What are the advantages of JAVA?

Java technology has the following advantages: simplicity, object-oriented, distributed, interpretation and execution, robustness, security, architecture neutrality, portability, high performance, multithreading and dynamics.

1. Simple

Java language is an object-oriented language, which provides the most basic method to complete the specified tasks. Only by understanding some basic concepts, it can be used to write applications suitable for various situations. Java omits vague concepts such as operator overloading and multiple inheritance, and greatly simplifies the memory management of programmers by realizing automatic garbage collection. In addition, Java is also suitable for running on small computers. Its basic interpreter and class support is only about 40KB, and the support of standard class libraries and threads is only about 2 15KB.

2. Object-oriented

The design of Java language focuses on objects and their interfaces, providing a simple class mechanism and a dynamic interface model. The object encapsulates its state variables and corresponding methods, realizing modularity and information hiding; Class provides the prototype of the class, and through the inheritance mechanism, subclasses can use the methods provided by the parent class to realize code reuse.

Step 3 distribute

Java is a network-oriented language. The class library it provides can handle TCP/IP protocol, and users can easily access other objects on the network through URL addresses.

4. robustness

When compiling and running programs, Java should check possible problems to eliminate errors. It provides automatic garbage collection for memory management to prevent programmers from making mistakes when managing memory. At compile time, through the integrated object-oriented exception handling mechanism, Java prompts possible but unhandled exceptions to help programmers make correct choices and prevent system crashes. In addition, Java can also catch many common errors in type declarations at compile time to prevent mismatches in dynamic runtime.

5. Security

Java used in network and distributed environment must prevent virus intrusion. Java does not support pointers, and all accesses to memory must be realized through instance variables of objects, thus preventing programmers from accessing private members of objects through deceptive means such as Trojan horses and avoiding errors that are easy to occur in pointer operation.

6. Building neutrality

The Java interpreter generates bytecode instructions that are independent of the architecture. As long as the Java runtime system is installed, Java programs can run on any processor. These bytecode instructions correspond to representations in the Java virtual machine. After the Java interpreter gets the bytecode, it converts it so that it can run on different platforms.

7. Lightweight

Platform-independent features enable Java programs to be easily transplanted to different machines on the network. At the same time, Java's class libraries also realize the interface with different platforms, which makes these class libraries portable. In addition, the Java compiler is implemented in Java language, and the Java runtime system is implemented in standard C language, which makes the Java system itself portable.

8. Explain the implementation

The Java interpreter directly interprets and executes Java bytecode. Byte code itself carries a lot of compile-time information, which makes the connection process easier.

9. High performance

Different from other languages that explain execution, such as BASC and TCL, the design of Java bytecode makes it easy to directly convert it into machine code corresponding to a specific CPU, thus achieving higher performance.

10. Multithreaded operation

The multithreading mechanism enables applications to execute in parallel, and the synchronization mechanism ensures the correct operation of data. By using multithreading, programmers can use different threads to complete specific behaviors without adopting the global event cycle mechanism, so it is easy to realize real-time interactive behaviors on the network.

1 1. Dynamic

The design of Java makes it suitable for the ever-developing environment. You can freely add new methods and instance variables to the class library without affecting the execution of user programs. Moreover, Java supports multiple inheritance through interfaces, which makes it more flexible and extensible than strict class inheritance.