java语言08(java类库介绍)（Java language 08 (Java class library)）.doc

java语言08(java类库介绍)(Java language 08 (Java class library))
This paper is contributed by Sammy_Carter
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Introduction of Java class library
Teaching objective
The master grasps mon usage of the class and learns to access the technical documentation of Java to use the rich class library of Java
The structure of Java class library
Class libraries are Java API, which are collections of standard classes that have been provided by the system. In the program design, reasonable and full use of library provides classes and interfaces, can not plete string processing, graphics, network application, mathematical calculation and other aspects of the work, but also can greatly improve the efficiency of programming, the program concise, easy to understand.
The classes and interfaces in the Java class library are mostly encapsulated in specific packages, each of which has its own functions.
Package name
.* .* .* .* .* .* .*
major function
For the creation of applet requires all classes for the creation of user interface and graphics, image rendering and management provides the development of Java Beans needs all the classes provided by data flow, and the sequence of the object file system to achieve the system input and output of the Java programming language basic class library provides a simple integer arithmetic and basic decimal arithmetic the function provides remote method calls related to all the class provides for the realization munication application all class provides the design work security solution needs some class provides access to and from the Java standard data types included in an independent way to deal with natural language text, date, number and message typ