Programming for Everyone in Java

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  1. Java | How to start learning Java
  2. Who we are
  3. Hackernoon Newsletter curates great stories by real tech professionals
  4. Java (programming language) - Wikipedia

From desktop to web applications, scientific supercomputers to gaming consoles, cell phones to the Internet, Java is used in every nook and corner. You can download java from here. Here you will find different versions of java. Choose and download the one compatible with your operating system. For detailed instructions for setting up of Java, refer this article.


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If the environment is set up correctly and the code is correctly written, you shall see this output on your console. That is your first Java program! If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below. Writing code in comment? Please use ide. About Java Java is a simple language: Java is easy to learn and its syntax is clear and concise. Java has removed many confusing and rarely-used features e. Java also takes care of memory management and it also provides an automatic garbage collector.

Java | How to start learning Java

This collects the unused objects automatically. Java is a platform-independent language: The programs written in Java language, after compilation, are converted into an intermediate level language called the bytecode which is apart of the Java platform irrespective of the machine on which the programs run.

Java is an object-oriented programming language: OOP makes the complete program simpler by dividing it into a number of objects. The objects can be used as a bridge to have data flow from one function to another. Java is a robust language: Java programs must be reliable because they are used in both consumer and mission-critical applications, ranging from Blu-ray players to navigation systems. Java is a multithreaded language: Java can perform many tasks at once by defining multiple threads.

This keeps the GUI responsive. Java programs can create applets: Applets are programs that run in web browsers. Java does not require any preprocessor: It does not require inclusion of header files for creating a Java application. Therefore, Java is a very successful language and it is gaining popularity day by day.

Important tips and links to get you started Understand the basics: Learning the basics of any programming language is very important. It is the best way to begin learning something new. Serialization is a technique to convert the object state into a byte stream so that it can be easily transported. Java has its own memory management, no pointer concept, access specific keywords as public, private, protected, compile-time checking and exception handling are the features which make Java more secure.

Obviously, Java is more secure than C. Java contains set of API for cryptography to provide more security. Exception handling feature prevent to generate errors during runtime.

A pointer is used to directly access the location using the address. Memory access via pointer is arithmetic and it is unsafe. Runnable interface has been around since Java 1. Callable:- Callable objects returns a value and it can throw an exception. Callable was only introduced in Java 1.

Java Callable interface use Generic to define the return type of Object. Executors class provide useful methods to execute Java Callable in a thread pool. Since callable tasks run in parallel, we have to wait for the returned Object. The Java Executor Framework follows WorkerThread patterns, wherein a thread pool you can initiate threads by using the Executors.

Executer framework offers a submit method to execute callable implementations in a thread pool. It is an abstraction layer in the actual implementation of Java Multithreading. Executor framework is the first concurrent utility framework in Java which is used for standardizing invocation, scheduling, execution, and execution and control of asynchronous tasks in parallel threads. Akhil Bhadwal.

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Akhil Bhadwal A Computer Science graduate interested in mixing up imagination and knowledge into enticing words. C vs Java: Important Differences you should Know. Best way to learn Java. Tonya Barton February 8, am Reply. Ariel Cohn February 20, pm Reply. Lorraine Craig February 8, am Reply. Mckinley Peak February 20, pm Reply.

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Hackernoon Newsletter curates great stories by real tech professionals

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Java (programming language) - Wikipedia

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