Data Structures and Algorithms in Java[1].pdf - Fulvio Frisone

public void eatApples (Apples apples) {
}
numApples = apples.getNumApples ();
for (int x = 0; × < numApples; ×++) {
}
eatApple (apples.getApple (×));
spitOutCore ();
In the Java example above, the loop variable x was declared as int x = 0.
Before each iteration, the loop tests the condition " x < numApples" and
executes the loop body only if this is true. Finally, at the end of each iteration the
loop uses the statement x++ to increment the loop variable x before again testing
the condition.
Incidentally, since 5.0, Java also includes a for-each loop, which we discuss in
Section 6.3.2.
Do-While Loops
Java has yet another kind of loop besides the for loop and the standard while
loop—the do-while loop. The former loops tests a condition before performing
an iteration of the loop body, the do-while loop tests a condition after the loop
body. The syntax for a do-while loop is as shown below:
do
loop_statement
while (boolean_exp)
Again, the loop body statement, loop_statement, can be a single statement or a
block of statements, and the conditional, boolean_exp, must be a Boolean
expression. In a do-while loop, we repeat the loop body for as long as the
condition is true each time it is evaluated.
Consider, for example, that we want to prompt the user for input and then do
something useful with that input. (We discuss Java input and output in more detail
in Section 1.6.) A possible condition, in this case, for exiting the loop is when the
user enters an empty string. However, even in this case, we may want to handle
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