java单链表实现书籍管理系统

本文实例为大家分享了java单链表实现书籍管理系统的具体代码，供大家参考，具体内容如下

书籍管理系统功能:

1).添加图书
2).删除图书
3).查看图书
4).修改书籍
5).修改排序方式
6).模糊查询
7).退出程序

代码实现:

book类

package com.bookmanagement.book;

public class book {//书类
 public string no;
 public string name;
 public int price;
 public string type;
 public book next;
 
 public book(string bno,string bname,int bprive,string btype) {
  this.no=bno;
  this.name=bname;
  this.price=bprive;
  this.type=btype;
 }
 public book() {
  
 }
 
 //tostring方法
 @override
 public string tostring() {
  return "  bookno=" + no + ",  bookname=" + name + ",  bookprice=" + price + ", booktype=" + type;
 }
 
 
}

1).添加图书

package com.bookmanagement.function;
import java.util.scanner;
import com.bookmanagement.book.*;
public class addbook {
 static scanner input = new scanner(system.in);
 public static void addbook() {
  
  system.out.println("请输入书编号:");
  string no = input.next();
  system.out.println("请输入书名字:");
  string name = input.next();
  system.out.println("请输入书价格:");
  int price = input.nextint();
  system.out.println("请输入书类型:");
  string type = input.next();
  book bo = new book(no,name,price,type);
  add(bo);
 }
 public static void add(book bo) {
  book temp = test.head;//把头节点赋值给一个辅助类
  boolean falg = false;
  while(true) {
   if(temp.next == null) {//判断链表是否到最后
    break;
   }
   if(test.stroing %2 == 1) {//判断是否修改了显示顺序
    if(temp.next.no.comparetoignorecase(bo.no)<0) {//寻找适合的位置插入节点//跳过头节点
     break;
    }else if(temp.next.no.comparetoignorecase(bo.no)==0){
     falg = true;
     break;
    }
   }else {
    if(temp.next.no.comparetoignorecase(bo.no)>0) {//寻找适合的位置插入节点//跳过头节点
     break;
    }else if(temp.next.no.comparetoignorecase(bo.no)==0){
     falg = true;
     break;
    }
    
    
   }
   //节点后移
   temp = temp.next;
  }
  if(falg) {//判断是否输入相同的编号
   system.out.println("插入"+bo.no+"的数据编号已存在");
  }else {
   bo.next = temp.next;
   temp.next = bo;
  }
  
 }
 
}

2).删除图书

package com.bookmanagement.function;
import java.util.scanner;
import com.bookmanagement.book.*;
public class dropbook {
 static scanner input = new scanner(system.in);
 public static void dropbook() {
  system.out.println("请输入需要删除图书的编号:");
  string no = input.next();
  book temp = test.head;
  boolean falg = false;
  while(true) {
   if(temp.next == null) {//判断链表是否到最后
    break;
   }
   if(temp.next.no.comparetoignorecase(no)==0) {
    falg = true;
    break;
   }
   temp = temp.next;//temp位移
  }
  if(falg) {
    temp.next=temp.next.next;//找到temp.next域指向删除的编号让下一个next覆盖
    //如果需要删除的编号下一个next域指向的是null则temp.next域则下一个指向为空
    system.out.println("删除成功");
  }else {
   system.out.println("没有找到该书籍");
  }
  
   
 }
}

3).查看图书

package com.bookmanagement.function;
import com.bookmanagement.book.*;
public class showbook {
 public static void showbook() {
  if(test.head.next == null) {
   system.out.println("没有书籍数据");
   return;
  }
  book temp = test.head.next;//输出头节点下一个节点
  int sum=0;
  while(true) {
   if(temp == null) {
    break;
   }
   system.out.println(temp);
   sum++;
   temp = temp.next;//temp位移
  }
  system.out.println("书籍总数为:"+sum);
  
