簡易圖書管理系統——Java實作
本人還是小白，閑來無事，跟著網路上大牛們學習了這段程式，本身難度并不大，但自己在很多細節地方考慮的還是不夠周全，一些功能還未實作，代碼的可讀性也不是很高，所以還請各位大牛能多指點！
主要分為3類，書本類Book，圖書管理類LibraryManager，測驗類Test，
Java Date格式化輸出自行在CSDN上自己找哈，有很多，我在這里就偷個懶，嘻嘻！
代碼附上：
Book類：
主要就是書本屬性，以及set與get方法，可根據自身需求修改
import java.util.Date;
public class Book {
private String name;//書名
private int id;//序列號
private int price;//價格
private String authon;//作者
private boolean statc = true;//借閱狀態ture在館，false借出
private Date borrowData;//借閱日期
private int count;//被借次數
public Date getBorrowData() {
return borrowData;
}
public void setBorrowData(Date borrowData) {
this.borrowData = borrowData;
}
public int getCount() {
return count;
}
public void setCount() {
this.count++;
}
public boolean getStatc() {
return statc;
}
public void setStatc(boolean statc) {
this.statc = statc;
}
public Book(String name, int id, int price, String authon) {//建構式
this.name = name;
this.id = id;
this.price = price;
this.authon = authon;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public int getPrice() {
return price;
}
public void setPrice(int price) {
this.price = price;
}
public String getAuthon() {
return authon;
}
public void setAuthon(String authon) {
this.authon = authon;
}
}
LibraryManager類：
其中注釋掉的是重復的
可讀性有點差勁，希望大牛們多指點！
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Scanner;
public class LibraryManager {
private Book[] book = new Book[10];//創建陣列存盤書本
Scanner input = new Scanner(System.in);
Date date = new Date();
DateFormat format = new SimpleDateFormat("yyyy-MM-dd");
public void init(){//初始化
Book book1 = new Book("《平凡的世界》",01,50,"賈平凹");
Book book2 = new Book("《巴黎圣母院》",02,35,"雨果");
Book book3 = new Book("《金陵十三釵》",03,26,"嚴歌苓");
book[0] = book1;
book[1] = book2;
book[2] = book3;
}
public void menu(){//界面選擇
System.out.println("-------歡迎進入圖書管理系統--------");
System.out.println("請根據提示選擇:");
System.out.println("1.增加圖書\t\t2.洗掉圖書\t\t3.借閱圖書\n4.歸還圖書\t\t5.圖書借閱排行\t"+"6.書籍目錄\n"+"0.退出系統");
int choice = input.nextInt();
switch (choice){
case 1:
addBook();
break;
case 2:
deleteBook();
break;
case 3:
checkOutBook();
break;
case 4:
returnBook();
break;
case 5:
rankBook();
break;
case 6:
showBook();
break;
case 0:
System.exit(0);
default:
}
}
public void showBook(){//輸出圖書
for(Book x :book) {
if (x!=null) {
if (x.getStatc())
System.out.println("名稱：" + x.getName() +
"\t\t\t序列號：" + x.getId() + "\t\t作者：" + x.getAuthon() +
"\t\t被借"+x.getCount()+"次"+"\t\t狀態：入藏");
else
System.out.println("名稱：" + x.getName() +
"\t\t\t序列號：" + x.getId() + "\t\t作者：" + x.getAuthon() +
"\t\t被借"+x.getCount()+"次"+"\t\t狀態："+format.format(x.getBorrowData())+"借出");
}
}
}
public void rankBook() {//按借閱次數降序排序
Book[] tempbook = new Book[book.length];//創建一個臨時陣列使之等于原陣列
for(int i = 0;i<book.length;i++){
if(book[i] != null){
tempbook[i] = book[i];
}
}
System.out.println("借書次數由高到低為:");
int i, j;
for (i = 0;i < tempbook.length-1;i++) {//冒泡排序
for (j = 0; j < tempbook.length - i - 1; j++) {
if (tempbook[j] != null && tempbook[j + 1] != null) {
if (tempbook[j].getCount() < tempbook[j + 1].getCount()) {
Book temp = tempbook[j];
tempbook[j] = tempbook[j + 1];
tempbook[j + 1] = temp;
}
}
}
}
for (Book x : tempbook) {
if (x != null) {
if (x.getStatc())
System.out.println("名稱：" + x.getName() +
"\t\t序列號：" + x.getId() + "\t\t作者：" + x.getAuthon() +
"\t\t被借" + x.getCount() + "次" + "\t\t狀態：入藏");
else
System.out.println("名稱：" + x.getName() +
"\t\t序列號：" + x.getId() + "\t\t作者：" + x.getAuthon() +
