Enissay

        String[] arrayA = {"AA", "AB", "AC"};
        String[] arrayB = {"B1", "B2", "B3", "B4"};
        String[][] arrayC;

        arrayC = new String[arrayA.length][arrayB.length];

        for (int i = 0; i < arrayA.length; i++) {
            arrayC[i][0] = arrayA[i];
            System.arraycopy(arrayB, 0, arrayC[i], 1, arrayB.length); // => ERROR: java.lang.ArrayIndexOutOfBoundsException
    }