使用扫描仪和多变量数组(Using scanner and multi variable arrays)

使用扫描仪和多变量数组(Using scanner and multi variable arrays)

所以，我有这个小问题。 我提示用户输入需要存储在多变量数组中的3个变量（Str，Str，Int），我无法使其工作。 任何帮助将不胜感激。

LibraryBook[] book = new LibraryBook[5]; //inputing a new book Scanner input = new Scanner(System.in); LibraryBook[] myBook = new LibraryBook[0]; System.out.println("Enter book name: "); String title = input.nextLine().trim(); System.out.println("Enter author name: "); String author = input.nextLine().trim(); System.out.println("Enter # pages: "); int pages = input.nextInt(); myBook[0] =new LibraryBook(title,author,pages);

我收到这个错误

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0 at LibraryBookSort.main(LibraryBookSort.java:36)

---- jGRASP wedge2：进程的退出代码是1。

So, I have this tiny problem. I'm prompting the user to input 3 variables (Str, Str, Int) that need to be stored in a multi variable array and I can't get it to work. Any help will be appreciated.

LibraryBook[] book = new LibraryBook[5]; //inputing a new book Scanner input = new Scanner(System.in); LibraryBook[] myBook = new LibraryBook[0]; System.out.println("Enter book name: "); String title = input.nextLine().trim(); System.out.println("Enter author name: "); String author = input.nextLine().trim(); System.out.println("Enter # pages: "); int pages = input.nextInt(); myBook[0] =new LibraryBook(title,author,pages);

I get this error

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0 at LibraryBookSort.main(LibraryBookSort.java:36)

----jGRASP wedge2: exit code for process is 1.

最满意答案

删除此行

LibraryBook[] myBook = new LibraryBook[0];

并替换最后一行

myBook[0] =new LibraryBook(title,author,pages);

这样

book[0] =new LibraryBook(title,author,pages);

delete this line

LibraryBook[] myBook = new LibraryBook[0];

and replace last line

myBook[0] =new LibraryBook(title,author,pages);

by this

book[0] =new LibraryBook(title,author,pages);