what are exception classes in java code example

Example 1: exception in java

In java exception is an object. Exceptions are created when an abnormal 
situations are arised in our program. Exceptions can be created by JVM or 
by our application code. All Exception classes are defined in java.lang. 
In otherwords we can say Exception as run time error. I use try & catch blocks 
to handle any exceptions in my code. 
  I am familiar with major checked and unchecked exceptions and 
  handle it accordingly to make my code execution smooth

Example 2: what is exception in java

An exception is an event, which occurs during the execution of a 
program, that disrupts the normal flow of the program's instructions.