java is an object-oriented language applicable to any programming language?
java language is an object-oriented software network environment suitable for the development of the programming language.
Java is an object-oriented programming language, not only absorbed the various advantages of the C ++ language, but also abandoned the multiple inheritance in C ++ incomprehensible concepts such as pointers, so the Java language has a powerful and easy to use two features. Java language as a static representative of object-oriented programming languages, object-oriented to achieve an excellent theory, it allows programmers to elegant way of thinking complex programming.
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The main features of the Java language:
1. Cross-platform
The so-called cross-platform, means that the software can not be bound by the computer hardware and operating systems and operating normally in any computer environment. This is the trend of software development and programming staff to pursue. Say this is because many types of computer hardware, operating systems also vary, different users and different companies have their own computer environment preferences, and the software in order to run properly in these different environments, it needs to be independent these platforms.
In the Java language, Java virtual machine that comes to achieve a good cross-platform. Java source code is compiled after the binary bytecode are platform-independent, but may be one kind of machine code instructions recognized by the Java virtual machine. Java Virtual Machine bytecode to provide an underlying hardware platform and operating system of barriers that have cross-platform Java language.
2. Object-Oriented
The object is a primary particle size refers to the object, which contains the properties and methods oriented. Description of the object with the expression properties, and to manipulate the object by using the method. Object-oriented technology makes application development easier to use, saving code. Java is an object-oriented language, object-oriented also inherited many benefits, such as code extension, code reuse and so on.
3. Security
Security can be divided into four levels, namely, language-level security, safety at compile time, runtime security, executable code security. Refers to the Java language-level security data structure is complete object, a data type through these packages having security. To compile-time checking Java language and semantics to ensure that for each variable a corresponding value, generating a compiled Java classes. Java Runtime class loader needs to load the class, and can then run through the bytecode verifier checksum. Java classes used on the network, its authority has been set up to ensure that the user access security.
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