图书馆借书

publicclassComplex{

publicstaticvoidmain(String[]args){

/*bx书馆开馆*/

Borrow.open();

/*老师太妃糖来借了十六本书*/

Teachertaifeitang=newTeacher();

taifeitang.BorrowBooks();

taifeitang.setBorrowBooks(16);

/*学生肖博来还了九十五本书*/

StudentXiaobo=newStudent();

Xiaobo.ReturnBooks();

Xiaobo.setReturnBooks(95);

/*图书馆闭馆*/

Borrow.close();

}

}

//Borrow接口

interfaceBorrow{

publicstaticvoidopen(){

System.out.println("各位果龟请注意，bx图书馆开馆了==+！");//开馆

}

publicstaticvoidclose(){//闭馆

System.out.println("果龟早点睡，小心秃头==+！");

}

publicdefaultvoidBorrowBooks(){

System.out.println("欢迎这位bxg=0=！");//借书

}

publicdefaultvoidReturnBooks(){

System.out.println("你确定好了还书吗？小心学校搬走了！");//还书

}

}

//Library抽象类

abstractclassLibrary{

publicstaticintnum=14823;//设置图书馆藏书有一万四千八百二十三册

publicabstractvoidsetBorrowBooks(intn);

publicabstractvoidsetReturnBooks(intn);

}

//Teacher类：表示老师来借书

classTeacherextendsLibraryimplementsBorrow{

//设置要借多少书

@Override

publicvoidsetBorrowBooks(intn){

num=num-n;

System.out.println("糖糖老师借走了"+n+"本书,图书馆剩余"+num+"本书。");

}

@Override

publicvoidsetReturnBooks(intn){

num=num+n;

System.out.println("糖糖老师归还了"+n+"本书,图书馆剩余"+num+"本书。");

}

}

//Student类：表示学生来借书

classStudentextendsLibraryimplementsBorrow{

@Override

publicvoidsetBorrowBooks(intn){

num=num-n;

System.out.println("果龟借走了"+n+"本书,图书馆剩余"+num+"本书。");

}

@Override

publicvoidsetReturnBooks(intn){

num=num+n;

System.out.println("果龟归还了"+n+"本书,图书馆剩余"+num+"本书。");

}