Shulou(Shulou.com)06/02 Report--

Today, I would like to talk to you about what is the characteristics of Java language, many people may not know much about it. In order to make you understand better, the editor has summarized the following content for you. I hope you can get something from this article.

Java is an object-oriented programming language, which absorbs the advantages of Smalltalk and C++, and adds other features, such as supporting concurrent programming, network communication, and multimedia data control. The main features are as follows:

The 1.Java language is simple.

The Java language is simple and Java is designed as close to C++ as possible to ensure that the system is easier to understand, but Java removes many rarely used, incomprehensible, and confusing C++ features such as operator overloading, multi-inheritance, and automatic type casting. In particular, the Java language does not use pointers and provides an automatic garbage collection mechanism, so programmers do not have to worry about memory management.

2.Java language is object-oriented

Java is an object-oriented language, which provides primitives such as classes, interfaces and inheritance. For simplicity, Java only supports single inheritance between classes, but supports multiple inheritance between interfaces, and supports implementation mechanisms between classes and interfaces.

The 3.Java language is distributed

Java language is very suitable for developing distributed computing programs because it has powerful and easy-to-use networking capabilities and has a network application programming interface (java.net) in the basic Java API. It provides class libraries for network application programming, including URL, URLConnection, Socket, ServerSocket and so on. Java applications can access remote objects through URL as if they were local file systems. Java's RMI (remote method Activation) mechanism is also an important means of developing distributed applications.

The 4.Java language is robust

Java language has the characteristics of strong typing mechanism, exception handling, automatic garbage collection and so on, which ensures the stability and robustness of the program. Discarding pointers and using security checking mechanisms make Java more robust.

5.Java language is secure.

Java language is designed to be used in network / distributed computing environment. For this reason, Java language places great emphasis on security to prevent malicious code attacks. In addition to Java language discarding pointers to ensure the safe use of memory, Java language also has a security mechanism for classes downloaded through the network, such as allocating different space to prevent replacing local classes of the same name and bytecode checking. It also provides a security management mechanism to set up security sentinels for Java applications.

The 6.Java language is architecture neutral

Java programs (files with the suffix .java) generate an architecturally neutral object file format (files with the suffix .class) through the Java compiler, that is, when the Java compiler is pseudo-compiled, it generates a neutral bytecode file that is independent of any computer system. This approach is suitable for heterogeneous network environment and software distribution.

The 7.Java language is portable

Architectural neutrality is the most important part of ensuring program portability. In addition, Java strictly defines the length of each basic data type. The Java system itself also has strong portability. The Java compiler is implemented in Java language, and the running environment of Java is implemented in ANSI C.

8.Java language is interpretive.

Java language is an interpretive language, which can interpret Java code and execute Java bytecode by running Java interpreter on different platforms to achieve "write once, run everywhere".

9.Java is of high performance.

Java is indeed high-performance compared to those interpreted high-level scripting languages. In fact, the running speed of Java is getting closer and closer to that of C++ with the development of JIT (Just-In-Time) compiler technology.

10.Java language is multithreaded.

One of the important features of Java language is that it supports multi-threading mechanism. Many operating systems regard threads as basic execution units, such as windows NT,windows 95. The language itself supports multithreading mechanism, which can bring convenience for programmers in using multithreading function.

The 11.Java language is dynamic

In many ways, Java is a more dynamic language than C or C++. Adapting to the dynamic environment is one of the design goals of Java language, which is mainly manifested in two aspects: first, Java language can simply and intuitively query runtime information; second, new code can be added to a running program.

After reading the above, do you have any further understanding of what are the characteristics of Java language? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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