public void firstDisp() {
		try {
			while (true) {
				System.out.println("iID͂Ă");
				String str = br.readLine();
				if (checkNumber(str)) {
					inputID = Integer.parseInt(str);
					break;
				} else {
					System.out.println("͂Ȃł");
					System.out.println("l͂Ă");
				}
			}

			while (true) {
				System.out.println("ׂ鐔ʂ͂Ă");
				String str = br.readLine();
				if (checkNumber(str)) {
					inputQuantity = Integer.parseInt(str);
					break;
				} else {
					System.out.println("͂Ȃł");
					System.out.println("l͂Ă");
					System.out.println();
				}
			}

		} catch (NumberFormatException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}