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Figure 12 . Output from the exception handler.
In exception handler, get the message 3

When the catch block finishes execution ...

When the code in the catch block has completed execution, control is transferred to the first executable statement following the catch block as shown in Listing 9 .

Listing 9 . Code following the catch block.
System.out.println( "Out of catch block");}//end main }//end class Excep16

That executable statement is a print statement that produces the output shown in Figure 13 .

Figure 13 . Output from code following the catch block.
Out of catch block

Complete program listing

A complete listing of the program named Excep16 is shown in Listing 10 .

Listing 10 . Complete program listing for Excep16 .
/*File Excep16.java Copyright 2002, R. G. BaldwinIllustrates defining, throwing, catching, and processing a customexception object that contains a message.Tested using JDK 1.4.0 under Win 2000 The output is:Processing data for cnt = 0 Processing data for cnt = 1Processing data for cnt = 2 In exception handler, get the message3 Out of catch block**************************************/ //The following class is used to// construct a customized exception // object containing a messageclass MyException extends Exception{ MyException(String message){//constrsuper(message); }//end constructor}//end MyException class //===================================//class Excep16{//controlling class public static void main(String[] args){try{ for(int cnt = 0; cnt<5; cnt++){ //Throw a custom exception, and// pass message when cnt == 3 if(cnt == 3) thrownew MyException("3"); //Transfer control before// processing for cnt == 3 System.out.println("Processing data for cnt = " + cnt);}//end for-loop }//end try blockcatch(MyException e){ System.out.println("In exception handler, " + "get the message\n"+ e.getMessage()); }//end catch block//-------------------------------// System.out.println("Out of catch block"); }//end main

Summary

This module has covered many of the details having to do with exception handling in Java. By now, you should know that the use of exception handling isnot optional in Java, and you should have a pretty good idea how to use exception handling in a beneficial way.

Along the way, the discussion has included the following topics:

  • What is an exception?
  • How do you throw and catch exceptions?
  • What do you do with an exception once you have caught it?
  • How do you make use of the exception class hierarchy provided by the Java development environment?

What's next?

That concludes the "Essence of OOP" portion of the ITSE 2321 sub-collection. The series is continued in the ITSE 2317 sub-collection.

Miscellaneous

This section contains a variety of miscellaneous information.

Housekeeping material
  • Module name: Java OOP: Exception Handling
  • File: Java1630.htm
  • Published: 09/03/02
Disclaimers:

Financial : Although the Connexions site makes it possible for you to download a PDF file for thismodule at no charge, and also makes it possible for you to purchase a pre-printed version of the PDF file, you should beaware that some of the HTML elements in this module may not translate well into PDF.

I also want you to know that, I receive no financial compensation from the Connexions website even if you purchase the PDF version of the module.

In the past, unknown individuals have copied my modules from cnx.org, converted them to Kindle books, and placed them for sale on Amazon.com showing me as the author. Ineither receive compensation for those sales nor do I know who does receive compensation. If you purchase such a book, please beaware that it is a copy of a module that is freely available on cnx.org and that it was made and published withoutmy prior knowledge.

Affiliation : I am a professor of Computer Information Technology at Austin Community College in Austin, TX.

-end-

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
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Source:  OpenStax, Object-oriented programming (oop) with java. OpenStax CNX. Jun 29, 2016 Download for free at https://legacy.cnx.org/content/col11441/1.201
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