public class Handler {

    Mas mas = new Mas();

    public void doSmthArray() {
        int sum = 0;
        if (mas.getMassiv().length > 4) throw new MyArraySizeException();
        for (int i = 0; i < mas.getMassiv().length; i++) {
            for (int j = 0; j < mas.getMassiv()[i].length; j++) {
                try {
                    sum = sum + Integer.parseInt(mas.getMassiv()[i][j]);
                } catch (NumberFormatException e) {
                    System.out.println();
                    throw new MyArrayDataException();
                }
            }
        }
    }
}

public class MainClass {
    public static void main(String[] args) {
        Handler handler = new Handler();
        try {
            handler.doSmthArray();
        }catch (MyArraySizeException e){
            System.out.println("превышен допустимый размер массива");
        }catch (MyArrayDataException exc){

        }
    }
}

Console.log('i = ' + i + ' j = ' + j);