static public void getMenu() {
		System.out.println("******************Menu*******************");
		System.out.println("1.Add oak in forest");
		System.out.println("2.Show Oaks");
		System.out.println("3.Edit Oak");
		System.out.println("4.Delete oak");
		System.out.println("5.Sort Oaks");
		System.out.println("6.Write Oaks");
		System.out.println("7.Read Oaks");

	}