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Question
what is difference between throw and throws in exception?
 Question Submitted By :: Core-Java
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
"throw" is used to handle user-defined exception.
JVM handles the exceptions which are specified by "throws"
 
Is This Answer Correct ?    258 Yes 50 No
Neema
 
Answer
# 2
throws is used to throw an exception from the method
without handling that exception where as 'throw' is used
to throw the exception to catch block and handle it.
 
Is This Answer Correct ?    121 Yes 77 No
Pavithra
 
 
 
Answer
# 3
hi pavitra u r nswer is wrong 
Is This Answer Correct ?    63 Yes 23 No
Shiva
 
Answer
# 4
In Throws, what ever the exception you are declaring are
handle by JVM. If it is a user defined exception in throws
block, JVM doesn't know when to throw that exception. For
this purpose we use Throw for a certain conditions/logic to
throw these user defined exceptions.

I think the above makes sense.
 
Is This Answer Correct ?    45 Yes 5 No
Chandra Sekhar
 
Answer
# 5
throws:
Method capable of raising an exception but not handling the
same. i.e to say no Try Catch block is implemented in the
Method, to handle the exception.
The callers should create the Try Catch Block to safeguard
against the exception.
If the above is not followed it would result in Compilation
errors.

throw:
The method that raises the exception also handles the same
in its Catch block.
If unhandled the exception can also be handles by the
Callers Try Catch Block.
Hope this makes sense.
 
Is This Answer Correct ?    44 Yes 10 No
Anu Mathew
 
Answer
# 6
throws --> throws declare that it throws the exception to
the calling method.

throw --> it is surrounded by the try catch block actually
it does the work, of throwing the exception.

For Example:

public void testMethod() throws BusinessException
{
try
{
}
catch(Exception exe)
{
// catch all the exceptions and provide some meaningful
message
throw BusinessException("An error occured while
trying to connect to DB");
}

}
 
Is This Answer Correct ?    43 Yes 12 No
Raj
 
Answer
# 7
throws keyword is used 2 delegate the responsibility of
exception handling 2 caller method where as throw keyword
used 2 hand over the creted customised excetion object 2
jvm 2 handle the excepion.
 
Is This Answer Correct ?    33 Yes 7 No
Srinath
 
Answer
# 8
throw- means user defined exception. we want throw manually
throw the exception.
throws- means jvm going to take all exception.
 
Is This Answer Correct ?    33 Yes 10 No
Velayutham
 
Answer
# 9
throw is used for to through exception system explicitly,and
throws is u sed for to throws exception means throws
ioexception and servletexception and etc.........
 
Is This Answer Correct ?    41 Yes 29 No
Shiva
 
Answer
# 10
throw : throw is used to throw exception by user whenever he
feels to throw exceptions. throw is used to throw
either user defined or runtime exception.
for ex : throw new MyException(), here MyException
is user written exception.
throw new NullPointerException(), here
NullPointerException is RuntimeException.

throws: throws is used by the method to throw exception to
the calling method. And method itself does not able
to handle it so it throws to calling method.
 
Is This Answer Correct ?    10 Yes 0 No
Raju
 

 
 
 
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