找不到访问器/突变器方法的变量

Question

I am trying to make a program for a homework assignment where on this first class I am making my variables and adding accessor/mutator methods for this but for some reason it can't find my variable of CashBallPick on line 11. I checked many times and it looks spelled the same way at all places with caps in the correct places.

import java.util.Scanner;
public class CashBall
{
    Scanner keyboard = new Scanner(System.in);
    int[] lotteryNumbers = new int[4];
    int yourNumbers;
    int CashBallPick;
    public CashBall(int yourNumbers, int CashBallPick)
    {
        this.yourNumbers=yourNumbers;
        this.yourCashBallPick=CashBallPick;
    }
    public int getYourNumbers()
    {
        return yourNumbers;
    }
    public int getCashBallPick()
    {
        return CashBallPick;
    }
    public void setYourNumbers(int yourNumbers)
    {
        this.yourNumbers=yourNumbers;
    }
    public void setCashBallPick(int CashBallPick)
    {
        this.yourCashBallPick=CashBallPick;
    }

}

There is also another class that I am making that is the driver class. I know for normal variables that are written in a different class, lets say a variable called ExampleVariable if I had a constructor for that and wanted to use that variable in a different class I would go ExampleVariable E1 = new ExampleVariable(info here) but how would I do that for an array?

Answer 1

It looks like you probably want your constructor like this:

public CashBall(int yourNumbers, int yourCashBallPick)
{
    this.yourNumbers=yourNumbers;
    this.yourCashBallPick=yourCashBallPick;
}

You're missing the your prefix for yourCashBallPick in two places.

Answer 2

If this is the whole class, try changing line 11 to:

this.CashBallPick=CashBallPick

That should do it. The reason it didn't work before was because your class did not have a variable named "yourCashBallPick".

Edit: line 27 needs the same fix.

Answer 3

You seem to have a mix of CashBallPick and this.yourCashBallPick in the code. You didn't declare yourCashBallPick anywhere so maybe:

int CashBallPick;

Should be

int yourCashBallPick;

--Dan

Answer 4

It is spelled yourCashBallPick in some places (such as setCashBallPick() and in your constructor) and CashBallPick some others (such as getCashBallPick() ). make it the same in all methods.

And regarding arrays, lets say you want an array of 14 ExampleVariable s:

ExampleVariable example[] = new ExampleVariable[14];
for (int i=0; i< example.length; i++)
     example[i] = new ExampleVariable(somevalue);

Answer 5

Is this line correct?

 this.yourCashBallPick=CashBallPick; 

Is your global variable really declared like this?