switch behaviour java

Why doens't the following code throw a runtimeException?

public class Test2 extends Test {


public static void main(String[] args) {
    char[] array = new char[]{'A', '\t', 'e', 'I', 'O', 'u', '\n', 'p'};

    int count = 0;
    for (char c : array) {
        switch (c) {
            case 'A':
                continue;
            case 'E':
                count++;
                break;
            case 'I':
                count++;
                continue;
            case 'o':
                break;
            case 'u':
                count++;
                continue;
        }
    }
    System.out.println("length of array: " + array.length);
    System.out.println("count= " + count);
}

}

notice that 'E' and 'e' isn't equal and it is in the switch.. The same for 'p'. It does compile and run en prints: length of array: 8 count= 2

I completed my OCA certificate today and got the above question. But I can't figure out why it doesn't throw a runtime when 'e' or 'p' is checked.. This means there is an empty "default" in every switch or something?