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JAVA

Java is au00a0programming languageu00a0and au00a0platform.u00a0 Java is a high level, robust, object-oriented, and secure programming language.<br>

HimaniKathal
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JAVA

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  1. Power Point Presentation on Topic: JAVA Submitted by : HimaniKathal

  2. What is java? Java is a programming language and a platform.  Java is a high level, robust, object-oriented and secure programming language. Java was developed by Sun Microsystems (which is now the subsidiary of Oracle) in the year 1995. Java is platform-independent that means java code can be compiled on any operating system and made to run on the same or any other operating system. Java supports concurrency which means the code can be executed by multiple processes at the same time. Java is class-based and object-oriented.

  3. Why do we use java? Simplicity:Java was developed keeping in mind the complexities in other programming languages like C or C++. Portability:As already covered java source code can be developed and compiled on one machine and can be made to run on the same or any other operating system. Object-Oriented:In java, everything is treated as an object and all the operations involved in application development are completed using these objects. Dynamic Capability:Applications developed using java can adapt them to changing execution environment.

  4. High Security: In terms of security java is operated on byte code which is not readable in nature. It runs source code inside a secured sandbox and does not allow any external intervention. Robust:Java is developed keeping in mind all possibilities, and therefore there is no existence of the error. Multithreading:Java supports creating multiple threads for execution thus providing high performance. Interpreted:The code is converted into byte code which in turn is interpreted by java run time environment. Performance:Java provides high performance as it makes use of byte code which can be translated into machine code with ease and with high speed.

  5. What can we do with Java? Banking and Financial Domain : Banking domain makes use of java for handling transactions. It performs exceptionally well while handling millions of transactions in an efficient way. Web Application Development : This refers to website development. In web application development java provides server-side technologies that receive data from front end user interfaces and provide data to back end logical processing layer and after processing data is returned to front end through these server-side technologies.

  6. Gaming Applications: It has the support of one of the most popular 3D-Engine,which can be used to design three-dimensional games. Android Application Development: Java is also used for the development of android applications. Android applications are developed using java API. Desktop Applications: It is also used to develop standalone desktop applications. It has Abstract Windowing Toolkit (AWT) to allow GUI development. Big Data: Map-reduce framework for handling big data processing is written in java. Cloud Applications: It provides features that can be used to build applications used in Saas, Paas and Iaas cloud development.

  7. What are the applications of Java? Desktop GUI Application : The desktop application can easily develop in Java, to support this java provides AWT, Swings, and JavaFX. Scientific Application : Java supports to scientific application development, because of its security powerful, robustness features, much scientific application based on Java technology like MATLAB. Enterprise Applications : For Enterprise application development Java is the first choice because of its powerful features that match the requirement

  8. Web Applications : Java used to develop web application  also to support the java has provided JSP, Servlet, Struts, Spring, hibernate. With the help of the technologies, we can easily develop any kind of web application based on customer requirements. Mobile Applications : A mobile application can easily be developed with help of java. In Today’s world, every second phone has an android OS which is based on Java.

  9. How to run and execute program in Java? Code : class Simple {   publicstaticvoid main(String args[]) {         System.out.println("Hello Java");       }   }   Output : “Hello Java”

  10. To compile : javac Simple.java To execute : java Simple To save file : .java extension is used.

  11. What are the parameters used in Java program? class keyword is used to declare a class in java. public keyword is an access modifier which represents visibility. It means it is visible to all. staticis a keyword. If we declare any method as static, it is known as the static method. The core advantage of the static method is that there is no need to create an object to invoke the static method. The main method is executed by the JVM, so it doesn't require to create an object to invoke the main method. So it saves memory. void is the return type of the method. It means it doesn't return any value.

  12. main represents the starting point of the program. String[] args is used for command line argument. We will learn it later. System.out.println() is used to print statement. Here, System is a class, out is the object of PrintStream class, println() is the method of PrintStream class.

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