CODEWITHSUNDEEP
javaarrays
dan
dan

Reputation: 127

Not able to pass array into method

Why can't I send the appleArray, blueberryArray, and peanutArray to the calcTotalPies method? 

 final int MAX_PIES = 81;
 final int MAX_PER_TYPE = 27;

 String typeOfPie = getPieType();
 while (!typeOfPie.equalsIgnoreCase("q")) {
     if (typeOfPie.equalsIgnoreCase("apple")) {
         String[] appleArray = fillApple(typeOfPie, MAX_PER_TYPE);
     }
     else if (typeOfPie.equalsIgnoreCase("blueberry")) {
         String[] blueberryArray = fillBlueberry(typeOfPie, MAX_PER_TYPE);
     }
     else if (typeOfPie.equalsIgnoreCase("peanut")) {
         String[] peanutArray = fillPeanut(typeOfPie, MAX_PER_TYPE);
     }
     typeOfPie = getPieType();
}

if (typeOfPie.equalsIgnoreCase("q")) {
      int totalPies = calcTotalPies(appleArray, blueberryArray, peanutArray);
}

Upvotes: 0

Views: 37

Answers (2)

Amit.rk3
Amit.rk3

Reputation: 2417

when your code execution reaches to your method, if else block scopes inside while loop within which your arrays are declared have ended and they are not reachable. So you need to initialize them outside the loop.

Try this

final int MAX_PIES = 81;
final int MAX_PER_TYPE = 27;

String[] peanutArray = null;
String[] blueberryArray = null;
String[] appleArray = null;

String typeOfPie = getPieType();
while (!typeOfPie.equalsIgnoreCase("q")) {
    if (typeOfPie.equalsIgnoreCase("apple")) {
        appleArray = fillApple(typeOfPie, MAX_PER_TYPE);
    } else if (typeOfPie.equalsIgnoreCase("blueberry")) {
        blueberryArray = fillBlueberry(typeOfPie, MAX_PER_TYPE);
    } else if (typeOfPie.equalsIgnoreCase("peanut")) {
        peanutArray = fillPeanut(typeOfPie, MAX_PER_TYPE);
    }
    typeOfPie = getPieType();
}

if (typeOfPie.equalsIgnoreCase("q")) {
    int totalPies = calcTotalPies(appleArray, blueberryArray, peanutArray);
}

Upvotes: 0

Turing85
Turing85

Reputation: 20185

A local variable is always declared within a block and only alive in this block (note: a method body or the body of an if or a loop is also a block).

You declared appleArray, blueberryArray and peanutArray only in their surrounding if-blocks, therefore they are not alive in the lowest if-block. The compiler should tell you something of these arrays not being defined.

Upvotes: 1

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