Loading ClassLoader like the JVM

Class loading subsystem is an important part of JVM virtual machine

Custom ClassLoader

The System class loader is divided into the following layers:
(1). Start the ClassLoader (Bootstrap ClassLoader): Will load/javahome/lib and the class library under the directory specified by-xbootclasspath, is the core Java API class file for starting the Java Virtual machine
(2). Extension ClassLoader (Extension ClassLoader): Load/javahome/lib/ext and class library under directory specified for Java.ext.dirs
(3). Application class Loader (application/System ClassLoader): Will load the class library specified under Classpath, or the classpath loader

What is the role of the parental delegation model?

Lazy loading with eager loading, says the object is loaded. And ClassLoader is talking about the loading of class. (Of course you can say that class is an object, but it's not the same thing)

http://blog.csdn.net/zq602316498/article/details/38902355

Loading ClassLoader like the JVM