What is difference between java.lang .Class and java.lang.ClassLoader? What is the hierarchy of ClassLoader

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Sarva Rayudu

  • Oct 31st, 2005
 

A Class is nothing but a byte code which will be generated when you compile a java file. And it is required to execute your java file.  Where as a ClassLoader is also a class which loads the class files into memory in order for the Java programs to execute properly. The hierarchy of ClassLoaders is:

  1. Bootstrap ClassLoaders
  2. Extensive ClassLoaders
  3. System Classpath ClassLoaders
  4. Application ClassLoaders or (EAR ClassLoaders)
  5. EJB ClassLoaders or (JAR ClassLoaders)
  6. WAR ClassLoaders.

Sarva Rayudu

  • Oct 31st, 2005
 

The hierarchy of ClassLoaders is:

  1. Bootstrap ClassLoaders
  2. Extensive ClassLoaders
  3. System-classpath ClassLoaders
  4. Application ClassLoaders or (EAR ClassLoaders)
  5. EJB ClassLoaders or (JAR ClassLoaders)
  6. WARClassLoaders.

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mandyjoshi

  • Nov 11th, 2005
 

Class 'java.lang.Class' represent classes and interfaces in a running Java application. JVM construct 'Class' object when class in loaded. Even primitive data types have 'Class' object.

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