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One author suggests that even the middle clause can be empty, but it isn't obvious to this author how the loop would ever terminate if there is noconditional expression to be evaluated. Perhaps the loop could be terminated by using a break inside the loop, but in that case, you might just as welluse a while loop.

The for-each loop

There is another form of loop structure that is often referred to as a for-each loop. In order to appreciate the benefits of this loop structure, you need to be familiar with Java collections and iterators,both of which are beyond the scope of this module.

As near as I can tell, there is nothing that you can do with the for-each loop that you cannot also do with the conventional for loop described above. Therefore, I rarely use it. You can find a description ofthe for-each loop on this Oracle website .

I don't plan to discuss it further in this module. However, before you go for a job interview, you should probably do some online research and learn about itbecause an interviewer could use a question about the for-each loop to trip you up in the Q and A portion of the interview.

The do-while loop

The do-while loop is another implementation of the loop pillar mentioned earlier . However, it differs from the while loop and the for loop in one important respect; it is an exit-condition loop.

An exit-condition loop

Java provides an exit-condition loop having the syntax shown in Figure 6 .

Figure 6 . Syntax of a do-while loop.
do { statements} while (conditional expression);

Behavior

The statements in the body of the loop continue to be executed for as long as the conditional expression evaluates to true.An exit-condition loop guarantees that the body of the loop will be executed at least one time, even if the conditional expressionevaluates to false the first time it is tested.

The break and continue statements

General behavior

Although some authors suggest that the break and continue statements provide an alternative to the infamous goto statement of earlier programming languages, it appears that the behaviors of the labeled break and labeled continue statements are muchmore restrictive than a general goto .

Unlabeled break and continue

The break and continue statements are supported in both labeled and unlabeled form.

First consider the behavior of break and continue in their unlabeled configuration.

Use of a break statement

The break statement can be used in a switch statement or in a loop. When encountered in a switch statement, breakcauses control to be passed to the next statement outside the innermost enclosing switch statement.

When break is encountered in a loop, it causes control to be passed to the next statement outside the innermost enclosing loop.

As you will see later, labeled break statements can be used to pass control to the next statement following switch or loop statementsbeyond the innermost switch or loop statement when those statements are nested.

Use of a continue statement

The continue statement cannot be used in a switch statement, but can be used inside a loop.

Questions & Answers

how can chip be made from sand
Eke Reply
are nano particles real
Missy Reply
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
Lale Reply
no can't
Lohitha
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
has a lot of application modern world
Kamaluddeen
yes
narayan
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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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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