public class BookManage {
BookSet bookSet = new BookSet();
Scanner sc = new Scanner(System.in);

public void initial() {
    Book Javajichujiaocheng = new Book();
    Javajichujiaocheng.name = "Java基础教程";
    Javajichujiaocheng.state =0;
    Javajichujiaocheng.date = "2015 - 7 - 1";
    Book shujukujishu = new Book();
    shujukujishu.name = "数据库技术";
    shujukujishu.state = 1;
    shujukujishu.date = "0";
    Book renyueshenhua = new Book();
    renyueshenhua.name = "人月神话";
    renyueshenhua.state = 1;
    renyueshenhua.date = "0";
    bookSet.books[0] = Javajichujiaocheng;
    bookSet.books[1] = shujukujishu;
    bookSet.books[2] = renyueshenhua;
}

public void startMenu() {
    boolean flag = true;
    do {
        System.out.println("欢迎使用图书管理系统");
        System.out.println("-----------------------");
        System.out.println("1.新增图书");
        System.out.println("2.查看图书");
        System.out.println("3.删除图书");
        System.out.println("4.借出图书");
        System.out.println("5.归还图书");
        System.out.println("6.退出");
        System.out.println("-------------------------");
        System.out.println("请选择要执行的操作：");
        int choice = sc.nextInt();
        switch (choice) {
            case 1:
                System.out.println("新增图书");
                add();
                break;
            case 2:
                System.out.println("查看图书");
                search();
                break;
            case 3:
                System.out.println("删除图书");
                delete();
                break;
            case 4:
                System.out.println("借出图书");
                sell();
                break;
            case 5:
                System.out.println("归还图书");
                gui();
                break;
            case 6:
                System.out.println("谢谢使用！");