Coffee$drink is Coffee
Tea$drink is Tea
Juice$drink is Juice
//4
//5
//6 ここまでは設定
		InputStream fileStream = new FileInputStream("data.txt");
		System.setIn(fileStream);
		Scanner sc = new Scanner(System.in);
		//1.String型の変数 drink を宣言, キーボード入力から文字列を受け取り代入
		???? = sc.next();
		//2.drink の値を、 drink is Coffee  のように表示
		System.out.println();