I have a problem in java. It can not find the symbol in my switch function.
I think there is something wrong with char inputChar(i) but I can not figure out the problem.

Here is the code:

```
import eip.*;

public class IntDigitAutomat
{
public static boolean digitCheck(char inputChar)
{
    boolean isdigit = true;
    int q = 1;

    for (int i=0; i<input.length(); i++)
    {
        if(isdigit == false)
            break;
            switch(q)
            {
                case 1:
                    switch(inputChar(i))
                    {
                        case '+':
                        case '-':
                            isdigit = true;
                            q=2;
                            break;

                        case ' ':
                            isdigit = true;
                            q=1;
                            break;

                        case '0':
                        case '1':
                        case '2':
                        case '3':
                        case '4':
                        case '5':
                        case '6':
                        case '7':
                        case '8':
                        case '9':
                            isdigit = true;
                            q=3;
                            break;

                        default:
                            isdigit = false;
                    }

                case 2:
                    switch(inputChar(i))
                    {
                        case '0':
                        case '1':
                        case '2':
                        case '3':
                        case '4':
                        case '5':
                        case '6':
                        case '7':
                        case '8':
                        case '9':
                            isdigit = true;
                            q=3;
                            break;

                        default:
                            isdigit = false;
                    }

                case 3:
                    switch(inputChar(i))
                    {
                        case '0':
                        case '1':
                        case '2':
                        case '3':
                        case '4':
                        case '5':
                        case '6':
                        case '7':
                        case '8':
                        case '9':
                            isdigit = true;
                            break;

                        default:
                            isdigit = false;
                    }
        }
        return isdigit;
    }
}
}

```

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