Logique

	public static void main(String[] args) {
		boolean []t = {false, false, false, false, true};
		boolean e = false;
		int cpt = 0;
		try {
			while (!t[cpt]){
				cpt++;
			}
		} catch (ArrayIndexOutOfBoundsException ex) {
			System.out.println(cpt);
			e = true;
		}
		if (!e)
			System.out.println(cpt);
		
	}