public class borrowBooks {

public static void main(String[] args) {

// 調用select方法

borrowBooks Select = new borrowBooks();

Select.select();

}

/**

*?

*/

public void select() {

String[][] bookList=new String[][] {{"1","水滸傳"},{"2","紅樓夢"},{"3","三國演義"}};

//String[] bookList = new String[] {"java基礎","水滸傳","紅樓夢","西游記","數據結構"};?

System.out.println("輸入命令：1-按照圖書名稱查詢 ? 2-按照圖書編號查詢");

Scanner input = new Scanner(System.in);

int num = input.nextInt();

try {

if(num==1) {

System.out.println("請輸入您要查找的圖書名稱：");

Scanner input1 = new Scanner(System.in);

String bookName=input1.nextLine();

//一維數組

/* boolean t=Arrays.asList(bookList).contains(bookName);

if(t) {

System.out.println("您輸入的圖書"+bookName+"存在！");

}else {

throw new NobookException();

}*/

//二維數組

for(String[] bookname:bookList) {

for(String book:bookname) {

if(book.equals(bookName)) {

System.out.println("您輸入的圖書"+book+"存在！");

}else ?{

throw new NobookException();

}

}

}

}else if(num==2) {

System.out.println("請輸入您要查找的圖書編號");

Scanner input2 = new Scanner(System.in);

int bookNum=input2.nextInt();

if(bookNum>=1&&bookNum<=bookList.length) {

System.out.println("您查找的圖書名稱為"+bookList[bookNum-1]);

}else {

throw new NobookException();

}

}else {

throw new CommandException();

}

}catch (NobookException e) {

// TODO: handle exception

System.out.println("您輸入的圖書不存在！請重新輸入");

select();

}catch (CommandException e) {

// TODO: handle exception

System.out.println("您輸入的命令有誤，請重新輸入");

select();

}

}

}