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java类与应用题目代码 java类例题
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java题目,要求写代码
Book.java
package com.books;
public abstract class Book {
private int page;
private double price;
private double zheKou;
public abstract void printPrice();
public Book(int page, double price, double zheKou) {
super();
this.page = page;
this.price = price;
this.zheKou = zheKou;
}
public int getPage() {
return page;
}
public void setPage(int page) {
this.page = page;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
public double getZheKou() {
return zheKou;
}
public void setZheKou(double zheKou) {
this.zheKou = zheKou;
}
}
JiaoCai.java
package com.books;
public class JiaoCai extends Book{
public JiaoCai(int page, double price, double zheKou) {
super(page, price, zheKou);
}
@Override
public void printPrice() {
System.out.println(getPage() * 0.05 * getZheKou() * getPrice());
}
}
KeJi.java
package com.books;
public class KeJi extends Book {
public KeJi(int page, double price, double zheKou) {
super(page, price, zheKou);
}
@Override
public void printPrice() {
System.out.println(getPage() * 0.1 * getZheKou() * getPrice());
}
}
WenYi.java
package com.books;
public class WenYi extends Book{
public WenYi(int page, double price, double zheKou) {
super(page, price, zheKou);
}
@Override
public void printPrice() {
System.out.println(getPage() * 0.08 * getZheKou() * getPrice());
}
}
测试类。Test.java
package com.books;
public class Test {
public static void main(String[] args) {
int page = 530;
double zheKou = 0.7;
double price = 100;
Book book = new KeJi(page, price, zheKou);
book.printPrice();
book = new WenYi(page, price, zheKou);
book.printPrice();
book = new JiaoCai(page, price, zheKou);
book.printPrice();
}
}
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相关问答
Q1: java题目代码？
代码如下java类与应用题目代码，Rectangle类在java.lang包下有同名类java类与应用题目代码，如需引包请注意java类与应用题目代码，望采纳。
补充java类与应用题目代码：
Rectangle类
package com.baidu.question183173554138589044;
public class Rectangle {
private double width;
private double height;
public void setRectangle(int w, int h){
if(w0 h0){
width = w;
height = h;
}else{
System.out.println("错误java类与应用题目代码：长宽需要大于0");
}
}
public double getArea() {
return width*height;
}
}
运行主类
package com.baidu.question183173554138589044;
public class Main {
public static void main(String[] args) {
Rectangle rect = new Rectangle();
rect.setRectangle(5,6);
System.out.println(rect.getArea());
}
}
Q2: 有九道JAVA与面向对象的实践题目不会做啊！求高手把代码给我下可以吗？谢谢啦
7.
!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ";quot;
html
head
title计算器/title
style type="text/css"
input{
height:1.5em;}
.style1{
font-size:18px}
.height{
height:1.2em;}
/style
script language="javascript"
function computer(op){
var num1,num2,result;
num1 = parseFloat(document.form1.textname1.value);
num2 = parseFloat(document.form1.textname2.value);
if(op=="+")
result = num1 + num2;
document.form1.textResult.value=result;
if(op=="-")
result = num1 - num2;
document.form1.textResult.value = result;
if(op=="*")
result = num1 * num2;
document.form1.textResult.value = result;
if(op=="/" num2!=0)
result = num1/num2;
document.form1.textResult.value = result;
}
/script
/head
body
form name="form1"
center
table width="500" height="300" border="0" background="images/water001.jpg"
tr
td width="183" height="61"img src="images/baidu_logo.gif" width="182" height="54"//td
td width="219"span class="style1"百度计算器/span/td
/tr
tr
td colspan="2"span class="style1"第一个数java类与应用题目代码：input type="text" name="textname1"//span/td
/tr
tr
td colspan="2"span class="style1"第二个数java类与应用题目代码：input type="text" name="textname2"//span/td
/tr
tr
td colspan="2"
input class="height" type="button" value=" + " onClick="computer('+')"/nbsp;nbsp;nbsp;
input class="height" type="button" value=" - " onClick="computer('-')"/nbsp;nbsp;nbsp;
input class="height" type="button" value=" * " onClick="computer('*')"/nbsp;nbsp;nbsp;
input class="height" type="button" value=" / " onClick="computer('/')"/
/td
/tr
tr
td colspan="2"span class="style1"计算结果：input type="text" name="textResult"//span/td
/tr
/table
/center
/form
/body
/html
Q3: 一道Java编程题目，新手求详细代码
