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Types of Exception..

There are mainly two types of exceptions: checked and unchecked where error is considered as unchecked exception. The sun Microsystems says there are three types of exceptions:

Checked Exception

Let's see an example for better clarity.


import java.io.*;
class CheckedDemo
public static void main(String args[])
PrintWriter pw=new PrintWriter("f.txt");


unreported exception FileNotFoundException; must be caught or declared to be thrown

Here when we are compiling this program, the compiler generated a report which represents that there may be a chance FileNotFoundException arises at run time if the welcome.txt file is not found. So in this way the compiler gave this message to the programmer. This is known as checked exception.

Unchecked Exception

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