Java の Switch ステートメントで値の範囲を処理するにはどうすればよいですか?

switch (num) {
    case 1 .. 5:
        System.out.println("testing case 1 to 5");
        break;
    case 6 .. 10:
        System.out.println("testing case 6 to 10");
        break;
}

if (isBetween(num, 1, 5)) {
    System.out.println("testing case 1 to 5");
} else if (isBetween(num, 6, 10)) {
    System.out.println("testing case 6 to 10");
}

public static boolean isBetween(int x, int lower, int upper) {
    return lower <= x && x <= upper;
}