 }
}

4).修改书籍

package com.bookmanagement.function;
import java.util.scanner;
import com.bookmanagement.book.*;
public class modify {
 static scanner input = new scanner(system.in);
 public static void modidy() {
  system.out.println("请输入需要修改的图书的编号:");
  string no = input.next();
  book temp = test.head;
  boolean ts = false;
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.no.comparetoignorecase(no)==0) {
    ts = true;
    break;
   }
   temp = temp.next;
  }
  if(ts) {
   system.out.println("修改:1.名字 2.编号 3.价格 4.类型");
   int falg = input.nextint();
   switch (falg) {
   case 1:
    system.out.println("请输入需要修改的名字:");
    string name = input.next();
    temp.next.name = name;
    break;
   case 2:
    system.out.println("请输入需要修改的编号:");
    string mno = input.next();
    temp.next.no = mno;
    book change = temp.next;
    temp.next=temp.next.next;
    addbook.add(change);
    //重新调用add方法
    break;
   case 3:
    system.out.println("请输入需要修改的价格:");
    int prive = input.nextint();
    temp.next.price = prive;
    break;
   case 4:
    system.out.println("请输入需要修改的类型:");
    string type= input.next();
    temp.next.type = type;
    break;
   default:system.out.println("输入有误");
    break;
   }
  }else{
   system.out.println("没有找到该书籍");
  } 
 }
}

5).修改排序方式

package com.bookmanagement.function;
import java.util.scanner;
import com.bookmanagement.book.*;
public class flash {
 static scanner input = new scanner(system.in);
 public static void flashbook() {
  book everlist = new book("","",0,"");
  book temp = test.head.next;//把有数据的赋值给辅助类
  book next = null;
  if(temp.next == null) {//链表只有一个数据不需要排序
   system.out.println("链表只有一个数据不需要逆序");
   return;
  }
  while(temp != null) {
   next = temp.next;
   temp.next = everlist.next;
   everlist.next = temp;
   temp = next;
  }
  test.head.next = everlist.next;
  if(test.stroing%2==1) {
   system.out.println("修改为降序");
  }else {
   system.out.println("修改为升序");
  }
 }
}

