More Conditionals and Loops - Java Software Solutions: Foundations of Program Design - page 294

Summary of Key Concepts

A switch statement matches a character or integer value to one of several
possible cases.

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A break statement is usually used at the end of each case alternative of a
switch statement.

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The conditional operator evaluates to one of two possible values based on
a boolean condition.

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A do statement executes its loop body at least once.

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A for statement is usually used when a loop will be executed a set number
of times.

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The for-each version of a for loop simplifies the processing of all elements
in an Iterable object.

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The loop statements are functionally equivalent. Which one you use should
depend on the situation.

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A dialog box is a pop-up window that allows brief, specific user interac-
tion to provide information or verify an action.

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Exercises
Visit www.myprogramminglab.com to complete many of these Exercises
online and get instant feedback.
EX 6.1

What output is produced by the following code fragment?

for ( int num = 0; num <= 200; num += 2)
System.out.println (num);

EX 6.2 What output is produced by the following code fragment?

for ( int val = 200; val >= 0; val -= 1)
if (val % 4 != 0)
System.out.println (val);

EX 6.3 Transform the following while loop into an equivalent do loop

(make sure it produces the same output).

int num = 1;
while (num < 20)
{
num++;
System.out.println (num);
}