java中结账代码 java家庭记账代码
(OOP)求一个结账的Java代码啊,要求客户可以从菜单里面选择物品,最后结账在控制台。
public class Test {
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public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
String str = "";
while(true) {
System.out.println("请输入一个字符:");
str = sc.nextLine();
if(str=="exit") // 如果字符串为"exit",退出循环
break;
if(str.length()==1) {
char c = str.charAt(0);
System.out.println("它对应的ASCII码为:" + (int)c); //(int)c将c强制转换为它的ascii码
}
else
System.out.println("请输入一位字符。");
}
sc.close();
}
}
Java程序编写--网吧结账时的计费界面
import java.awt.BorderLayout;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.WindowConstants;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;
import javax.swing.SwingUtilities;
public class TestFrame extends javax.swing.JFrame {
private JScrollPane jScrollPane1;
private JTable jTable1;
/**
* Auto-generated main method to display this JFrame
*/
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
TestFrame inst = new TestFrame();
inst.setLocationRelativeTo(null);
inst.setVisible(true);
}
});
}
public TestFrame() {
super();
initGUI();
}
private void initGUI() {
try {
setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
{
jScrollPane1 = new JScrollPane();
getContentPane().add(jScrollPane1, BorderLayout.CENTER);
{
TableModel jTable1Model =
new DefaultTableModel(
new String[][] { {"","",""},{} ,{} ,{} },
new String[] { "上网总时间", "上网花费金额" ,"上网单价"});
jTable1 = new JTable();
jScrollPane1.setViewportView(jTable1);
jTable1.setModel(jTable1Model);
}
}
pack();
setSize(400, 300);
} catch (Exception e) {
e.printStackTrace();
}
}
}
用Java写一个简单的程序 使用for和while的嵌套循环语句,写一个模拟结账
import java.util.Scanner;
public class JieZhang {
public static void main(String[] args) {
System.out.println("请输入要结账的顾客数:");
Scanner s = new Scanner(System.in);
int num = s.nextInt();
for(int i=0;inum;i++){
int flag = 1;
double sum = 0;//总价
while(flag==1){
flag = 1;
System.out.println("请输入单价:");
double price = s.nextDouble();
System.out.println("请输入数量:");
int number = s.nextInt();
sum = sum + price * number;
System.out.println("请选择是否继续计算:1继续");
flag = s.nextInt();
}
System.out.println("第"+(i+1)+"位顾客消费:"+sum);
}
}
}
JAVA用面向对象表示小明去超市买到的东西都放在购物车中最后一起结账
先定义商品接口,然后声明购物车这个类用来保存商品,定义怎样增加商品,定义implements是一个类实现一个商品接口用的关键字,最后定义所购买的商品,然后输出,最后统计结账。
当然用链表也可以实现
Java购物结算,卡在不懂do...while跳出循环和最后的总金额。求解决,谢谢
刚帮你调测了一下,当你输入"n"的时候,已经跳出循环了,只不过你没有输出提示,以为没出来,
又输入字符了所有报错了,应该是输入金额的,我帮你加了下输出你可以看下结果;
public static void main(String args[]){
System.out.println("********************");
System.out.println("");
System.out.println("请选择购买商品编号:");
System.out.println("1.T恤(¥245.0) 网球鞋(¥570.0) 网球拍(¥500.0)");
System.out.println("********************");
System.out.println("");
double s=0;
String d;
do{
System.out.println("请输入商品编号:");
Scanner input=new Scanner(System.in);
int a=input.nextInt();
if(a==1){
System.out.println("请输入购买数量:");
int b=input.nextInt();
double c=245*b;
System.out.println("T恤¥245.0 数量:"+b+" "+"合计:"+c);
s=s+c;
}
else if(a==2){
System.out.println("请输入购买数量:");
int b=input.nextInt();
double c=570*b;
System.out.println("网球鞋¥245.0 数量:"+b+" "+"合计:"+c);
s=s+c;
}
else if(a==3){
System.out.println("请输入购买数量:");
int b=input.nextInt();
double c=500*b;
System.out.println("网球拍¥245.0 数量:"+b+" "+"合计:"+c);
s=s+c;
}
else {System.out.println("无此商品");}
System.out.println("否继续(y/n)");
d=input.next();
}while(d.equals("y"));
System.out.println("===========付款===========");
System.out.println("=====输入金额=====");
Scanner input=new Scanner(System.in);
int x=input.nextInt();
double m=s*0.8;
System.out.println("折扣:0.8");
System.out.println("应付金额:"+m);
System.out.println("实际金额:"+x);
double p=x-m;
System.out.println("找钱:"+p);
}
java新手求大神解答。主要求代码,有思路但是写不出啊。
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Scanner;
enum Huo {
TX(1, "T恤", 245), WQX(2, "网球鞋", 570), WQP(3, "网球拍", 320);
private int id;
private String name;
private double price;
private Huo(int id, String name, double price) {
this.id = id;
this.name = name;
this.price = price;
}
public int getId() {
return id;
}
public String getName() {
return name;
}
public double getPrice() {
return price;
}
public static Huo getById(int id) {
for (Huo item : Huo.values()) {
if (item.id == id) {
return item;
}
}
return null;
}
}
public class Test {
private static MapInteger, Integer countMap = new HashMapInteger, Integer();
private static double sum = 0;
public static void main(String args[]) {
Scanner in = new Scanner(System.in);
while (true) {
System.out.println("**********************************************");
System.out.println("请选择购买的商品编号:");
for (Huo item : Huo.values()) {
System.out.print(item.getId() + ":" + item.getName() + " ");
}
System.out.println();
System.out.println("**********************************************");
System.out.print("输入购买商品编号:");
int id = in.nextInt();
System.out.print("输入购买商品数量:");
int count = in.nextInt();
Integer tmp = countMap.get(id);
if (tmp == null) {
tmp = 0;
}
countMap.put(id, tmp + count);
show();
while (true) {
System.out.print("是否继续(y/n):");
String jixu = in.next();
if ("Y".equalsIgnoreCase(jixu)) {
break;
} else if ("N".equalsIgnoreCase(jixu)) {
System.out.print("请支付:");
double zhifu = in.nextDouble();
System.out.println("应付金额:" + sum);
System.out.println("客户支付:" + zhifu);
System.out.println("找钱:" + (zhifu - sum));
System.exit(0);
} else {
System.out.print("输入错误");
}
}
}
}
private static void show() {
IteratorInteger it = countMap.keySet().iterator();
while (it.hasNext()) {
Integer key = it.next();
Integer count = countMap.get(key);
Huo huo = Huo.getById(key);
double heji = huo.getPrice() * count;
System.out.println(huo.getName() + "¥" + huo.getPrice() + " 数量:" + count + " 合计:" + heji);
sum += heji;
}
}
}
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