Method checkIndex

java/05_array/GenericArray.java:152–156

(int index)

    }

    private void checkIndex(int index) {
        if (index < 0 || index >= size) {
            throw new IllegalArgumentException("Add failed! Require index >=0 and index < size.");
        }
    }

    private void checkIndexForAdd(int index) {
        if(index < 0 || index > size) {