Code

   
    /// Name: Afaf Nabeeha
    /// Period: 7
    /// Program Name: do-While Swimming
    /// File Name: Swimming.java
    /// Date Finished: 12/17/2015 public class Swimming

        import java.util.Scanner; 
        public class DoWhileSwimming
        {
            public static void main( String[] args ) throws Exception
            {
                Scanner keyboard = new Scanner(System.in);
                
                String swimmer1 = "GALLANT";
                String swimmer2 = "GOOFUS ";
                
                double minimumTemperature = 79.0; //degrees Fahrenheit
                double currentTemperature;
                double savedTemperature;
                int swimTime;
                System.out.print("What is the current water temperature? " );
                currentTemperature = keyboard.nextDouble();
                savedTemperature = currentTemperature; //saves a copy of this value so we can get it back later. 
                
                System.out.println( "\nOkay, so the current water temperature is " + currentTemperature + "F." );
                System.out.println( swimmer1 + " approaches the lake...." );
                
                swimTime = 0;
                while (currentTemperature >= minimumTemperature ) //pre test loop
                {
                    System.out.print( "\t" + swimmer1 + " swim for a bit." );
                    swimTime++;
                    System.out.println( " Swim time: " + swimTime + " min." );
                    Thread.sleep(600);
                    currentTemperature -= 0.5;
                    System.out.println( "\tThe current water temperature is now " + currentTemperature + "F." );
                }
                
                System.out.println( swimmer1 + " stops swimming. Total swim time: " + swimTime + " min." );
                
                currentTemperature = savedTemperature; // restores original water temperature
                
                System.out.println( "\nOkay, so the current water temperature is " + currentTemperature + "F." );
                System.out.println( swimmer2 + " approaches the lake...." );
                
                swimTime = 0;
                do //post test loop
                {
                    System.out.println( "\t" + swimmer2 + " swims for a bit." );
                    swimTime++;
                    System.out.println( " Swim time: " + swimTime + "min." );
                    Thread.sleep(600);
                    currentTemperature -= 0.5;
                    System.out.println( "\tThe current water temperature is now " + currentTemperature + "F." );
                    
                } while ( currentTemperature >= minimumTemperature );
                
                System.out.println( swimmer2 + " stops swimming. Total swim time: " + swimTime + "min." );
                
                // 1. Yes, both Goofus and Gallant swim for the same amount of time. 
                // 3. Gallant checks temperature first.
                // 4. Goofus goes right in and then stops. 
                // 5. A while loop checks the condition first before running the program.  A do-while loop does not check condition until after the program is finished running. 
                // 6. The pre-test loop is the while loop and the post-test loop is the do-while loop.
                
            }
        }
             
    
Picture of the output