import java.util.*;
class BookInfo
{
BookInfo()
{
num = -1;
bookName = "No information";
author = "No information";
press = "No information";
ISBN = "No information";
borrowed = "No";
}
BookInfo( String sbn, String sa, String sp, String sISBN )
{
int n = Menus.NUMBER;
num = n;
bookName = sbn;
author = sa;
press = sp;
ISBN = sISBN;
borrowed = "No";
}
public void setNum( int n )
{
num = n;
}
public void setBookName( String n )
{
bookName = n;
}
public void setAuthor( String a )
{
author = a;
}
public void setPress( String p)
{
press = p;
}
public void setISBN( String i )
{
ISBN = i;
}
public void setBorrowed( String i )
{
borrowed = i;
}
public int getNum()
{
return num;
}
public String getBookName()
{
return bookName;
}
public String getAuthor()
{
return author;
}
public String getPress()
{
return press;
}
public String getISBN()
{
return ISBN;
}
public String getBorrowed()
{
return borrowed;
}
public void disp()
{
System.out.println( getNum() + "\t" + getBookName() + "\t\t" + getAuthor() + "\t\t" + getPress() + "\t\t" + getISBN() + "\t" + getBorrowed() );
}
private int num;
private String bookName;// 书名
private String author; // 作者
private String press; // 出版社
private String ISBN; // 每本书有唯一的ISBN号码
private String borrowed;// 是否被借出
}
class Menus
{
BookInfo[] numOfInfo;
Scanner s = new Scanner(System.in);
Menus()
{
numOfInfo = new BookInfo[MAX];
numOfInfo[NUMBER++] = new BookInfo("Java","King","机工","1782-546");
numOfInfo[NUMBER++] = new BookInfo("C++","Jone","机工","1632-896");
numOfInfo[NUMBER++] = new BookInfo("C#","Walter","电工","5682-154");
for( int i = NUMBER; i < MAX; ++i)
{
numOfInfo[i] = new BookInfo();
//numOfInfo[i].disp();
}
}
public void mainMenu()
{
System.out.println( "\n**************图书管理系统***************" );
System.out.println( " 1.添加书籍信息" );
System.out.println( " 2.查询书籍信息" );
System.out.println( " 3.显示书籍信息" );
System.out.println( " 4.删除书籍信息" );
System.out.println( " 5.借阅书籍" );
System.out.println( " 6.归还书籍" );
System.out.println( " 0.退出" );
System.out.println( "*****************************************" );
System.out.print( "------请选择相应的选项：" );
int choose = -1;
try
{
String sc = s.nextLine();
choose = Integer.parseInt(sc);
System.out.println();
}
catch(Exception e)
{
System.out.println("Enter error!");
mainMenu();
}
switch(choose)
{
case 1:
addMenu();
break;
case 2:
searchMenu();
break;
case 3:
dispMenu();
break;
case 4:
deleteMenu();
break;
case 5:
borrowedMenu();
break;
case 6:
restoreMenu();
break;
case 0:
System.exit(0);
break;
default:
System.out.println("Enter error! Please enter a integer between 0 and 6!");
mainMenu();
}
}
public void addMenu()
{
if( NUMBER >= MAX)
{
System.out.println( "最多只能存储" + MAX + "本书籍的信息！" );
mainMenu();
}
else
{
int n = ++NUMBER;
try
{
System.out.print( "请输入书名：" );
String sbn = s.nextLine();
System.out.println();
System.out.print( "请输入作者：" );
String a = s.nextLine();
System.out.println();
System.out.print( "请输入出版社：" );
String p = s.nextLine();
System.out.println();
System.out.print( "请输入ISBN号码：" );
String sISBN = s.nextLine();
System.out.println();
numOfInfo[n - 1].setNum( n );
numOfInfo[n - 1].setBookName( sbn );
numOfInfo[n - 1].setAuthor( a );
numOfInfo[n - 1].setPress( p );
numOfInfo[n - 1].setISBN( sISBN );
}
catch(Exception e)
{
System.out.println("错误,请重新输入!");
--NUMBER;
addMenu();
}
while(true)
{
try
{
System.out.print( "--是否继续输入(y/n): " );
String sin = s.nextLine();
System.out.println();
if( sin.equals("y") || sin.equals("Y"))
addMenu();
else
mainMenu();
break;
}
catch(Exception e)
{
System.out.println("错误,请重新输入!");
}
}
}
}
public void searchMenu()
{
if( NUMBER == 0)
{
System.out.println( "没有任何信息!" );
mainMenu();
}
else
{
System.out.println("\n-----查询书籍信息：");
System.out.println("1--按序号查询");
System.out.println("2--按书名查询");
System.out.println("3--按作者查询");
System.out.println("4--按出版社查询");
System.out.println("5--按ISBN查询");
System.out.println("0--返回上级菜单");
System.out.print( "------请选择相应的选项：" );
int choose = -1;
try
{
String sc = s.nextLine();
choose = Integer.parseInt(sc);
System.out.println();
}
catch(Exception e)
{
System.out.println("Enter error!");
searchMenu();
}
switch( choose )
{
case 1:
searchByNum();
break;
case 2:
searchByBookName();
break;
case 3:
