The Do Statement
The 'do-while' loop is a variation of the while loop. 'do-while' loops always execute at least once, whereas while loops may never execute.
1. The Daring 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
A programming language needs to have only one general looping method. The
while statement can be used to implement any type of loop. However, as we have seen, the
for statement often is convenient,
and also can be used to implement any type of loop.
do loop is occasionally convenient and can be used to implement any of the three types of loops. However, of the three looping statements, it is used the least. Some programmers prefer not to use it at all.
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.
- Bottom-driven loops
- Dangers of bottom-driven loops
There are several looping statements in Java, although only one (any one of them) is logically necessary.
Source: Bradley Kjell, http://programmedlessons.org/Java9/chap35/ch35_01.html
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