类装入器的灵活性甚至允许动态地重新装入已修改的代码，同时应用程序继续执行。
The flexibility of class loaders even allows dynamic reloading of modified code while an application continues to execute.
通过动态链接装入器，将动态库映射进应用程序的可执行内存中。
The dynamic libraries are mapped into the application execution memory by the dynamic linking loader.
请注意，尽管您的代码可能没有直接引用供应商类，但供应商类也按名称被动态装入 JVM，因此在运行时它们一定要在您程序的类路径（classpath）中。
Note that while your source code may not reference vendor classes directly, the vendor classes are loaded into the JVM dynamically by name, so they must be in your program's classpath at run time.
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