jodd-core/src/main/java/jodd/util/ArraysUtil.java
public static int indexOf(char[] array, char value) {
		for (int i = 0; i < array.length; i++) {
			if (array[i] == value) {
				return i;
			}
		}
		return -1;
	}
public static int indexOf(char[] array, char value) {
		for (int i = 0; i < array.length; i++) {
			if (array[i] == value) {
				return i;
			}
		}
		return -1;
	}
Finds the first occurrence of an element in an array.