編寫B(tài)ook.java

public class Book {

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private String title;

private Date pdate;

private int words;

public double price(){

日期這里用一個類處理比較簡單，不知道你用沒用過

SimpleDateFormat sdf = new SimpleDateFormat("MM");

month = sdf.format(pdate);

double xs = 0d;

if (month = 6){

xs = 1.2;

} else {

xs = 1.17;

}

return words / (1000 * 4.5) * xs;

}

}

這里不好空格，你自己格式化一下吧。

get/set方法沒寫

自己定義個main方法測一下吧

JAVA題：編寫一個Book類用于描述圖書，要求如下：

public class Book {

private String title ;

private String author;

private int sell;

public Book(){

}

public Book(String title,String author,int sell){

this.title=title;

this.author=author;

this.sell=sell;

}

public String getTitle() {

return title;

}

public void setTitle(String title) {

this.title = title;

}

public String getAuthor() {

return author;

}

public void setAuthor(String author) {

this.author = author;

}

public int getSell() {

return sell;

}

public void setSell(int sell) {

this.sell = sell;

}

public String toString() {

return "D [title=" + title + ", author=" + author + ", sell=" + sell

+ "]";

}

}

Java編程：創(chuàng)建一個Book類包含兩個String類型私有屬性name(書名)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("數(shù)據(jù)結構","高等教育"));

c1.add(new?Book("操作系統(tǒng)","電子工業(yè)出版社"));

c1.add(new?Book("Java","電子工業(yè)出版社"));

//~?c2?add?data?----------------------------------------------------------------

c2.add(new?Book("操作系統(tǒng)","電子工業(yè)出版社"));

c2.add(new?Book("數(shù)據(jù)庫系統(tǒng)","清華大學出版社"));

Book?searchBook?=?new?Book("Java","機械工業(yè)出版社");

System.out.println("c1中是否包含書名為Java，出版社為機械工業(yè)出版社的圖書信息:"+?(c1.contains(searchBook)?"包含":"不包含"));

c1.removeAll(c2);

System.out.println("差以后c1的元素個數(shù):"+c1.size());

for(IteratorBook?iterator?=?c1.iterator();iterator.hasNext();System.out.println(iterator.next()));

}

}

class?Book?{

private?String?name;//書名

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編程：創(chuàng)建一個Book類包含兩個String類型私有屬性name(書名)和publish(出

我寫了一個，方法可能有點麻煩，但是要求實現(xiàn)了

book類：

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() {

}

}

測試類：

public class TestBook {

public static void main(String[] args) {

Book book1=new Book("數(shù)據(jù)結構", "高等教育");

Book book2=new Book("操作系統(tǒng)", "電子工業(yè)出版社");

Book book3=new Book("Java", "電子工業(yè)出版社");

Book book4=new Book("數(shù)據(jù)結構", "清華大學出版社");

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("機械工業(yè)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("書名："+b.getName());

System.out.println("出版社："+b.getPublish());

}

}

}

文章標題：book類java代碼 java代碼教程
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