📄 book.java
字号:
package bookshop;
import java.sql.*;
import bookshop.*;
public class Book {
protected String isbn;
protected String title;
protected float price;
protected int buynum;
public Book(String _isbn, int _buynum){
try{
DBSQLManager dbsm = new DBSQLManager();
String sql="SELECT ISBN,TITLE,PRICE FROM bookinfo WHERE ISBN='"+_isbn+"'";
dbsm.setSqlStr(sql);
dbsm.executeQuery();
ResultSet rs = dbsm.getRs();
rs.next();
isbn = _isbn;
title = rs.getString("TITLE");
price = rs.getFloat("PRICE");
buynum = _buynum;
dbsm.close();
}
catch (Exception e){
System.out.println(e.toString());
}
}
public void setIsbn(String newIsbn){
this.isbn = newIsbn;
}
public String getIsbn(){
return isbn;
}
public void setTitle(String newTitle){
this.title = newTitle;
}
public String getTitle(){
return title;
}
public void setPrice(float newPrice){
this.price = newPrice;
}
public float getPrice(){
return price;
}
public void setBuynum(int newBuynum){
this.buynum = newBuynum;
}
public int getBuynum(){
return buynum;
}
}
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -