Is java the best language in the world?

Development languages should not comment on good and bad, and each development language has its own advantages.

Let's talk about eight advantages of JAVA

Eight advantages of Java programming language

Why does Java attract people's attention? Don't ... Right! This is the root of java:

1. Java is one of the most widely used network programming languages at present. It is simple, object-oriented, stable, platform-independent, interpretive, multi-threaded and dynamic.

2. Simple Java language Simple means that this language is both easy to learn and easy to use. Don't misunderstand simplicity as a dry language. You may agree that English is easier to learn than Arabic. But this doesn't mean that English can't express rich content and profound thoughts. Many literary Jaubert Prize works are written in English. If you have studied the C++ language, you will feel that Java is familiar, because the syntax of many basic sentences in Java is the same as that of C++, such as commonly used loop statements and control statements. However, don't misunderstand that Java is an enhanced version of C++, and Java and C++ are two completely different languages, each of which has its own advantages and will coexist for a long time. Java and C++ have become languages that software developers should master. If Java is simpler than C++ in terms of language simplicity, many confusing concepts in C++ are either abandoned by Java or implemented in a clearer and easier-to-understand way. For example, Java no longer has the concept of pointer.

3. Object-oriented object-based programming is more in line with people's thinking mode, making it easier for people to write programs. In real life, we are dealing with objects all the time. The pens we use, the bicycles we ride, the buses we ride, etc. Trucks, buses, cars, etc. that we often see will involve the following important physical quantities: the number of people that can be carried, the running speed, the power of the engine, the fuel consumption, the dead weight, the number of wheels, etc. In addition, there are several important functions, such as acceleration, deceleration, braking and turning. We can also call these functions methods they have, and physical quantities are their state descriptions. They can't be well described only by physical quantities or functions. In real life, we use these attributes and functions to give a conceptual motor vehicle class. A concrete car is an instance object of the motor vehicle class. Like other object-oriented languages, Java language introduces the concept of class, which is a template used to create objects, including the state description of the created objects and the definition of methods.

4. Platform independence is the biggest advantage of Java language. One of the main problems faced by programs written in other languages is that the change of operating system, the upgrade of processor and the change of core system resources may lead to errors or failure of programs. Java's virtual machine has successfully solved this problem, and the programs written in Java can run correctly on any computer with Java virtual machine JVM installed. Sun Company has achieved its own goal of writing once and running everywhere.

5. Explanatory language We know that languages such as C and C++ can only compile specific CPU chips to generate machine code, and the operation of this code is related to specific CPU. For example, in C language, we have all encountered the following problems: the value of int variable is 1, so what is the output result of the following code? printf (teasing %d, %d, x, x=x+1) If the calculation order of the above statements is from left to right, the result is 1, 11. However, some machines will calculate from right to left, so the result is 11. 11.Java is not like C+. Byte code is a file that is very close to machine code and can be interpreted and executed on any system that provides a Java virtual machine JVM. Java is designed to interpret and execute a program, that is, to translate and execute a sentence without producing the whole machine code program. If there are no mistakes in the translation process, it will continue until the end, otherwise it will stop execution at the wrong place. If the same program is interpreted and executed, its running speed is usually slower than that compiled into executable machine code. However, for Java, there is not much difference between them. After careful design, Java bytecode can easily be directly converted into high-performance local machine code by JIT just-in-time compilation technology. Sun Company provided such a bytecode compiler-JIT (just in time) in Java 2 release, which is a part of Java virtual machine. Java operating system still has platform independence while providing JIT, so it is no longer contradictory for Java to be efficient and cross-platform. If the Java program is compared to teasing Chinese, bytecode is equivalent to teasing Esperanto, and Esperanto is not related to the specific teasing country. As long as this teasing country provides a teasing translation place, Esperanto can be translated into the local language quickly.

6. One of the features of multithreaded Java is its built-in support for multithreading. Multithreading allows multiple tasks to be completed at the same time. In fact, multithreading gives people the illusion that multiple tasks are being executed at the same time, because the current computer processor can only execute one thread at the same time, but the processor can switch between different threads quickly. Because the processor speed is very fast, it far exceeds the speed at which people receive information, so it gives people the feeling that multiple tasks are being executed at the same time. C++ has no built-in multithreading mechanism, so it is necessary to call the multithreading function of the operating system to design multithreaded programs.

7. security when you are going to download a program from the network, your biggest worry is that the program contains malicious code, such as trying to read or delete some important files on the local computer, or even that the program is a virus program. When you use a browser that supports Java, you can safely run Java Applet, a Java applet, without worrying about virus infection and malicious attempts. The Java applet will be limited to the Java running environment and will not be allowed to access other parts of the computer.

8. The basic unit of dynamic Java programs is classes, some of which are written by themselves, others are imported from class libraries, and classes are dynamically loaded at runtime, which makes Java dynamically maintain programs and class libraries in a distributed environment, unlike C++, when its class libraries are upgraded, the corresponding programs must be revised and compiled again.