- ArithmeticException It is thrown when an exceptional condition has occurred in an arithmetic operation. - ArrayIndexOutOfBoundsException It is thrown to indicate that an array has been accessed with an illegal index. The index is either negative or greater than or equal to the size of the array. - ClassNotFoundException This Exception is raised when we try to access a class whose definition is not found - FileNotFoundException This Exception is raised when a file is not accessible or does not open. - IOException It is thrown when an input-output operation failed or interrupted - InterruptedException It is thrown when a thread is waiting, sleeping, or doing some processing, and it is interrupted. - NoSuchFieldException It is thrown when a class does not contain the field (or variable) specified - NoSuchMethodException It is thrown when accessing a method which is not found. - NullPointerException This exception is raised when referring to the members of a null object. Null represents nothing - NumberFormatException This exception is raised when a method could not convert a string into a numeric format. - RuntimeException This represents any exception which occurs during runtime. - StringIndexOutOfBoundsException It is thrown by String class methods to indicate that an index is either negative or greater than the size of the string

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

public class JavaExceptionExample{ public static void main(String args[]){ try{ //code that may raise exception int data=100/0; }catch(ArithmeticException e){System.out.println(e);} //rest code of the program System.out.println("rest of the code..."); }
} 

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.

public class JavaExceptionExample extends Exception{ public JavaExceptionExample(){ } public JavaExceptionExample(String s){ //String parameter which is the detail message of the exception. }
} 

Exception is an abnormal condition.
There are mainly two types of exceptions: checked and unchecked.
An error is considered as the unchecked exception. However, according to Oracle,
there are three types of exceptions namely:
1. Checked Exception
2. Unchecked Exception
3. Error