13518219792
第一题:
专注于为中小企业提供网站建设、网站制作服务,电脑端+手机端+微信端的三站合一,更高效的管理,为中小企业湄潭免费做网站提供优质的服务。我们立足成都，凝聚了一批互联网行业人才，有力地推动了上1000家企业的稳健成长，帮助中小企业通过网站建设实现规模扩充和转变。
Car.java
public class Car {
public String num;
public float price;
public Car(String num,float price){
this.num = num;
this.price=price;
System.out.println("车牌号为："+num+",价格为："+price);
}
}
测试类:
public class CarTest {
public static void main(String[] args) {
Car car = new Car("京P34E68", 100000.23f);
}
}
输出为：车牌号为：京P34E68,价格为：100000.23
第二题：
Student.java
public class Student {
private String num;
private String name;
private int age;
private String sex;
public String getNum() {
return num;
}
public void setNum(String num) {
this.num = num;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String tell() {
return "Student [num=" + num + ", name=" + name + ", age=" + age+ ", sex=" + sex + "]";
}
public static void main(String[] args) {
Student student = new Student();
student.setAge(18);
student.setNum("001");
student.setName("COLD");
student.setSex("男");
System.out.println(student.tell());
}
}
输出：Student [num=001, name=COLD, age=18, sex=男]
希望能帮到你，望采纳
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;public class ShoppingCartManager {
HashMapString, String hm=new HashMapString, String();
float totlePrice=0;
//添加book到购物车
public void addBook(String bookId,String bookQuantity){
if(hm.containsKey(bookId)){
int value=Integer.parseInt(hm.get(bookId));
value+=Integer.parseInt(bookQuantity);
hm.put(bookId, value+"");
}else{
hm.put(bookId, bookQuantity);
}
}
//修改数量
public void updateQuantity(String bookId,String bookQuantity){
hm.put(bookId, bookQuantity);
}
//获取购物车的所有信息 并计算总价
public ArrayListBookBean getShoppingCart(){
ArrayListBookBean al=new ArrayListBookBean();
IteratorString i=hm.keySet().iterator();
String ids="";
BookTableManager btm=new BookTableManager();
while(i.hasNext()){
ids=ids+","+i.next();
}
al= btm.selectByBookIds(ids);
totlePrice=0; //清空总价，防止无限累计
for(int j=0;jal.size();j++){
BookBean bb=al.get(j);
totlePrice+=bb.getPrice()*Integer.parseInt(getQuantityById(bb.getBookId()+""));
}
return al;
}
//获取总价
public float getTotlePrice(){
return totlePrice;
}
//根据ID获取数量
public String getQuantityById(String id){
String quantity=hm.get(id);
return quantity;
}
//清空购物车
public void clear(){
hm.clear();
}
//删除购物车中的一本书
public void deleteById(String id){
hm.remove(id);
}
}
import java.awt.*;
import java.awt.event.*;
class ShopFrame extends Frame implements ActionListener
{ Label label1,label2,label3,label4;
Button button1,button2,button3,button4,button5;
TextArea text;
Panel panel1,panel2;
static float sum=0.0f;
ShopFrame(String s)
{ super(s);
setLayout(new BorderLayout());
label1=new Label("面纸:3元",Label.LEFT);
label2=new Label("钢笔:5元",Label.LEFT);
label3=new Label("书:10元",Label.LEFT);
label4=new Label("袜子:8元",Label.LEFT);
button1=new Button("加入购物车");
button2=new Button("加入购物车");
button3=new Button("加入购物车");
button4=new Button("加入购物车");
button5=new Button("查看购物车");
text=new TextArea("商品有:"+"\n",5,10);
text.setEditable(false);
addWindowListener(new WindowAdapter()
{ public void windowClosing(WindowEvent e)
{ System.exit(0);
}
}
);
button1.addActionListener(this);
button2.addActionListener(this);
button3.addActionListener(this);
button4.addActionListener(this);
button5.addActionListener(this);
panel1=new Panel();
panel2=new Panel();
panel1.add(label1);
panel1.add(button1);
panel1.add(label2);
panel1.add(button2);
panel1.add(label3);
panel1.add(button3);
panel1.add(label4);
panel1.add(button4);
panel2.setLayout(new BorderLayout());
panel2.add(button5,BorderLayout.NORTH);
panel2.add(text,BorderLayout.SOUTH);
this.add(panel1,BorderLayout.CENTER);
this.add(panel2,BorderLayout.SOUTH);
setBounds(100,100,350,250);
setVisible(true);
validate();
}
public void actionPerformed(ActionEvent e)
{ if(e.getSource()==button1)
{ text.append("一个面纸、");
sum=sum+3;
}
else if(e.getSource()==button2)
{ text.append("一只钢笔、");
sum=sum+5;
}
else if(e.getSource()==button3)
{ text.append("一本书、");
sum=sum+10;
}
else if(e.getSource()==button4)
{ text.append("一双袜子、");
sum=sum+8;
}
else if(e.getSource()==button5)
{
text.append("\n"+"总价为:"+"\n"+sum);
}
}
}
public class Shopping {
public static void main(String[] args) {
new ShopFrame("购物车");
}
}
我没用Swing可能显示不出来你的效果。不满意得话我在给你编一个。
这个好写，People类中有几个属性，姓名，年龄，等 还有比如说人所使用的交通工具，那就得依赖Car类，继承其全部的属性和方法，人也得有住处的吧，那就有House类，继承House类的全部属性和方法，如果有人想问一个人你开的什么样的车，车的配置是什么的，这样就一目了然了，还有住房也是同样的道理，写三个类，然后在Person类中extends House,Car