"\t\t被借" + x.getCount() + "次" + "\t\t狀態：" + x.getBorrowData() + "借出");
}
}
}
public void addBook(){//增加圖書
String name,authon;
int id,price,i;
System.out.println("請輸入書籍名稱,序列號,價格,作者");
name = input.next();
id = input.nextInt();
price = input.nextInt();
authon = input.next();
Book temp = new Book(name,id,price,authon);
for(i = 0;i<book.length;i++){
if(book[i]==null)
break;
}
book[i] = temp;
}
public int findName(int location){//查找與name相同的下標
String name = input.next();
for(int j = 0;j < book.length;j++){
if(book[j].getName().equals(name)){
location = j;
break;
}
}
return location;
}
public int findId(int location){//查找與序列號相同的下標
int n = input.nextInt();
for(int j = 0;j < book.length;j++){
if(book[j].getId()==n){
location = j;
break;
}
}
return location;
}
public void deleteBook(){//洗掉圖書
System.out.println("1.按名稱洗掉\t"+"2.按序列號洗掉");
int i = input.nextInt(),location = -1;//待洗掉下標
switch (i){
case 1:
System.out.println("請輸入要洗掉的書籍名稱:");
// String name = input.next();
// for(int j = 0;j < book.length;j++){
// if(book[j].getName().equals(name)){
// location = j;
// break;
// }
// }
location = findName(location);
break;
case 2:
System.out.println("請輸入要洗掉書籍的序列號:");
// int n = input.nextInt();
// for(int j = 0;j < book.length;j++){
// if(book[j].getId()==n){
// location = j;
// break;
// }
// }
location = findId(location);
break;
}
//進行移動
int start = location,end;
int nulllocation = book.length;//null的下標
for(int j = 0;j<book.length;j++){
if(book[j] == null) {
nulllocation = j;
break;
}
}
end = nulllocation-1;
for(int j = start;j < end;j++){
if(j==book.length-1)
book[j] = null;
else
book[j] = book[j+1];
}
book[end] = null;
}
public void checkOutBook(){//借閱圖書
System.out.println("1.按名稱借閱\t"+"2.按序列號借閱");
int i = input.nextInt(),location = -1;//待借閱下標
switch (i){
case 1:
System.out.println("請輸入要借閱的書籍名稱:");
// String name = input.next();
// for(int j = 0;j < book.length;j++){
// if(book[j].getName().equals(name)){
// location = j;
// break;
// }
// }
location = findName(location);
break;
case 2:
System.out.println("請輸入要借閱書籍的序列號:");
// int n = input.nextInt();
// for(int j = 0;j < book.length;j++){
// if(book[j].getId()==n){
// location = j;
// break;
// }
// }
location = findId(location);
break;
}
book[location].setCount();//被借次數+1
if(book[location].getStatc()){
Date time = new Date();
book[location].setBorrowData(time);
book[location].setStatc(false);
}else {
System.out.println(book[location].getName()+"于"+book[location].getBorrowData()+"已借出！");
}
}
public void returnBook(){//歸還圖書
System.out.println("1.按書名歸還\t2.按序列號歸還");
int i = input.nextInt(),location = -1;//待歸還下標
switch (i){
case 1:
System.out.println("請輸入你要歸還的書名");
// String name = input.next();
// for(int j = 0;j < book.length;j++){
// if(book[j].getName().equals(name)){
// location = j;
// break;
// }
// }
location = findName(location);
break;
case 2:
System.out.println("請輸入你要歸還的序列號");
// int n = input.nextInt();
// for(int j = 0;j < book.length;j++){
// if(book[j].getId()==n){
// location = j;
// break;
// }
// }
location = findId(location);
break;
}
book[location].setStatc(true);
book[location].setBorrowData(null);
}
}
Test類：
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
String n = null;
LibraryManager manager = new LibraryManager();
manager.init();
do {//控制是否退出
manager.menu();
System.out.println("回主選單？y(是)/其他(結束)");
n = input.next();
}while ("y".equals(n));
}
}
運行結果圖：
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標籤：其他