wood burning stoves 2.0*
The moose likes Beginning Java and the fly likes throw and throws!! Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


Win a copy of Android Security Essentials Live Lessons this week in the Android forum!
JavaRanch » Java Forums » Java » Beginning Java
Bookmark "throw and throws!!" Watch "throw and throws!!" New topic
Author

throw and throws!!

Brian Smith
Ranch Hand

Joined: Oct 26, 2002
Posts: 232
hi folks,
could you please explain me what's the difference between throw and throws? what is a particular situation that each one these is used?
thanks.
Maulin Vasavada
Ranch Hand

Joined: Nov 04, 2001
Posts: 1871
hi
throw is a "verb" meaning it will throw the specified exception when the code is executed.
throws is just a declaration that says "the code might throw the specified exception at runtime".
now, usage of throw would be,
if you have a class that does division of two integer numbers then in your code you can write like,
public double divide(int i,int j) throws DivideByZeroException {
if ( j == 0 )
throw DivideByZeroException("You should better practice math");
return i/j;
}
here, throw will actually throw the exception when j==0 as we should not try to divide by zero.
BUT the throws will declare the method as "it can throw the exception" so the using class knows what can go wrong while using the divide() method.
regards
maulin
 
jQuery in Action, 2nd edition
 
subject: throw and throws!!
 
Similar Threads
throw throws
diff b/w Throw and Throws
Difference
throws and throw
Throws and throw