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Showing posts with label Java. Show all posts
Showing posts with label Java. Show all posts

The Real Reason Why Everyone Should Learn to Code


Lots of people get into programming because they love the challenge, are excited by computers and want to build a career creating websites, mobile apps or desktop programs. But even if you don’t want to become a programmer for a living, it’s still worth your time to learn how to program. I mean this in all seriousness: if computers are at all a part of your life, then learning to program is going to improve your life.
And I don’t mean in that sort of nebulous, “improve your mind,” “expand your thinking skills” and “make you a better person” sort-of-way. Learning to program can make you more productive, efficient and effective.
Here’s a real-world example: one of my colleagues at Treehouse is a video professional who films and edits courses for our site. In the process of preparing a course, Wade needs to deal with many different files — video, audio, motion graphics, and more. Because he’s very organized, he creates a set of folders to organize these materials by type, lesson and course. This requires dozens of new folders for each project.

He used to create each of those folders manually for each project. Then he took our Python Basicscourse, and with a little additional research created a simple script that creates all of the folders for him. This program asks where to create the folders, the name of the course and the number of lessons in the course. It then creates dozens of folders, all properly named for a specific project. What used to be a tedious chore, is now a simple three step process that takes just seconds to complete. He’s not a programming professional, but he’s using programming to make his work easier.
Many of the programs people use everyday can be programmed in some way. Excel, for example, lets you create simple macros to aid in creating and working with spreadsheets. Many Adobe products like Photoshop, Illustrator and After Effects can be automated using JavaScript programming. The Macintosh operating system also lets you automate some of the features of the computer using AppleScript and — starting with the Yosemite operating system — JavaScript. There’s probably some application you use daily that, if you learned to program, could help you do your work better and faster.
I program all sorts of small utilities that help me get my work done each day. For example,  one weekly report at work provides various data about my courses — it’s an HTML table full of data. I wanted to see that data in a different way, so I wrote a small bookmarklet (JavaScript code that you can run on any page in a web browser) that reads the data from the table, displays a new column of stats and color codes the results. This helps me to better see how my course is doing.
Here’s another example — one particularly annoying form that I have to fill out dozens of times a month requires that I click several buttons, one after the other, in order to complete a task. Another teacher here at Treehouse, created a bookmarklet that clicks all of the buttons with one command — saving me a lot of mousing around and clicking. An easy program to write, but a big productivity boost for me.
I have dozens of these types of programs that I’ve written. Some take less than an hour to write, but will probably end up saving me dozens of hours of frustration. I even wrote a program to solve one of our video production problems: teachers often use teleprompters which display text on a mirrored surface in front of a camera.They help teachers remember their scripts and deliver their presentations without errors.
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What Is The Best Programming Language to Start?

The truth is: the programming language you are going to start doesn’t matter too much. What really matters is to learn the concepts of programming. These are transferrable learnings from language to language and are essential to any programming language.
I learnt Java as my first programming language. I learnt for loops, while loops, conditionals, functions, Object-oriented programming and a lot of transferrable concepts.
However, it’s preferable to choose a language that it’s easy to get a first job in the area. For starters, these are the programming languages I recommend you to pick:

Python

Python is the most popular introductory language in the best U.S. universities. Just like JavaScript, Python is also flexible and it’s being used from building web applications to bioinformatics. I strongly recommend you to learn Python, it’s a great language to pick as a starter.

Java

Java is the most used language in the enterprise environment and for years it was the top-1 programming language according to the TIOBE index. Java is strongly and statically typed, which can turn easier to visualize some programming concepts.
As one of the most used languages, you’ll easily find Java courses and guides to help you in this journey. With Java, you can build server-side applications, Android apps and more.

Ruby

Ruby is my favorite programming language. It’s easy to write, easy to read and pleasant to work with. Just like JavaScript, it’s easy to learn but difficult to master. Ruby is widely used by many companies such as Airbnb, EBANX, Shopify, Twitter, GitHub and more. It has an awesome community that’s 24/7 ready to help online.
Ruby is famous by the Ruby on Rails framework, that can help you to build entire web applications with ease.

