My totals are not adding up, but just staying as 0 - loops

Question

Whenever I run my code, all my totals end up as just zero. What am I missing?
while (theaterNumber != -999)
childTicketInOneTotal += childTicketInOne;
adultTicketInOneTotal += adultTicketInOne;
childTicketInTwoTotal += childTicketInTwo;
adultTicketInTwoTotal += adultTicketInTwo;
if (theaterNumber == 1)
{System.out.print("How many child tickets were sold?");
childTicketInOne = keyboard.nextInt();
System.out.print("How many adult tickets were sold?");
adultTicketInOne = keyboard.nextInt();
System.out.print("Which theater was used (1 or 2)? Enter -999 to complete inputs.");
theaterNumber = keyboard.nextInt();}
else if (theaterNumber == 2)
{System.out.print("How many child tickets were sold?");
childTicketInTwo = keyboard.nextInt();
System.out.print("How many adult tickets were sold?");
adultTicketInTwo = keyboard.nextInt();
System.out.print("Which theater was used (1 or 2)? Enter -999 to complete inputs.");
theaterNumber = keyboard.nextInt();}}
//Display totals
System.out.println();
System.out.println("Theater 1 Totals:");
System.out.println("Adult Tickets Sold: "+ adultTicketInOneTotal +"");
System.out.println("Child Tickets Sold: "+ childTicketInOneTotal +"");
System.out.printf("Total Amount Made: $%.2f \n\n", totalAmountTheaterOne);
System.out.println();
System.out.println("Theater 2 Totals:");
System.out.println("Adult Tickets Sold: "+ adultTicketInTwoTotal +"");
System.out.println("Child Tickets Sold: "+ childTicketInTwoTotal +"");
System.out.printf("Total Amount Made: $%.2f \n\n", totalAmountTheaterTwo);
}}

Answer 1

What language is this? You probably want to initialize your variables before the loop starts and add the input before the output, something like this:
childTicketInOneTotal = 0;
adultTicketInOneTotal = 0;
childTicketInTwoTotal = 0;
adultTicketInTwoTotal = 0;
while (theaterNumber != -999){
if (theaterNumber == 1)
{System.out.print("How many child tickets were sold?");
childTicketInOne = keyboard.nextInt();
System.out.print("How many adult tickets were sold?");
adultTicketInOne = keyboard.nextInt();
System.out.print("Which theater was used (1 or 2)? Enter -999 to complete inputs.");
theaterNumber = keyboard.nextInt();}
else if (theaterNumber == 2)
{System.out.print("How many child tickets were sold?");
childTicketInTwo = keyboard.nextInt();
System.out.print("How many adult tickets were sold?");
adultTicketInTwo = keyboard.nextInt();
# end if not needed?
System.out.print("Which theater was used (1 or 2)? Enter -999 to complete inputs.");
theaterNumber = keyboard.nextInt();}}
childTicketInOneTotal += childTicketInOne;
adultTicketInOneTotal += adultTicketInOne;
childTicketInTwoTotal += childTicketInTwo;
adultTicketInTwoTotal += adultTicketInTwo;
//Display totals
System.out.println();
System.out.println("Theater 1 Totals:");
System.out.println("Adult Tickets Sold: "+ adultTicketInOneTotal +"");
System.out.println("Child Tickets Sold: "+ childTicketInOneTotal +"");
System.out.printf("Total Amount Made: $%.2f \n\n", totalAmountTheaterOne);
System.out.println();
System.out.println("Theater 2 Totals:");
System.out.println("Adult Tickets Sold: "+ adultTicketInTwoTotal +"");
System.out.println("Child Tickets Sold: "+ childTicketInTwoTotal +"");
System.out.printf("Total Amount Made: $%.2f \n\n", totalAmountTheaterTwo);
}}