[chooka]

Hi there all, im having problems trying to get a loop to jump out when it has to. Heres part of the program

if (age < 12)
outFile.println("No one " + age + " years of age can hire a DVD");
dvdType = inFile.next().charAt(0);
if (age > 12 && age <15)
outFile.println("Borrowers " + age + " years of age can hire only \"G\" DVDs ");
dvdType = inFile.next().charAt(0);

This is in a while loop. I want it to exit if the age is less than 12 and go onto the next line of the infile.
If someone can help that would be good.
Cheers

[Emily]

What's the condition in the while loop? You could either set the condition to false, or you could use a break statement in the if statement.

[chooka]

hi, i want the program to break if the customers age is less than 12. But i want it to display what was read from the infile, and not calculate it.
Could u please give me some examples??

[Emily]

I'm not really sure what you mean... could you post a larger excerpt of the code, like the whole loop?

[chooka]

This is the whole loop. I want it to jump back up to the start of the loop. Thats where i put the "dvdType = inFile.next().charAt(0);" statement in. This reads the first part of the infile. Let me know if its all wrong..


while (dvdType != '*' )
{
duration = inFile.nextInt();
age = inFile.nextInt();
weeksHired = inFile.nextInt();
audience = inFile.next();

//Calculate weekly hire costs
if (duration == 1)
weeklyHireCost = 5;
if (duration == 2)
weeklyHireCost = 8;
if (duration !=1 && duration !=2)
weeklyHireCost = 10;

//Output values entered
outFile.println("------------------------------------------------------------------------------");
outFile.println("Enter classification [G, M or R, * ends]:> " + dvdType );
outFile.println("Enter hours of duration:>" + duration);
outFile.println("Enter age:>" + age);
outFile.println("Enter no. of weeks hired:>" + weeksHired);
outFile.println("Enter intended audience [

rivate or <M>***:>" + audience);

//Start of switch statement
switch (dvdType)
{
case 'R' : outFile.println("*** $100 surcharge for \"R\" rated DVDs ***");
numOfR++;
mainTotal = (weeklyHireCost * weeksHired) + ratingSurcharge;
hoursViewed = (hoursViewed + duration);
break;
case 'M' : mainTotal = (weeklyHireCost * weeksHired);
numOfM++;
hoursViewed = (hoursViewed + duration);
break;
case 'G' : mainTotal = (weeklyHireCost * weeksHired);
numOfG++;
hoursViewed = (hoursViewed + duration);
break;
}
//Distinguish between Mass and private audiences`
if (audience.equals("M"))
{
outFile.println("*** Mass audience viewing incurs double the total cost ***");
mainTotal = mainTotal * 2;
}
// Determine age barrier
if (age < 12)
{
outFile.println("*** No one " + age + " years of age can hire a DVD ***");
dvdType = inFile.next().charAt(0);
}
if (age > 12 && age <15)
{
outFile.println("*** Borrowers " + age + " years of age can hire only \"G\" DVDs ***");
dvdType = inFile.next().charAt(0);
}

//Calculate discount for Pensioners
if ((age >64) && (dvdType!=('R')))
{
mainTotal = (mainTotal * .95);
outFile.println("*** 5% senior citizens discount applied ***");
}
//Output Costs
outFile.println("Cost for a " + age + " yo hiring an " + dvdType + " rated, " + duration + " hr DVD for " + weeksHired + " wks,"
+ " shown to a " + audience + " is $" + mainTotal);
outFile.println();
//Calculate Total Amount
totalAmount = (totalAmount + mainTotal);
dvdType = inFile.next().charAt(0);
}

[Emily]

Ok, I think I see what you're trying to do, and as I see it there's a couple ways you could do it. I think the easiest would be to enclose everything after the if (age < 12) statement with an else statement, like so:

if (age < 12)
{
outFile.println("*** No one " + age + " years of age can hire a DVD ***");
dvdType = inFile.next().charAt(0);
} else {

And then add a closing bracket right before the bracket that closes the while loop, at the very end.

I think that should work... let me know if it doesn't.

[chooka]

Nah that didnt work, all i want the program to do is jump back to the top of the loop if the customer is less that 12 years old. When i start the loop back up i use "dvdType = inFile.next().charAt(0);". That starts the loop again. When i put more than 1 of these in the loop it generates this error.

> Executing: C:\Program Files\ConTEXT\ConExec.exe "C:\Program Files\Java\jdk1.5.0_03\bin\java.exe" number3

Exception in thread "main" java.lang.IllegalStateException: Scanner closed
at java.util.Scanner.ensureOpen(Scanner.java:1025)
at java.util.Scanner.next(Scanner.java:1411)
at java.util.Scanner.nextInt(Scanner.java:2040)
at java.util.Scanner.nextInt(Scanner.java:2000)
at number3.main(number3.java:39)
> Execution finished.

[Emily]

So if age < 12, it should basically read a value for dvdType and then skip the Output Costs code? If that's what you want it to do, what I gave you should work... are you sure you've got all the brackets in the right place and everything?

[chooka]

ok that part worked.. Is it possible to have the other statement in also
if (age > 12 && age <15)
{
outFile.println("*** Borrowers " + age + " years of age can hire only \"G\" DVDs ***");
dvdType = inFile.next().charAt(0);
}
and skip the output costs
??

[Emily]

Yeah, do it like this:

// Determine age barrier
if (age < 12)
{
outFile.println("*** No one " + age + " years of age can hire a DVD ***");
dvdType = inFile.next().charAt(0);
} else if (age > 12 && age <15)
{
outFile.println("*** Borrowers " + age + " years of age can hire only \"G\" DVDs ***");
dvdType = inFile.next().charAt(0);
} else
{
//Calculate discount for Pensioners
if ((age >64) && (dvdType!=('R')))
{
mainTotal = (mainTotal * .95);
outFile.println("*** 5% senior citizens discount applied ***");
}
//Output Costs
outFile.println("Cost for a " + age + " yo hiring an " + dvdType + " rated, " + duration + " hr DVD for " + weeksHired + " wks,"
+ " shown to a " + audience + " is $" + mainTotal);
outFile.println();
//Calculate Total Amount
totalAmount = (totalAmount + mainTotal);
dvdType = inFile.next().charAt(0);
}
}