JavaScript

JavaScript is one of the most flexible programming languages I’ve ever used. You can use it to build console applications, desktop software, mobile apps, front-end development, back-end development and so on! It’s a great programming language and it’s easy to learn but hard to master.
I’d recommend you to learn and master JavaScript, but not as a first programming language. For starters, JavaScript can be hard to debug and it’s difficult to learn some concepts such as asynchronism, prototype, objects and more.

Don’t stick to languages

What you have to do by picking language to start is to learn the programming concepts. When you finish learning, you’ll be capable to learn any other programming language with a smaller learning curve.
If you want to learn how to learn a new programming language, consider reading my article “How to Learn a New Programming Language or Framework”. It will be really helpful.
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Differences Between C++ vs Java



Object-Oriented Programming


C++ and Java both are object-oriented programming languages, still, both C++ and Java languages are different from each other in many ways. To begin with, C++ vs Java have different design goals. C++ was implemented for application and system development and is an extension of C language. Along with the features of the procedural language, C++ has an added support for object-oriented programming features, exception handling, generic programming etc. C++ also has a standard library with many generic containers and algorithms.

Java was developed earlier with the functionality of an interpreter for printing systems which later supported network computing. It is built upon the virtual machine which is highly secure and portable in nature. It is grouped with a comprehensive library implemented to provide support for abstraction of the existing platform. Just like C++, Java is also statistically typed object-oriented programming language with a similar with an incompatible syntax. The main purpose of developing Java was to develop an easy to use and widely available programming language. Java has an extensive documentation as well which is known as Javadoc.




Pointer


C++ uses pointers while Java does not involve pointers. Java uses the concept of ‘restricted pointers’. A C++ program is run and the compilation is done using its compiler. The compiler in C++ converts source code into machine level language which makes C++ a platform-dependent language. In Java, java source code is first converted into bytecode at the time of compilation. This bytecode is then interpreted by the interpreter and runtime to produce the output that makes Java a platform independent language.


Thread



C++ does not provide built-in support for threads whereas Java support threads implicitly. Though in the latest implementation of C++11, it does have support for threads as well. Java is much like C++ but does not involve complex concepts like structures, operator overloading, pointers, templates, unions etc. Also, Java doesn’t have support for conditional compile (#ifdef/#ifdef type).

Key Differences Between C++ vs Java


Some of the points are explained below that shows the Differences Between C++ and Java

  • C++ uses the only compiler whereas, in Java, compiler and interpreter both are used.

  • C++ supports operator overloading and multiple inheritances but Java does not.

  • C++ is more related to hardware in contrast to Java.

  • C++ does not provide built-in support for internet whereas Java has built-in support for the same. However, C++ supports socket programming that can be used to achieve the same.

  • C++ uses the concept of header files to include different libraries in the program. Java uses import functionality to include different classes and its methods in the program.

  • C++ provides support for default arguments whereas Java does not.

  • C++ has the concept of scope resolution operator( :: ) which is used to define a method external to the class, whereas Java uses single dot( . ) which can be used to qualify classes with the namespace they came from.

  • Java does not use a go-to statement like C++.

  • Java does not have destructors, therefore, exception handling mechanism and garbage collection are different from C++.

  • Java supports method overloading whereas C++ supports method overloading as well as operator overloading.

  • Java has the concept of pass-by-value.

  • Java does not have the implementation of unsigned integers whereas C++ has.

  • C++ uses pointers and has the capability of manipulating memory addresses.

  • Java does not use pointers that make it a type-safe programming language.

  • Java uses Generics whereas C++ uses templates.

  • The JVM helps in an efficient code optimization so the performance of execution of the program is better than as that of C++.

  • C++ uses destructors which are automatically invoked at the time of object destruction.

  • Java has an in-built Thread class that needs to be inherited for the creation of a new thread. A programmer has to override its run() method.

  • C++ has no support for Threads like Java, C++ achieve the functionality of thread using external libraries.
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