java面向对象课程设计指导书--图书信息管理系统毕业设计

} public String getMonth() { return Month; 10 } public void setMonth(String month) { if (Integer. parseInt (month)>0&&Integer. parseInt (month)<=12) { Month = month; }} public String getDay() { return Day; } public void setDay(String day) { if (Integer. parseInt (day)>0&&Integer. parseInt (day)<=31) { Day = day; }} public String getBname() { return Bname; } public void setBname(String bname) { Bname = bname; } public String getBauthor() { return Bauthor; } public void setBauthor(String bauthor) { Bauthor = bauthor; } public String getPress() { return Press; } public void setPress(String press) { Press = press; } public String getBinfo() { return Binfo; } public void setBinfo(String binfo) { Binfo = binfo; } public String getBclass() { return Bclass; } public void setBclass(String bclass) {