imprt java.util.Scanner;//导入类 * Scanner in = new Scanner(System.in);新建对象 * String s = in.nextLine();//调用对象的方法 * int i = in.nextInt(); * double d = in.nextDouble();

imprt java.util.Scanner;//导入类 * Scanner in = new Scanner(System.in);新建对象 * String s = in.nextLine();//调用对象的方法 * int i = in.nextInt(); * double d = in.nextDouble();