1	Loop Structure’s Statements While (do…while) Statement For Statement
2	Definition Loop (Repetition) statements control a block (=paragraph) of code to be executed for a fixed number of times or until a certain condition is met. Managed loop: Count-controlled loop(repetitions) terminate the execution of the block after it is executed for a fixed number of times. Unmanaged loop: Sentinel-controlled loop(repetitions) terminate the execution of the block after one of the designated values called a sentinel is encountered.
3	The while Statement
4	Syntax for the while Statement
5	Control Flow of while
6	More Examples
7	Finding GCD
8	Example: Testing Input Data
9	Watch Out for Pitfalls Watch out for the off-by-one error (OBOE). Make sure the loop body contains a statement that will eventually cause the loop to terminate. Make sure the loop repeats exactly the correct number of times. If you want to execute the loop body N times, then initialize the counter to 0 and use the test condition counter < N or initialize the counter to 1 and use the test condition counter <= N.
10	Loop Pitfall - 1
11	Overflow An infinite loop often results in an overflow error. An overflow error occurs when you attempt to assign a value larger than the maximum value the variable can hold. In Java, an overflow does not cause program termination. With types float and double, a value that represents infinity is assigned to the variable. With type int, the value “wraps around” and becomes a negative value.
12	Loop Pitfall - 2
13	Loop Pitfall – 2a
14	Loop Pitfall - 3 Goal: Execute the loop body 10 times.
15	The do-while Statement
16	Syntax for the do-while Statement
17	Control Flow of do-while
18	Loop-and-a-Half Repetition Control Loop-and-a-half repetition control can be used to test a loop’s terminating condition in the middle of the loop body. It is implemented by using reserved words while, if, and break.
19	Example: Loop-and-a-Half Control
20	Pitfalls for Loop-and-a-Half Control Be aware of two concerns when using the loop-and-a-half control: The danger of an infinite loop. The boolean expression of the while statement is true, which will always evaluate to true. If we forget to include an if statement to break out of the loop, it will result in an infinite loop. Multiple exit points. It is possible, although complex, to write a correct control loop with multiple exit points (breaks). It is good practice to enforce the one-entry one-exit control flow.
21	Confirmation Dialog A confirmation dialog can be used to prompt the user to determine whether to continue a repetition or not.
22	Example: Confirmation Dialog
23	The for Statement
24	Syntax for the for Statement
25	Control Flow of for
26	More for Loop Examples
27	The Nested-for Statement Nesting a for statement inside another for statement is commonly used technique in programming. Let’s generate the following table using nested-for statement.
28	Generating the Table