaknesses: it's only really useful in a web browser
Perl is an interpreted, multi-paradigm language written by Larry Wall in 1986. It is characterized by a somewhat disorganized and scary-looking syntax which only makes sense to other PERL programmers ;) However, a lot of veteran programmers love it and use if every day as their primary language. 10 years ago, Perl was more popular than it is today. What happened? A lot of newer programmers and even old Perl programmers (such as myself) have switched to other languages such as PHP, Python, and Ruby. Perl is perhaps still the best language for text processing and system administration scripting. I personally do not recommend it however as a primary programming language.
Strengths: text processing and system administration
Weaknesses: strange syntax, and perhaps too many ways to do the same thing
Ruby is an interpreted, object-oriented language written by Yukihiro Matsumoto around 1995. It is one of the most object-oriented languages in the world. Everything is an object in Ruby, even letters and numbers can have method calls. It's a great language to learn if you love objects. The only negative is that it's love of object-orientation makes it a bit slow, even for an interpreted language.
Strengths: Perhaps the world's most object-oriented language
Weaknesses: its superior object model comes at a price... namely speed
Okay! Those are the top 10 programming languages in use today and some personal comments about them. Remember that opinions are like noses, everyone has one and they all smell ;) If you disagree, please feel free to email me or write your own opinions on the forum.