6).模糊查询

package com.bookmanagement.function;
import com.bookmanagement.book.*;
import java.util.scanner;
public class detailed {
 static scanner input = new scanner(system.in);
 public static void detailed() {
  system.out.println("功能:模糊查询");
   detalied1();
 }
 public static void detalied1() {
  system.out.println("输入需要查找的数据:1.书名2.编号3.价格4.类型");
  int falg = input.nextint();
  switch (falg) {
  case 1:
   detabookname();
   break;
  case 2:
   detabookno();
   break;
  case 3:
   detabookprice();
   break;
  case 4:
   detabooktype();
   break;
  default:
   break;
  }
 }
 public static void detabookname() {
  system.out.println("请输入模糊书名:");
  string name = input.next();
  book temp = test.head;
  boolean falg = false;
  if(test.head.next == null) {
   system.out.println("没有书籍信息");
   return;
  }
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.name.indexof(name)==0) {
    system.out.println(temp.next);
    falg = true;
   }
   temp = temp.next;
  }
  if(!falg) {
   system.out.println("没有找到该书籍信息");
  }
 }
 public static void detabookno() {
  system.out.println("请输入模糊编号:");
  string no = input.next();
  book temp = test.head;
  boolean falg = false;
  if(test.head.next == null) {
   system.out.println("没有书籍信息");
   return;
  }
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.no.indexof(no)==0) {
    system.out.println(temp.next);
    falg = true;
   }
   temp = temp.next;
  }
  if(!falg) {
   system.out.println("没有找到该书籍信息");
  }
 }
 static int price;
 public static void detabookprice() {
  system.out.print("输入符号:(>,<,=,>=,<=,!=):");
  string symbol = input.next();
  system.out.print("输入价格:");
  price = input.nextint();
  system.out.println();
  switch (symbol) {
  case ">":
   greaterprice();
   break;
  case "<":
   lessprice();
   break;
  case "=":
   equalprice();
   break;
  case ">=":
   greaterequaleprice();
   break;
  case "<=":
   lessequaleprice();
   break;
  case "!=":
   notequale();
   break;
  default:system.out.println("输入错误");
   break;
  }
 }
 public static void greaterprice() {
  book temp = test.head;
  boolean falg = false;
  if(test.head.next == null) {
   system.out.println("没有书籍信息");
  }
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.price>price) {
    system.out.println(temp.next);
    falg = true;
   }
   temp = temp.next;
  }
  if(!falg) {
   system.out.println("没有书籍符合信息");
  }
 }
 public static void lessprice() {
  book temp = test.head;
  boolean falg = false;
  if(test.head.next == null) {
   system.out.println("没有书籍信息");
  }
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.price<price) {
    system.out.println(temp.next);
    falg = true;
   }
   temp = temp.next;
  }
  if(!falg) {
   system.out.println("没有书籍符合信息");
  }
 }
 public static void equalprice() {
  book temp = test.head;
  boolean falg = false;
  if(test.head.next == null) {
   system.out.println("没有书籍信息");
  }
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.price==price) {
    system.out.println(temp.next);
    falg = true;
   }
   temp = temp.next;
  }
  if(!falg) {
   system.out.println("没有书籍符合信息");
  }
 }
 public static void greaterequaleprice() {
  book temp = test.head;
  boolean falg = false;
  if(test.head.next == null) {
   system.out.println("没有书籍信息");
  }
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.price>=price) {
    system.out.println(temp.next);
    falg = true;
   }
   temp = temp.next;
  }
  if(!falg) {
   system.out.println("没有书籍符合信息");
  }
 }
 public static void lessequaleprice() {
  book temp = test.head;
  boolean falg = false;
  if(test.head.next == null) {
   system.out.println("没有书籍信息");
  }
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.price<=price) {
    system.out.println(temp.next);
    falg = true;
   }
   temp = temp.next;
  }
  if(!falg) {
   system.out.println("没有书籍符合信息");
  }
 }
 public static void notequale() {
  book temp = test.head;
  boolean falg = false;
  if(test.head.next == null) {
   system.out.println("没有书籍信息");
  }
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.price!=price) {
    system.out.println(temp.next);
    falg = true;
   }
   temp = temp.next;
  }
  if(!falg) {
   system.out.println("没有书籍符合信息");
  }
 }
 public static void detabooktype() {
  system.out.println("请输入模糊类型:");
  string type = input.next();
  book temp = test.head;
  boolean falg = false;
  if(test.head.next == null) {
   system.out.println("没有书籍信息");
   return;
  }
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.type.indexof(type)==0) {
    system.out.println(temp.next);
    falg = true;
   }
   temp = temp.next;
  }
  if(!falg) {
   system.out.println("没有找到该书籍信息");
  }
 }
 
}

7).测试类

package com.bookmanagement.function;

import java.util.scanner;
import com.bookmanagement.book.*;
public class test {
 static int stroing=0;
 public static book head = new book("","",0,"");//建立链表头
 public static void main(string[] args) {
  scanner input = new scanner(system.in);
  system.out.println("-----欢迎进入图书管理系统-----");
  boolean temp = true;
  while(temp) {
   system.out.println("1).添加图书");
   system.out.println("2).删除图书");
   system.out.println("3).查看图书");
   system.out.println("4).修改书籍");
   system.out.println("5).修改排序方式");
   system.out.println("6).模糊查询");
   system.out.println("7).退出程序");
   int choose = input.nextint();
   switch (choose) {
   case 1:
    addbook.addbook();//添加书籍
    break;
   case 2:
    dropbook.dropbook();//删除书籍
    break;
   case 3:
    showbook.showbook();//查看书籍
    break;
   case 4:
    modify.modidy();//修改书籍
    break;
   case 5:
    stroing++;
    flash.flashbook();//修改排序方式
    break;
   case 6:
    detailed.detailed();//模糊查询
    break;
   case 7:
    temp = false;//退出程序
    break;
   default:system.out.println("输入错误");
    break;
   }
  }
  system.out.println("程序退出,欢迎下次使用");
  input.close();
 }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。