<div>
Any simple example on this?
</div>


<div>
exactly what I said:<br />
<br />
public void doSomethingDangerous() throws DataAccessException{<br />
<br />
&nbsp; &nbsp; try{<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ...something that can cause a SQLException<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}catch(SQLException e){<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; throw new DataAccessException(e);<br />
&nbsp; &nbsp; &nbsp; &nbsp; }<br />
<br />
}
</div>


<div>
What's dataaccessexceptiob?I never heard? Is it custom exception?
</div>


<div>
Ok, lets call it Guddi9Exception.
</div>


<div>
<blockquote>
If you have a method that declares a data access exception for example in its throws clause.<br />
<br />
If the body of the method catches a SQLException, you will probably want to wrap that in data access exception before throwing it out to the caller. <b>You would not want the caller to handle SQLException</b>.
</blockquote>
<br />
we would want caller to handle data access exception instead right?
</div>


<div>
Yes. The caller may decide the handle it or let it bubble up the call stack and simply do nothing
</div>


<div>
<div class="content wysiwyg-content">
Hi,<br />
<br />
When do we rethrow exception in catch block with different exception?<br />
<br />
Say <br />
<br />
<br />
class ExceptionClass<br />
{<br />
public static void main(String[] args){<br />
try {<br />
System.out.println(9/0);<br />
}<br />
catch(ArithmeticException e) {<br />
throw new NullPointerException();<br />
}<br />
}<br />
}<br />
<br />
I wonder whether we can do like above and in what situations we do like above?<br />
please advise
</div>
</div>


Hi,

When do we rethrow exception in catch block with different exception?

Say 


class ExceptionClass
{
public static void main(String[] args){
try {
System.out.println(9/0);
}
catch(ArithmeticException e) {
throw new NullPointerException();
}
}
}

I wonder whether we can do like above and in what situations we do like above?
please advise

When do we rethrow exception in catch block with different exception

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Java

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