Java is an object-oriented programming language. It is a widely used computer programming language. It has the characteristics of cross-platform, object-oriented, and generic programming. It is widely used in enterprise-level Web App development and mobile app development. [Recommended study: java course]
Java not only absorbs the various advantages of the C language, but also abandons the concepts such as multiple inheritance and pointers that are difficult to understand in C. Therefore, the Java language has functions Powerful and easy to use. As a representative of static object-oriented programming languages, Java language perfectly implements object-oriented theory and allows programmers to perform complex programming with an elegant way of thinking.
Java has the characteristics of simplicity, object-oriented, distributed, robustness, security, platform independence and portability, multi-threading, and dynamics. Java can write desktop applications, Web applications, distributed systems and embedded system applications, etc.
Java is different from general compiled languages or interpreted languages. It first compiles the source code into bytecode, and then relies on virtual machines on various platforms to interpret and execute the bytecode, thus having the cross-platform feature of "write once, run anywhere". In the early JVM, this reduced the running efficiency of Java programs to a certain extent. However, after the release of J2SE1.4.2, the running speed of Java has been greatly improved.
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