「java创建book」JAVA创建集合
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本文目录一览：
- 1、java 创建一个Book类？
- 2、Java编程：创建一个Book类包含两个String类型私有属性name(书名)和publish(出
- 3、Java编程：创建一个Book类包含两个String类型私有属性name(书名)和publish(
- 4、java创建一个图书类
- 5、java编写一个book
java 创建一个Book类？
package cn;
import java.math.BigDecimal;
public class Book implements Comparable{
private String user;
private String bookName;
private BigDecimal price;
public Book(){
}
public Book(String user, String bookName, BigDecimal price) {
this.user = user;
this.bookName = bookName;
this.price = price;
}
public String getUser() {
return user;
}
public void setUser(String user) {
this.user = user;
}
public String getBookName() {
return bookName;
}
public void setBookName(String bookName) {
this.bookName = bookName;
}
public BigDecimal getPrice() {
return price;
}
public void setPrice(BigDecimal price) {
this.price = price;
}
@Override
public int compareTo(Object o) {
if(o instanceof Book) {
Book book = (Book) o;
if(this.price.compareTo(book.price) -1)
return 1;
else if(this.price.compareTo(book.price)==0)
return 0;
else return -1;
}
return 0;
}
}
package cn;
import java.math.BigDecimal;
import java.util.Arrays;
import java.util.Scanner;
public class BookTest {
public static void main(String[] args) {
Book[] book = new Book[4];
for (int i = 0; i book.length; i++) {
book[i] = new Book();
Scanner sc = new Scanner(System.in);
System.out.print("请输入作者：");
String user = sc.nextLine();
book[i].setUser(user);
System.out.print("请输入书名：");
String bookName = sc.nextLine();
book[i].setBookName(bookName);
System.out.print("请输入价格：");
BigDecimal price = sc.nextBigDecimal();
book[i].setPrice(price);
}
Arrays.sort(book);
for (Book value : book) {
System.out.println("作者：" + value.getUser() + " 书名：" + value.getBookName() + " 价格：" + value.getPrice());
}
}
}
Java编程：创建一个Book类包含两个String类型私有属性name(书名)和publish(出
我写了一个，方法可能有点麻烦，但是要求实现了
book类：
public class Book {
private String name;
private String publish;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPublish() {
return publish;
}
public void setPublish(String publish) {
this.publish = publish;
}
public Book(String name, String publish) {
super();
this.name = name;
this.publish = publish;
}
public Book() {
}
}
测试类：
public class TestBook {
public static void main(String[] args) {
Book book1=new Book("数据结构", "高等教育");
Book book2=new Book("操作系统", "电子工业出版社");
Book book3=new Book("Java", "电子工业出版社");
Book book4=new Book("数据结构", "清华大学出版社");
CollectionBook c1=new ArrayList();
CollectionBook c2=new ArrayList();
CollectionBook c3=new ArrayList();
c1.add(book1);
c1.add(book2);
c1.add(book3);
c2.add(book2);
c2.add(book4);
boolean cont=false;
for(Book book:c1){
if(book.getName().equals("Java")book.getPublish().equals("机械工业出版社")){
cont=true;
}
}
System.out.println(cont);
for(Book book02:c2){
boolean a=true;
for(Book book01:c1){
if(book01.getName().equals(book02.getName())book01.getPublish().equals(book02.getPublish())){
a=false;
}
}
if(a){
c3.add(book02);
}
}
for(Book b:c3){
c1.add(b);
}
IteratorBook iterator=c1.iterator();
while(iterator.hasNext()){
Book b=iterator.next();
System.out.println("书名："+b.getName());
System.out.println("出版社："+b.getPublish());
}
}
}
Java编程：创建一个Book类包含两个String类型私有属性name(书名)和publish(
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
public class HomeWork {
public static void main(String[] args) {
CollectionBook c1 = new ArrayListBook();
CollectionBook c2 = new ArrayListBook();
//~ c1 add data ----------------------------------------------------------------
c1.add(new Book("数据结构","高等教育"));
c1.add(new Book("操作系统","电子工业出版社"));
c1.add(new Book("Java","电子工业出版社"));
//~ c2 add data ----------------------------------------------------------------
c2.add(new Book("操作系统","电子工业出版社"));
c2.add(new Book("数据库系统","清华大学出版社"));
Book searchBook = new Book("Java","机械工业出版社");
System.out.println("c1中是否包含书名为Java，出版社为机械工业出版社的图书信息:"+ (c1.contains(searchBook)?"包含":"不包含"));
c1.removeAll(c2);
System.out.println("差以后c1的元素个数:"+c1.size());
for(IteratorBook iterator = c1.iterator();iterator.hasNext();System.out.println(iterator.next()));
}
}
class Book {
private String name;//书名
private String publish;//出版社
public Book(String name, String publish) {
this.name = name;
this.publish = publish;
}
//~ Setter Getter Method ----------------------------------------------------------------
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPublish() {
return publish;
}
public void setPublish(String publish) {
this.publish = publish;
}
//~ Override equals Method ----------------------------------------------------------------
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Book other = (Book) obj;
if (name == null) {
if (other.name != null)
return false;
}
else if (!name.equals(other.name))
return false;
if (publish == null) {
if (other.publish != null)
return false;
}
else if (!publish.equals(other.publish))
return false;
return true;
}
//~ Override toString Method ----------------------------------------------------------------
@Override
public String toString() {
return "Book [name=" + name + ", publish=" + publish + "]";
}
}
java创建一个图书类
public class Book {
public String name; //书名
public String author; //作者
public String publisher; //出版社
public String state; //状态：STATE_IN 在馆 STATE_OUT 外借
public static String STATE_IN = "in";
public static String STATE_OUT = "out";
public Book(String name, String author, String publisher){
this.name = name;
this.author = author;
this.publisher = publisher;
}
public Book(String name, String author, String publisher, String state){
this.name = name;
this.author = author;
this.publisher = publisher;
this.state = state;
}
public static void main(String[] args) {
Book book1 = new Book("西游记", "吴承恩", "新华出版社");
book1.setState(STATE_IN);
Book book2 = new Book("水浒传", "施耐庵", "新华出版社", STATE_IN);
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
public String getPublisher() {
return publisher;
}
public void setPublisher(String publisher) {
this.publisher = publisher;
}
public String getState() {
return state;
}
public void setState(String state) {
this.state = state;
}
}
java编写一个book
class Book2 {
public String title;
public int pageNum = 200;
public Book2(){}
public Book2(String title) {
this.title = title;
}
public Book2(int pageNum) {
if(pageNum 200) {
System.out.println("页数小于200,非法!");
pageNum = 200;
}else {
this.pageNum = pageNum;
}
}
public Book2(String title, int pageNum) {
this.title = title;
if(pageNum 200) {
System.out.println("页数小于200,非法!");
pageNum = 200;
}else {
this.pageNum = pageNum;
}
}
public void detail() {
System.out.println(title + " : " + pageNum);
}
}
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发布于：2022-12-13，除非注明，否则均为原创文章，转载请注明出处。