public boolean find(int value) {
			System.out.println("happen " + this.value);
			if (value == this.value) {
				return true;
			} else if (value > this.value) {
				if (right == null)
					return false;
				return right.find(value);
			} else {
				if (left == null)
					return false;
				return left.find(value);
			}

		}