Initial commit

Shopping/.vscode/launch.json

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+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "java",
+            "name": "Current File",
+            "request": "launch",
+            "mainClass": "${file}"
+        },
+        {
+            "type": "java",
+            "name": "Test",
+            "request": "launch",
+            "mainClass": "Test",
+            "projectName": "Shopping"
+        }
+    ]
+}

Shopping/Cashier.java

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+public class Cashier {
+    private String strName;
+    private float fMoney;
+
+    public Cashier(String strName, float fMoney) {
+        this.strName = strName;
+        this.fMoney = fMoney;
+
+    }
+
+    public void cash(Customer cm) {
+        float total = cm.getShopCar().getTotal();
+        cm.pay(total);
+        this.fMoney += total;
+    }
+
+    public void print(Customer cm) {
+        System.out.println("Cashier: " + this.fMoney);
+        System.out.println("Customer: " + cm.getMoney());
+        Good gd;
+        for (int i = 0; i < cm.sc.liCar.size(); i++) {
+            gd = cm.sc.liCar.get(i);
+            System.out.println("name: " + gd.getName() + " price: " + gd.getPrice());
+        }
+    }
+
+    public String getName() {
+        return this.strName;
+    }
+
+    public float getMoney() {
+        return this.fMoney;
+    }
+
+    public void setName(String strName) {
+        this.strName = strName;
+    }
+
+    public void setMoney(float fMoney) {
+        this.fMoney = fMoney;
+    }
+}

Shopping/Customer.java

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+public class Customer {
+    private String strName;
+    private float fMoney;
+    ShopCar sc;
+
+    public Customer(String strName, float fMoney) {
+        this.strName = strName;
+        this.fMoney = fMoney;
+        this.sc = new ShopCar();
+    }
+
+    public void pay(float sun) {
+        this.fMoney -= sun;
+    }
+
+    public void addGood(Good gd) {
+        this.sc.add(gd);
+    }
+
+    public String getName() {
+        return this.strName;
+    }
+
+    public float getMoney() {
+        return this.fMoney;
+    }
+
+    public ShopCar getShopCar() {
+        return this.sc;
+    }
+
+    public void setName(String strName) {
+        this.strName = strName;
+    }
+
+    public void setMoney(float fMoney) {
+        this.fMoney = fMoney;
+    }
+
+    public void setShopCar(ShopCar sc) {
+        this.sc = sc;
+    }
+}

Shopping/Good.java

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+public class Good {
+    private String strName;
+    private float fPrice;
+    private int iCount;
+
+    public Good(String strName, float fPrice, int iCount) {
+        this.strName = strName;
+        this.fPrice = fPrice;
+        this.iCount = iCount;
+    }
+
+    public String getName() {
+        return strName;
+    }
+
+    public float getPrice() {
+        return fPrice;
+    }
+
+    public int getCount() {
+        return iCount;
+    }
+
+    public void setName(String strName) {
+        this.strName = strName;
+    }
+
+    public void setPrice(float fPrice) {
+        this.fPrice = fPrice;
+    }
+
+    public void setCount(int iCount) {
+        this.iCount = iCount;
+    }
+}

Shopping/ShopCar.java

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+import java.util.ArrayList;
+import java.util.List;
+
+public class ShopCar {
+    List<Good> liCar;
+
+    public ShopCar() {
+        this.liCar = new ArrayList<Good>();
+    }
+
+    public void add(Good gd) {
+        this.liCar.add(gd);
+    }
+
+    public boolean del(String inName) {
+        boolean flag = false;
+        Good tempGd;
+        for (int i = 0; i < this.liCar.size(); i++) {
+            tempGd = this.liCar.get(i);
+            if (tempGd.getName().equals(inName)) {
+                this.liCar.remove(i);
+                flag = true;
+                break;
+            }
+        }
+        return flag;
+    }
+
+    public float getTotal() {
+        float total = 0;
+        for (Good gd : this.liCar) {
+            total += gd.getPrice();
+        }
+        return total;
+    }
+}

Shopping/Test.java

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+public class Test {
+    public static void main(String[] args) {
+        Customer cs = new Customer("zhang", 2000);
+        Cashier cash = new Cashier("li", 1000);
+        cs.addGood(new Good("apple", 23.5f, 3));
+        cs.addGood(new Good("book", 67.5f, 2));
+        cs.addGood(new Good("Desk", 200f, 3));
+        cash.cash(cs);
+        cash.print(cs);
+    }
+}