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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.
What is JDBC exactly? Describe the steps required to execute a SQL query using JDBC.
object
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write complete application to play game tictactoe
What are three ways in which a thread can enter the waiting state ?
Problem statement Part 1 Write an aspect that counts different kinds of method calls in a Java program. Your aspect should meet the following requirements: The aspect should ma
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1. In Java (and OOP), Inheritance includes the concept of super class that is parent class and sub class that is derived class. Explain What is a super class in Java? What is a sub
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