Java API Documentation

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API (Application Programming Interface, application programming Interface)

are pre-defined functions that provide the ability of an application and developer to access a set of routines based on a piece of software or hardware without having to access the source code or understand the details of the internal working mechanism.

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When you run a Java program, the Java API class file used by the virtual machine loader's class file. All loaded class files (including those extracted from the application and from the Java API) and all loaded dynamic libraries (containing local methods) together form the entire program running on the Java Virtual machine. Before a platform can support Java programs, the functionality of the API must be explicitly implemented on this particular platform. To access local resources on the host, the Java API calls the local method. Because the Java API class file calls local methods, the Java program does not need to call them again. In this way, the Java API class file provides a Java program with platform-agnostic, standard interfaces for the underlying host. For Java programs, Java APIs have the same performance and predictable behavior regardless of the platform's internals. Because Java virtual machines and Java APIs are explicitly implemented on each particular host platform, Java programs themselves can become platform-independent programs.

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Because I am a rookie, and English is not good, so can only use the Chinese version of the "Java API" help document

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"JAVA API documentation Download 1.6 official Chinese version _jdk api-pc6 download Station"

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[Java Reference document]. Jdk_api_1_6_zh_cn. Chm_ free high-speed download | Baidu Cloud Network disk-Share Unlimited "

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Reference articles

"Java Api_ Baidu Encyclopedia"

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Java API Documentation