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This article mainly explains "what advantages Java programming language wants to have for other programming". The explanation in this article is simple and clear and easy to learn and understand. please follow the editor's train of thought to study and learn what advantages Java programming language wants to have for other programming.

How is the Java programming language better than other programming?

Java has removed many C++ features that are rarely used, difficult to understand, and easy to confuse. The main features of deletion include operator overloading, multiple inheritance, and extensive automatic forcing of the same type. Compared with C++, the Java language also provides overloaded functions, but the objects it overloads are functions, not variables or operators. One of the goals of Java is to assist in the development of software that runs smoothly on small machines independently. The basic interpreter and object class support of Java takes up about 40KB space, while the addition of basic standard libraries and thread support requires about 175KB. Small size is very important for use in embedded systems, and it is because of this that Java can be easily downloaded through the network. Let's talk about the advantages of Java programming, which is why it is better than other programming.

(1) Java is robust

The goal of Java is to help developers build reliable programs in all aspects. Java emphasizes that developers can check for possible problems at the early stage of design, and then conduct dynamic checks and eliminate errors that are likely to occur. The advantage of the C++ language is that it allows in-depth checking at compile time to detect errors in advance. One of the biggest differences between Java and CumberCure + is that Java has a model that eliminates the possibility of memory being overwritten and data corrupted. Instead of using pointer calculations, Java provides a true array of arrays. This allows the program to perform subscript checking, but it does not allow the conversion of an integer to a pointer.

(2) Java is an object-oriented language

Object-oriented is one of the once popular terms in the industry. However, it is determined to be a strong design feature that leads to clear interface definitions and allows developers to build reusable software parts.

(3) Java is a distributed language

Java has a wide range of runtime libraries that can easily handle the TCP/IP protocol, such as HTTP and FTP class libraries. This makes it easier to establish a network connection in Java than in C or C++. Java applications can open and access objects over the network with URL, which is as simple as accessing a local file system.

(4) the security of Java

Java is designed to be able to be used in network / distributed computing environments. To this end, Java places great emphasis on security to ensure that systems are virus-free and will not be compromised. The verification technology of Java is based on public key encryption. There is a strong interaction between bond robustness and security. For example, changes in the meaning of pointers make it impossible for applications to forge object structure access rights, or to access those that do not have access rights in objects? data. This is tantamount to closing the door and putting an end to the invasion of most viruses.

(5) the neutral structure of Java.

Java is designed to support web applications. Generally speaking, the network is made up of many different platform systems, including various CPU and operating system structures. In order for a Java application to execute anywhere on the network, its compiler will generate a structurally neutral object file format. The compiled code can be executed on a variety of different processors that provide the Java runtime system. This neutral structure of Java is not only helpful for network applications, but also suitable for the circulation of single system software.

Structural neutrality is the most important part of ensuring that the program is portable, but there are many other conditions that must be met. Unlike C++, there is no statement in the Java specification that is dependent on the structure of the machine. It specifies the size of the basic data type and the execution behavior of its arithmetic operands. For example, "int" represents a signed binary complement 32Bit integer, and "float" represents a 32BitIEEE754 floating-point number. These choices work well in today's environment, as almost all CPU have these features. The program runtime is a part of the system, which defines some portable program interfaces. For example, it includes an abstract Windows class and provides an implementation of the class on Unix, Windows, and Macintosh platforms.

(6) High performance Java program

Although the performance of the solved bytecode is quite good, in some cases the program is required to achieve higher execution performance. Bytecode can be dynamically interpreted as machine code that executes an application-specific CPU. For programmers who are used to using general compilers and dynamic manned vehicles, this is a bit like putting the final machine code generator into the dynamic loader.

The byte code format has been designed to take into account the generation of machine code, so the actual machine code generation program is quite simple. The generated machine code is valid, the compiler automatically allocates registers, and some optimizations are made during the generation of bytecode. When we execute the solution code on a SunMicrosystemSPARCStation10, it achieves a rate of 300,000 function calls per second. The speed performance of converting bytecode to machine code is almost the same as C or C++, which generates machine object code directly.

(7) Java is interpreted and executed.

The Java resolver can interpret and execute Java bytecode directly on any machine that has migrated the interpreter. In addition, because the linking process tends to be incremental and lightweight, the program development is faster and more sophisticated.

(8) Java's support for multithreading

Java has a complex set of synchronization basic units based on the widely used C.A.R.Hoare monitor and conditional variable maps. When these concepts are integrated into the language, they become easier to use and more robust. Most of this fusion method comes from Xerox's Cedar/Mesa system.

Other benefits of multithreading include better interactive response and real-time running. However, this will be limited by the underlying platform: the Java runtime environment that executes independently has a good real-time execution ability, while if it is executed on other systems such as Unix, Windows, Macintosh or WindowsNT, the real-time response ability will be affected because of the underlying platform.

Thank you for your reading, the above is the content of "what advantages the Java programming language wants for other programming". After the study of this article, I believe you have a deeper understanding of what advantages the Java programming language wants for other programming, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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