Externalization

This blog is about externalization and what is the reason we should go for externalization. How writeExternal() and readExternal() works. The difference between serialization and externalization is also explained as part of this blog.
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ClassNotFoundException vs NoClassDefFoundError

The most confusing, unknown and much discusses exceptions in Java is ClassNotFoundException and NoClassDefFoundError. This is a common question that you very often face in a Java Interview irrespective of interview level. Here I covered at a greater detail about the reason or circumstances under which we see these tw...
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Array List

Arraylist is the implementation class given for the List interface .It has some predefined methods . In this blog we can understand how to use these predefined methods and under which circumstances we should go for ArrayList. We can also understand under which data structure ArrayList works and how it works .
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