Dynamic Loading of Class and Class reload

After JVM is started, update the class and load the new class into the runtime environment.

There are currently two methods:

1) Reload classloader to control class loading and use polymorphism for dynamic behavior operations

2) The other is Dynamic Replacement class. Javaagent Loading Mechanism Analysis

1) the disadvantage is that objects must be built using reflection, and the returned object type must be classes loaded in systemclassloader.

Org. Apache. commons. beanutils. converters. classreloader,

This cannot dynamically reload the classes in systemclassloader. It can be seen that the class security mechanism of JVM is still very strict.

Http://www.cnblogs.com/totti19841106/archive/2008/12/25/1362420.html

Http://vivisidea.iteye.com/blog/662620

2) Dynamic Loading of Java agent (not yet studied)

Http://nijiaben.iteye.com/blog/1847212

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