jodd-core/src/main/java/jodd/util/StringBand.java
protected int calculateLength() {
		int len = 0;
		for (int i = 0; i < index; i++) {
			len += array[i].length();
		}
		return len;
	}
protected int calculateLength() {
		int len = 0;
		for (int i = 0; i < index; i++) {
			len += array[i].length();
		}
		return len;
	}
Calculates string length.