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class _1 {
/**
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
String zifuchuan = new String("");
int hanzishu = 0;
int zimu = 0;
int kongge = 0;
int shuzi = 0;
int qita = 0;
System.out.print("请输入一行字符：");
BufferedReader stdin = new BufferedReader(new InputStreamReader(
System.in));
zifuchuan = stdin.readLine();
byte[] bytes = zifuchuan.getBytes();
for (int i = 0; i bytes.length; i++) {
if ((bytes[i] = 65 bytes[i] = 90)
|| (bytes[i] = 97 bytes[i] = 122))
zimu++;
else if (bytes[i] == 32)
kongge++;
else if (bytes[i] = 48 bytes[i] = 57)
shuzi++;
else if (bytes[i] 0)
hanzishu++;
else
qita++;
}
System.out.println("字符串所占字节个数为：" + bytes.length);
System.out.println("汉字个数为：" + hanzishu / 2);
System.out.println("英文字母个数为：" + zimu);
System.out.println("空格个数为：" + kongge);
System.out.println("数字个数为：" + shuzi);
System.out.println("其他字符个数为：" + qita);
}
}
Q4: 求助大神如何用Java写出这两个题目的代码？
第一题
package baidu;
public class Student {
protected String name;
protected int age;
public Student(String name, int age) {
this.name = name;
this.age = age;
}
public void show(){
System.out.println("name = " + name);
System.out.println("age = " + age);
}
}
---------------------------------
package baidu;
public class Undergraduate extends Student {
private String degree;
public Undergraduate(String name, int age, String degree) {
super(name, age);
this.degree = degree;
}
public void show(){
System.out.println("name = " + name);
System.out.println("age = " + age);
System.out.println("degree = " + degree);
}
}
------------------------
package baidu;
public class TestRun {
public static void main(String[] args) {
Student s = new Student("singi",12);
s.show();
Undergraduate ug = new Undergraduate("lily",23,"本科");
ug.show();
}
}
输出:
name = singi
age = 12
name = lily
age = 23
degree = 本科
第二题:
package baidu;
public class Man {
String name;
public Man(String name) {
this.name = name;
}
public void business(){
System.out.println("在方法内输出谈生意");
}
}
----------------
package baidu;
public class SuperMan extends Man {
String name;
public SuperMan(String name, String name1) {
super(name);
this.name = name1;
}
@Override
public void business() {
System.out.println("在方法内输出谈几个亿的大单子");
}
public void fly(){
System.out.println("在方法内输出超人不会飞");
}
}
------------------
package baidu;
public class TestMan {
public static void main(String[] args) {
Man m = new Man("singi");
System.out.println(m.name);
m.business();
SuperMan sm = new SuperMan("lily","xiaoming");
System.out.println(sm.name);
sm.business();
sm.fly();
}
}
输出:
singi
在方法内输出谈生意
xiaoming
在方法内输出谈几个亿的大单子
在方法内输出超人不会飞
Q5: java练习题求完整代码
按照题目要求编写的用javaBean规范设计的学生类Student的Java程序如下
需要创建user.java.test包,把Student.java文件和Test.java文件放入包中,编译Student.java文件并且编译运行Test.java文件得到运行结果
Student.java文件代码如下
package user.java.test;
import java.io.Serializable;
public class Student implements Serializable{
private static final long serialVersionUID = 1L;
private String no;
private String name;
private double score;
public Student(){}
public Student(String no,String name,double score){
this.no=no;
this.name=name;
this.score=score;
}
public String getNo(){ return no;}
public void setNo(String no){ this.no=no;}
public String getName(){ return name;}
public void setName(String name){ this.name=name;}
public double getScore(){ return score;}
public void setScore(double score){ this.score=score;}
public String toString(){
return "学号:"+no+",姓名:"+name+",成绩:"+score;
}
public static double getAvg(Student[] sArray){
double sum=0,avg;
for(int i=0;isArray.length;i++){
sum=sum+sArray[i].getScore();
}
avg=sum/sArray.length;
return avg;
}
}
Test.java文件代码如下
package user.java.test;
public class Test{
public static void main(String[] args){
Student[] sArray=new Student[5];
sArray[0]=new Student("001","张三",89.5);
sArray[1]=new Student("002","李四",82.5);
sArray[2]=new Student("003","王五",93);
sArray[3]=new Student("004","赵六",73.5);
sArray[4]=new Student("005","孙七",66);
System.out.println("这些学生的平均分:"+Student.getAvg(sArray));
for(int i=0;isArray.length;i++){
System.out.println(sArray[i].toString());
}
}
}
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