I created class Supervisor which contains the constructor and a toString method. However when I try to print an Index of the array an error occur,"Variable svArray might not have been initialized.
What can I do to solve this ? 

```
Supervisor[] svArray;
if (mainChoice == 3){
        String ID, name, department, resarch;
        System.out.println("Enter How Many Supervisor you want to enter : ");
        svNumber = input.nextInt();
        svArray = new Supervisor[svNumber];
        for (int i = 0; i < svNumber; i++) {
            System.out.println("---Enter Supervisor " + (i + 1) + " Of " + svNumber + " ---");
            System.out.println("Enter staff ID : ");
            ID = input.next();
            System.out.println("Enter name : ");
            name = input.next();
            System.out.println("Enter department : ");
            department = input.next();
            svArray[i]=new Supervisor(ID, name, department);\
        }

    }
System.out.print(svArray[1].toString)
//Error, variable svArray might not have been initialized

```