Assignment #69 and Do-While Swimming
Code
/// Name: Lauren Baird
/// Period: 7
/// Program Name: do-while Swimming
/// File Name: DoWhileSwimming.java
/// Date Finished: 11/9/2015
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 )
{
System.out.print( "\t" + swimmer1 + " swims for a bit." );
swimTime++;
System.out.println( " Swim time: " + swimTime + " min." );
Thread.sleep(600); // pauses for 600 milliseconds
currentTemperature -= 0.5; // subtracts 1/2 a degree from the water temperature
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
{
System.out.print( "\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." );
// Goofus and Gallant both swam for 4 minutes when the current temperature was 80.5
// When the temperature is set to 78, Goofus swims for 1 minute and Gallant swims for 0 minutes.
// Gallant checks the water temperature first
// Goofus just dives into the water without checking the temperature
// A while loop will check the parameters before running, where as the do-while loop checks them after running
// While Loop is pre-test loop and Do-While Loop is post-test loop
}
}