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Java has two kinds of exceptions:
1. Checked exception: handled from java.lang.Exception but not java.lang.RuntimeException.
2. Unchecked exception: handled from java.lang.RuntimeException thrown by JVM.
EJB has two kinds of exceptions:
1. System Exception : is an unchecked exception produced from java.lang.RuntimeException. An EJBException is an unchecked exception, which is started from java.lang.RuntimeException.
2. Application Exception : is generic to an application and thrown because of violation of business rules. An Application Exception is a checked exception that is either described by the bean developer and does not import java.rmi.RemoteException.
A System Exception is given by the system and is not recoverable. Because the System Exceptions are unpredictable when they occur, the EJB container is the only one responsible for trapping the System Exceptions. The container usually wraps any RuntimeException in RemoteException, which subsequently puts thrown to the caller. In addition to intercepting System Exception the container can give the errors.
try { pa="weblog"; pas="weblog"; Connection c; Statement st;
It terminates execution of the block of statements in while or for loop & continues execution of the loop along with the next iteration. On the contrary to the break statement, con
The roster lets you keep track of the availability ("presence") of other users. A roster also allows you to organize users into groups such as "Friends" and "Co-workers". Other IM
What is the difference among session scope and request scope when saving formbean? Ans) When the scope is request, the values of formbean would be there for the current request.
In this exercise, I want you to generate password based on random number generator. Develop an application that keeps track of the URL, username and password. I have listed few st
What is 'public static void main (String args[ ] ) ' signifies? Access specifier is the 'public' keyword. 'static' keyword allows main() to called without instantiating
How to Returning Multiple Values From Methods ? It is not probable to return more than one value from techniques. You cannot, for example, return the licensePlate, speed and m
How can we define a computer screen? A computer screen is define as use to display output of computer to the user. Computer screen is consists of pixels.
Im not in the line of computer science.But i would like to have some knowledge about the computer language "JAVA".I aldredy learns the computer languages "C,C++".So kindly help me
Don''t know how to write this, can anyone help me? http://wikisend.com/download/660980/Moving Blobs.zip
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