为什么不能在控制台输入书名

Question

public class Test {

public static boolean a;

public void ex() throws MyException{

if (a == false){

throw new MyException("输入有误，请重新输入");

}

}

public static void main(String[] args) {

// TODO Auto-generated method stub

System.out.println("输入1表示按照书名查找书籍，输入2表示按照书的序号查找书籍");

Scanner input = new Scanner(System.in);

int a = input.nextInt();

if (a == 1){

System.out.println("请输入书籍名称");

Scanner input1 = new Scanner(System.in);

String b = input1.toString();

switch (b) {

case "高数":

System.out.println(new Book().getBook1());

break;

case "数据结构":

System.out.println(new Book().getBood2());

break;

default:

Test.a = false;

break;

}

}

}

}

Answer 1

String b = input1.toString();把这行换成：String b = input1.nextLine();input1.nextLine(); 才是读取控制台输入的一行字符串。