JSP Exception Handling

Question 1

3 Types of Exceptions in JSP

Answer 1

• checked exception
• runtime exception
• error exception

Question 2

Checked Exceptions

Answer 2

It is an exception that is typically a user error or a problem that cannot be foreseen by the programmer.

Examples:

• FileNotFoundException
• IOException
• SQLException when there is an issue with the connectivity of the SQL database

Question 3

Runtime Exceptions

Answer 3

They are the ones that could have been avoided by the programmer. They are ignored at the time of compilation.

Examples:

• ArrayIndexOutOfBoundsException
• ArithmeticException
• NullPointer Exception

Question 4

Error Exceptions

Answer 4

They are the instances of the throwable class, and they are used in error pages.

Question 5

How to handle exceptions in JSP code?

Answer 5

• use exception object
• use JSTL tags for an error page
• use Try…Catch Block