this is a java program code please do the code what in the question says and please follow what in the question says and dont copy or plagarise from other sources PART I:Create an exception hierarchy of ExceptionA, ExceptionB and ExceptionC such that ExceptionBinherits from ExceptionA and ExceptionC inherits from ExceptionB. Write a test programto show that the catch block for supertype exception (ExceptionA) can catch all the subtype ex-ceptions (ExceptionB and ExceptionC). Print out a message such as "ExceptionB caught" toindicate which type of exception is caught. Name your class file as ExceptionHierarchy.java.Hints:1. To build the exception hierarchy, ExceptionA, ExceptionB and ExceptionC may haveempty body.2. You may use System.err.println("ExceptionB caught"); instead ofSystem.out.println("ExceptionB caught"); so that the message will be output inred color and in the format of exception messages. This is a more common way to output errormessages.PART II:Use the exception hierarchy from PART I to demonstrate that the order of catch block is importantif you want to specifically catch every exception in the same hierarchy. In other words, now youshould be able to catch subtype exceptions (ExceptionB and ExceptionC) separately ratherthan using one catch block of supertype exception (ExceptionA) as you did in PART I.You should define a method called some Method () that can throw all three exceptions randomly.To do this, generate a random integer of 1, 2 or 3 representing ExceptionA, ExceptionB orExceptionC respectively, and then throw the corresponding exception. Output the random numberin some Method () to show which type of exception is randomly generated. Invoke some Method ()in your test program and catch all three exceptions separately in three catch blocks. In each catchblock, print out a message such as "ExceptionA caught" to indicate which type of exception iscaught. Run your program a few times to make sure that some Method () may throw differentexception for different run and you are able to catch all three types of exceptions. Name your classfile as CatchDifferentExceptions. java.

The first question asks to create an exception hierarchy in Java with three custom exception…

Create an exception hierarchy of ExceptionA, ExceptionB and ExceptionC such that ExceptionB inherits from ExceptionA and ExceptionC inherits from ExceptionB. Write a test program to show that the catch block for supertype exception (ExceptionA) can catch all the subtype ex- ceptions (ExceptionB and ExceptionC). Print out a message such as "ExceptionB caught" to indicate which type of exception is caught. Name your class file as ExceptionHierarchy.java.

Create an exception hierarchy of ExceptionA, ExceptionB and ExceptionC such that ExceptionB inherits from ExceptionA and ExceptionC inherits from ExceptionB. Write a test program to show that the catch block for supertype exception (ExceptionA) can catch all the subtype ex- ceptions (ExceptionB and ExceptionC). Print out a message such as "ExceptionB caught" to indicate which type of exception is caught. Name your class file as ExceptionHierarchy.java.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Exception Handling Keywords

An exception is a situation or anomaly that occurs during the program execution which prevents the execution from continuing further. An exception is an unexpected behavior that can cause the program to stop abruptly.

Question

this is a java program code please do the code what in the question says and please follow what in the question says and dont copy or plagarise from other sources

PART I:
Create an exception hierarchy of ExceptionA, ExceptionB and ExceptionC such that ExceptionB
inherits from ExceptionA and ExceptionC inherits from ExceptionB. Write a test program
to show that the catch block for supertype exception (ExceptionA) can catch all the subtype ex-
ceptions (ExceptionB and ExceptionC). Print out a message such as "ExceptionB caught" to
indicate which type of exception is caught. Name your class file as ExceptionHierarchy.java.
Hints:
1. To build the exception hierarchy, ExceptionA, ExceptionB and ExceptionC may have
empty body.
2. You may use System.err.println("ExceptionB caught"); instead of
System.out.println("ExceptionB caught"); so that the message will be output in
red color and in the format of exception messages. This is a more common way to output error
messages.
PART II:
Use the exception hierarchy from PART I to demonstrate that the order of catch block is important
if you want to specifically catch every exception in the same hierarchy. In other words, now you
should be able to catch subtype exceptions (ExceptionB and ExceptionC) separately rather
than using one catch block of supertype exception (ExceptionA) as you did in PART I.
You should define a method called some Method () that can throw all three exceptions randomly.
To do this, generate a random integer of 1, 2 or 3 representing ExceptionA, ExceptionB or
ExceptionC respectively, and then throw the corresponding exception. Output the random number
in some Method () to show which type of exception is randomly generated. Invoke some Method ()
in your test program and catch all three exceptions separately in three catch blocks. In each catch
block, print out a message such as "ExceptionA caught" to indicate which type of exception is
caught. Run your program a few times to make sure that some Method () may throw different
exception for different run and you are able to catch all three types of exceptions. Name your class
file as CatchDifferentExceptions. java.

Process by which instructions are given to a computer, software program, or application using code.

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