手擼一個外賣點餐系統後臺，可以寫上簡歷的實戰專案！
阿新 • • 發佈：2020-11-30
## 外賣點餐系統的實現
## 實體類的編寫
(1)菜品類(菜品id，菜品名，菜品型別，上架時間，單價，月銷售，總數量)
```
import java.util.Date;
public class Menu {
private String mid;
private String name;
private String type;
private Date dateIssued;
private double price;
private int monthlySales;
private int totalQuantity;
public Menu() {
super();
// TODO Auto-generated constructor stub
}
public Menu(String mid, String name, String type, Date dateIssued, double price, int monthlySales, int totalQuantity) {
super();
this.mid = mid;
this.name = name;
this.type = type;
this.dateIssued = dateIssued;
this.price = price;
this.monthlySales = monthlySales;
this.totalQuantity = totalQuantity;
}
public String getMid() {
return mid;
}
public void setMid(String mid) {
this.mid = mid;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public Date getDateIssued() {
return dateIssued;
}
public void setDateIssued(Date dateIssued) {
this.dateIssued = dateIssued;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
public int getMonthlySales() {
return monthlySales;
}
public void setMonthlySales(int monthlySales) {
this.monthlySales = monthlySales;
}
public int getTotalQuantity() {
return totalQuantity;
}
public void setTotalQuantity(int totalQuantity) {
this.totalQuantity = totalQuantity;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((dateIssued == null) ? 0 : dateIssued.hashCode());
result = prime * result + ((mid == null) ? 0 : mid.hashCode());
result = prime * result + monthlySales;
result = prime * result + ((name == null) ? 0 : name.hashCode());
long temp;
temp = Double.doubleToLongBits(price);
result = prime * result + (int) (temp ^ (temp >>> 32));
result = prime * result + totalQuantity;
result = prime * result + ((type == null) ? 0 : type.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Menu other = (Menu) obj;
if (dateIssued == null) {
if (other.dateIssued != null)
return false;
} else if (!dateIssued.equals(other.dateIssued))
return false;
if (mid == null) {
if (other.mid != null)
return false;
} else if (!mid.equals(other.mid))
return false;
if (monthlySales != other.monthlySales)
return false;
if (name == null) {
if (other.name != null)
return false;
} else if (!name.equals(other.name))
return false;
if (Double.doubleToLongBits(price) != Double.doubleToLongBits(other.price))
return false;
if (totalQuantity != other.totalQuantity)
return false;
if (type == null) {
if (other.type != null)
return false;
} else if (!type.equals(other.type))
return false;
return true;
}
@Override
public String toString() {
return "Menu [mid=" + mid + ", name=" + name + ", type=" + type + ", dateIssued=" + dateIssued + ", price="
+ price + ", monthlySales=" + monthlySales + ", totalQuantity=" + totalQuantity + "]";
}
}
```
```
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Scanner;
import java.util.Set;
import java.util.stream.Collectors;
public class MenuManager implements DAO