Class loader in java

Class loader in java:

·          Responsible for loading appropriate classes in the JVM at the runtime.

·          When the JVM starts, initially only the class file is loaded and other classes are loaded as and when required by the JVM.

a)   bootstrap :         loads the key classes like i18.jar,rt.jar

b)   ExtClassLoader :    loads the class which is there in lib/ext folder

c)   System: loads classes from system classpath which is set by CLASSPATH variable.