created: 12/12/99; revised: 01/22/00, 07/20/02, 05/27/03, 01/29/06
CHAPTER 44 — The do Statement
Loops are so important, and are so common in programs,
that there are several Java language features
for implementing them.
You have already seen while loops
and for loops.
This chapter looks at do loops.
A programming language needs to have
only one general looping method.
In Java, the
while statement can be used to implement any loop.
However,
as we have seen,
the for statement is very
convenient.
The do loop is occasionally convenient.
Of the three looping statements, it is used the least.
Some programmers prefer not to use it at all.
Chapter Topics:
- The
dostatement - Bottom-driven loops
- Dangers of bottom-driven loops
The do statement is not part
of the AP (Advanced Placement)
computer science test given to
high school students in the US.
It is not used in the chapters that
follow this one.
QUESTION 1:
There are several looping statements in Java, although only one (any one of them) is logically necessary.
