The main goal of creating a Java programming language was to convert it into a portable, simple and secure programming language. In addition, there are also excellent features that play an important role in the popularity of this language. Java functions are also referred to as Java buzzwords.
Below is a list of the most important Java functions.
Compiled and interpreted: Has a program of compiled functions and interpreters java. First, it is compiled and then it must be interpreted. First of all, the java program is then compiled, after compilation, it creates bytecodes instead of a machine language.
Then, after converting the bytecodes into machine language, it becomes the machine language using the interpreter. To run Java, you must first compile it, and then it must be an interpreter.
Regardless of the platform: Java is a platform. An independent java multimedia program can be easily moved because after compiling the Java bytecode, the code of the bytecode will be created on a different computer.
This is not necessary for computers that have the same operating system, in which Java code is created and executed after compilation of the Java program. We easily convert a java program to another computer for execution.
Object-oriented: We know that it is only the OOP language, which is the entire Java language code. It is written in classes and objects. For this function, Java is the most popular language because it is also compatible with reuse, maintenance, code, etc.
Robust and secure: Java code is robust and means that it first checks the reliability of the code before execution. When we try to convert the highest data type to the lowest, it checks the degradation of the code. Do not do it, so it’s called solid.
Of course when converting code from one computer to another, first check whether the virus has no effect on the code, or if the code contains a virus, and then the code will not work on your computer.
Simple, small and familiar: the simple language is that it contains many features of other languages such as C and C ++ and Java Removes complexity because you do not use pointers, storage classes or statements Go to Java and Java does not support multiple inheritances.
Interactive multiprocessing: Java uses multiprocessor technique execution means Like other language structures The code is divided into small ones, as are you convert Java code is divided into smaller parts that are executed by Sequence java and Timing Manner This is the so-called multiprocessor . In this program, java is divided into small parts made by the java compiler. Java is called interactive because Java code also supports CUI as well as GUI programs.
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Dynamic and extensible code: Java has dynamic and expandable code means using OOPS java ensures inheritance and using inheritance we re-use predefined code, and also use all integrated functions of java and classes
Distributed: Java is a dispersed language, which means that the program can be designed to work in computer networks. Java provides an extensive library of classes for communication, using TCP / IP protocols such as HTTP and FTP. Thanks to this, creating network connections is easier than in C / C ++. You can read and write objects on remote sites via the URL as easily as the developers are accustomed to reading and writing data to and from the file. This helps developers in remote locations collaborate on the same project.
Secure: Java was designed with security in mind. Because Java is intended to be used in network environments / distributors, it implements several security mechanisms to protect it against malicious code that might attempt to invade its file system.
For example: the absence of pointers in Java makes it impossible for applications to access memory locations without proper authorization, since the memory allocation and reference model are completely opaque for the programmer and completely controlled by the time platform of underlying execution.
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Neutral architecture: One of the key characteristics of Java that makes it different from other programming languages is a neutral architecture (or independent platform). This means that programs written on one platform can run on any other platform without having to retype or recompile them. In other words, follow the “write once run anywhere” approach.
Java programs are compiled in a byte code format that does not depend on the architecture of any machine, but can be easily translated to a specific machine through a Java Virtual Machine (JVM) for that machine. This is a significant advantage when developing applets or applications that are downloaded from the Internet and are needed to run on different systems.
Portable: the portability actually comes from the neutrality of the architecture. In C / C ++, the source code can be executed slightly differently on different hardware platforms because of how these platforms implement arithmetic operations. In Java, it has been simplified.
Unlike C / C ++, in Java, the size of the primitive data types is independent of the machine. For example, an int in Java is always a 32-bit integer, and float is always a 32-bit IEEE 754 floating-point number. These consistencies make Java programs portable between different platforms, such as Windows, Unix and Mac.
Interpreted: unlike most programming languages that are fulfilled or interpreted, Java is both fulfilled and interpreted. The Java compiler translates a java source file into byte codes and the Java interpreter executes the translated byte codes directly on the system that implements Java. Virtual machine. These two steps of compilation and interpretation allow a thorough verification of the code and a better security.
High performance: Java programs are compliant with the portable intermediate format known as byte codes, instead of with native machine-level instructions and JVM executes Java byte code. Any machine on which it is installed. This architecture means that Java programs are faster than programs or scripts written in purely interpreted languages, but slower than C and C ++ programs that compile to native machine languages.
Although in early versions of Java, the interpretation of byte code resulted in slow performance, but the advanced version of JVM uses the technique of compliant compilation and Just in Time (JIT) which improves performance by converting Java byte codes into instructions of a native machine on the fly.
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