How does it work : String MethdName (argument) throws Exception {}

Question

HI,
I am very new to Java. I was looking through some code written by some other developer.
the code looks like
String MethdName (argument) throws Exception {
// some code here
What it exactly means? Are we forcing this method to always throw an exception? or only if some exception occurs then it will throw the exception?
Regards,
Lucky

Answer 1

It doesnt throw exceptions always.
What this means is that if you code inside the method does use some API or function that throws exceptions when a particular condition is not met, you method would throw the same exception to it's caller. If you didn't add the throw exception clause in your method, you would have to try/catch the exception that would be thrown in your code.
Or else, your code won't compile.
Summary:
A method that throws an uncaught, checked exception must include a throws clause in its declaration.
Read this for some additional info:
[Java Exception Handling|http://ajaxweb.wikidot.com/java-exception-handling]
[Sun Java Tutorial - Exceptions|http://java.sun.com/docs/books/tutorial/essential/exceptions/index.html]