Yes — Java has the if
statement
(both with and without an else
),
the switch
statement,
and the conditional
statement.
Of these, the if
statement (with an else
) is
by far the most useful.
The other two types of branches are not logically needed, although
they are sometimes useful.
do
Statement
The do
statement is similar to the
while
statement with an important
difference:
the do
statement performs a
test after each execution of the loop body.
Here is a counting loop that prints integers from 0 to 9:
Notice how the do
and the
while
bracket the statements
that form the loop body.
To start, the statements in the loop body are executed.
Then the condition after the while
is tested.
If it is true the loop body is executed again.
Otherwise, control passes to the statement after the test.
int count = 0; // initialize count to 0 do { System.out.println( count ); // loop body: includes code to count++ ; // change the count } while ( count < 10 ); // test if the loop body should be // executed again.
Does the code fragment include the three things that all loops must do?