交作业（图书查询）

public class Initial {

public static void main(String[] args) {

String[] library = {"xml","ssm","数据结构与算法"};

int n = 0;

while (true) {

try {

Scanner scanner = new Scanner(System.in);

String tipString = "图书不存在！";

System.out.println("输入命令：1-按书名查找 2-按编号查找");

n = scanner.nextInt();

if (n==1) {

try {

System.out.println("请输入书名：");

String name = scanner.next();

for (int i = 0; i < library.length; i++) {

if (name.equals(library[i])) {

tipString = "book:"+name;

break;

}

}

} catch (Exception e) {

continue;

} finally {

System.out.println(tipString);

}

}else if (n==2) {

System.out.println("请输入编号：");

try {

int num = scanner.nextInt();

tipString = "book:"+library[num];

System.out.println(tipString);

}catch (Exception e) {

System.out.println("请输入数值");

continue;

} 

}

} catch (Exception e) {

System.out.println("根据提示输入正确命令！");

continue;

} 

}

}

}