Java Reference
In-Depth Information
return response;
}
public static void main(String [] args) {
System.out.println(convertGrade('C'));
}
}
The value being switched on is the parameter
grade
. Because each
case
statement uses a
final
variable, the code compiles fi ne and the output is
Not bad.
The
for
Statement
The exam objectives state that you should be able to “develop code that implements all
forms of loops and iterators, including the use of for and the enhanced for loop (for-each),
and explain the values taken by loop counter variables during and after loop execution.”
This section discusses these details of
for
and
for-each
loops. A
for statement
is a
repetition control structure that is useful for repeating a block of code a fi xed number of
times. There are two types of
for
statements in Java:
The basic
for
statement
The enhanced
for
statement
This section discusses the details of both types of
for
statements, starting with the basic
for
statement.
The Basic
for
Statement
A basic
for
statement has the following properties:
The two semicolons are required and create three sections: an
initialization
statement, a
boolean
expression, and an update statement.
The
initialization
step occurs once at the beginning of the loop.
The
boolean_expression
must evaluate to
true
or
false
.
The
initialization
and
update_statement
sections can contain multiple statements,
separated by commas.
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