This is a program which is supposed to simulate a theater full of seats for sale. initially all are available, as each one is picked, its array value is set to -1, and when the iterator sees a negative value, it shows an X rather than the currency cost. The issue is with the theaterFullCheck method. when it sees the 2nd column is 100% full it crashes... I could see why the row being full might crash it but I don't get the column... it doesn't look at them that way. Any suggestions would be appreciated!
import java.util.Scanner;
public class P6point24 {
public static void main(String[] args)
{
Scanner in =new Scanner(System.in);
final int rows = 9;
final int columns = 10;
int[][] seats =
{ { 30, 40, 50, 50, 50, 50, 50, 50, 40, 30 },
{ 20, 30, 30, 40, 50, 50, 40, 30, 30, 20 },
{ 20, 20, 30, 30, 40, 40, 30, 30, 20, 20 },
{ 10, 10, 20, 20, 20, 20, 20, 20, 10, 10 },
{ 10, 10, 20, 20, 20, 20, 20, 20, 10, 10 },
{ 10, 10, 20, 20, 20, 20, 20, 20, 10, 10 },
{ 10, 10, 10, 10, 10, 10, 10, 10, 10, 10 },
{ 10, 10, 10, 10, 10, 10, 10, 10, 10, 10 },
{ 10, 10, 10, 10, 10, 10, 10, 10, 10, 10 } };
if (theaterFullCheck(seats, rows, columns)==true) {
/** int loop = 0;
int conRow = 0;
int i=0;
int j = 0;
while ( loop < 100)
{
int elementNum = i + 1;
System.out.println();
while(j < loop )
{
**/
System.out.print("Theater is SOLD OUT");
/** j++;
}
i++;
j = 0;
}
System.out.println();
**/
} //if theater check close
else {
while ( theaterFullCheck(seats, rows, columns)==false) //LINE 61 //Is theater full?
{
int j = 0, i = rows-1;
// System.out.println("generating seating"); // this is for debugging
//System.out.println("Rows: " +rows);
//System.out.println("Columns: "+columns);
System.out.println(" Row");
while (i >= 0)
{
//System.out.println("i is " +i);
System.out.println("");
while(j < columns )
{
if (seats[i][j]> 0)
{
System.out.print("$"+seats[i][j]+" "); //read each value, if positive print value with $ in front, if neg print "X"
j++;
}
else {
System.out.print(" X ");
j++;
}
}
i--;
j=0;
System.out.print(" " + (i+2));
}//
System.out.println();
System.out.println("");
System.out.println(" 1 2 3 4 5 6 7 8 9 10 ");
System.out.println(" Column #");
System.out.println("");
System.out.println(" < S T A G E > ");
System.out.println();
int selectRow = -1, selectColumn = -1; //- 1 from each to offset for the 0th spot in both rows and columns
String aKey=null; // The only way I could find to have java PAUSE so that the purchased ticket could be viewed before refresh "press 'a key'"
System.out.println("Please input the ROW number of the seat you would like: ");
selectRow= selectRow + in.nextInt();
if (selectRow >= rows) {
System.out.println("Error, you choose a Row which does not exist. Please try again.");
System.out.println("Enter a key to return to Seat Selection Menu");
aKey = in.next(); // enter 'a Key' to move on.
}
else{
System.out.println("Please input the COLUMN number of the seat you would like: ");
selectColumn= selectColumn + in.nextInt();
if (selectColumn >= columns) {
System.out.println("Error, you choose a Column which does not exist. Please try again."); // error check so they cant select seat outside of array
System.out.println("Enter a key to return to Seat Selection Menu");
aKey = in.next(); // enter 'a Key' to move on.
}
else {
if (seats[selectRow][selectColumn] < 0){
System.out.println("");
System.out.println("Please choose another seat, this one has already been purchased");
}
else {
System.out.println("");
System.out.println("Thank you for your purchase of seat Row: "+(selectRow+1) +" Column: " + (selectColumn+1) ); //combine input with the -1 offset
System.out.println("");
System.out.println("");
seats[selectRow][selectColumn] = -1; // flag the seat as taken, any non positives are returned as X in the selection screen.
}
System.out.println("Enter a key to return to Seat Selection Menu");
// aKey = in.next(); // enter 'a Key' to move on.
} // column invalid entry check close,
} //row invalid entry check close
} //theater generator close
}// ELSE run theater generator close
} //main close
public static boolean theaterFullCheck(int [][] seats, final int rows, final int columns) {
boolean soldOut = false;
int i = 0;
while (i < rows )
{
i++;
int j = 0;
while( j < columns)
{
if (seats[j][i] > 0) //LINE 180
{
soldOut = false;
return soldOut;
}
j++;
}//for2 close
} //for1 close
soldOut=true;
return soldOut;
}
} //class close
HERE IS THE FINAL OUTPUT AND CRASH
Enter a key to return to Seat Selection Menu
Row
$10 $10 $10 $10 $10 $10 $10 $10 $10 $10 9
$10 X $10 $10 $10 $10 $10 $10 $10 $10 8
$10 X $10 $10 $10 $10 $10 $10 $10 $10 7
$10 X $20 $20 $20 $20 $20 $20 $10 $10 6
$10 X $20 $20 $20 $20 $20 $20 $10 $10 5
$10 X $20 $20 $20 $20 $20 $20 $10 $10 4
$20 X $30 $30 $40 $40 $30 $30 $20 $20 3
X X $30 $40 $50 $50 $40 $30 $30 $20 2
$30 X $50 $50 $50 $50 $50 $50 $40 $30 1
1 2 3 4 5 6 7 8 9 10
Column #
< S T A G E >
Please input the ROW number of the seat you would like:
9
Please input the COLUMN number of the seat you would like:
2
Thank you for your purchase of seat Row: 9 Column: 2
Enter a key to return to Seat Selection Menu
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 9
at dfg.P6point24.theaterFullCheck(P6point24.java:180)
at dfg.P6point24.main(P6point24.java:61)
