• 吃货联盟系统简单实现（对象+数组）

     

    package KindMethod1;

    //              菜单

    public class Food {
        private String food;        //餐品信息
        private double price;        //价格
        private int like;            //点赞数
        
        public Food() {
            super();
        }
        public Food(String food, double price,int like) {
            super();
            this.food = food;
            this.price = price;
            this.like=like;
        }
        public String getFood() {
            return food;
        }
        public void setFood(String food) {
            this.food = food;
        }
        public double getPrice() {
            return price;
        }
        public void setPrice(double price) {
            this.price = price;
        }
        public int getLike() {
            return like;
        }
        public void setLike(int like) {
            this.like = like;
        }
    }

    1. package KindMethod1;
    2.  
    3. //        步骤具体实现
    4. public class Method{
    5. 	private NewMessage[] newmessage;		//个人信息数组
    6. 	Food[] food;					//菜单数组
    7. 	int num=0;
    8. 	int num1=0;
    9. 	
    10. //	初始化信息数组长度
    11. 	public Method(int num){
    12. 		newmessage=new NewMessage[num];
    13. 		food = new Food[num];
    14. 	}
    15. 	
    16. 	public void addArray(Food foods){
    17. 			food[num1++]=foods;
    18. 	}
    19. 	
    20. //	添加信息，添加成功显示true,否则显示false
    21. 	public boolean addArray(NewMessage newmessag){
    22. 		if(num>newmessage.length){
    23. 			return false;
    24. 		}else{
    25. 			newmessage[num++]=newmessag;
    26. 			return true;
    27. 		}
    28. 	}
    29. //	显示所有的信息
    30. 	public NewMessage[] showAll(){
    31. 		NewMessage[] newmess = new NewMessage[num];
    32. 		for(int i = 0;i
    33. 			newmess[i]=newmessage[i];
    34. 		}
    35. 		return newmess;
    36. 	}
    37. //	显示菜单信息
    38. 	public Food[] show(){
    39. 		Food[] food1 =new Food[num1];
    40. 		for(int i = 0;i
    41. 			food1[i]=food[i];
    42. 		}
    43. 		return food1;
    44. 	}
    45. //	签收订单，成功返回true,否则返回flase
    46. 	public boolean sign(int i){
    47. 		if(i<0||i>num){
    48. 			return false;
    49. 		}else if(newmessage[i].getState()==1){
    50. 			System.out.println("订单已签收，不能再次签收");
    51. 			return false;
    52. 		}
    53. 		else{
    54. 		newmessage[i].setState(1);
    55. 		return true;
    56. 		}
    57. 	}
    58. 	
    59. //	删除订单信息
    60. 	public boolean delete(int x){
    61. 		if(x>num || x<0){
    62. 			return false;
    63. 		}else{
    64. 			for(int i=x;i1;i++){
    65. 				newmessage[i]=newmessage[i+1];
    66. 			}
    67. 			newmessage[--num]=null;
    68. 			return true;
    69. 		}
    70. 	}
    71. //	点赞
    72. 	public boolean like(int number){
    73. 		if(number>num1 || number<0){
    74. 			return false;
    75. 		}else{
    76. 			food[number].setLike(food[number].getLike()+1);
    77. 			return true;
    78. 		}
    79. 	}
    80. 	public int showNum(){
    81. 		return num;
    82. 	}
    83. 	
    84. 	
    85.  
    86. }
    1. package KindMethod1;
    2.  
    3. //个人信息
    4. public class NewMessage {
    5. 	private String name;		//姓名
    6.  
    7. 	private double time;		//送餐时间
    8. 	private String address;		//地址
    9. 	private double amount;		//总金额
    10. 	private int state;			//订单状态
    11. 	private int number;			//点餐份数
    12. 	
    13. 	public NewMessage() {
    14. 		super();
    15. 	}
    16. 	public NewMessage(String name, double time, String address,double amount,
    17. 			int number) {
    18. 		super();
    19. 		this.name = name;
    20. 		this.time = time;
    21. 		this.address = address;
    22. 		this.amount=amount;
    23. 		this.number = number;
    24. 	
    25. 	}
    26. 	public String getName() {
    27. 		return name;
    28. 	}
    29. 	public void setName(String name) {
    30. 		this.name = name;
    31. 	}
    32. 	public double getTime() {
    33. 		return time;
    34. 	}
    35. 	public void setTime(double time) {
    36. 		this.time = time;
    37. 	}
    38. 	public String getAddress() {
    39. 		return address;
    40. 	}
    41. 	public void setAddress(String address) {
    42. 		this.address = address;
    43. 	}
    44. 	public double getAmount() {
    45. 		return amount;
    46. 	}
    47. 	public void setAmount(double amount) {
    48. 		this.amount = amount;
    49. 	}
    50. 	public int getState() {
    51. 		return state;
    52. 	}
    53. 	public void setState(int state) {
    54. 		this.state = state;
    55. 	}
    56. 	public int getNumber() {
    57. 		return number;
    58. 	}
    59. 	public void setNumber(int number) {
    60. 		this.number = number;
    61. 	}
    62.  
    63. 	
    64.  
    65. }
    1. package KindMethod1;
    2. //    界面代码
    3. import java.util.Scanner;
    4.  
    5. public class Test {
    6. 	Scanner sc = new Scanner(System.in);
    7. 	Method method = new Method(10);
    8. 	
    9. 	public Test(){
    10. //		NewMessage newmessage = new NewMessage("李四", 12, "幸福大道45号", 76, 0, 2, 0);
    11. //		method.addArray(newmessage);
    12. 		Food food =new Food("红烧鱼",45,0);
    13. 		method.addArray(food);
    14. 		Food food1 =new Food("红烧肉",38,0);
    15. 		method.addArray(food1);
    16. 		Food food2 =new Food("土豆丝",17,0);
    17. 		method.addArray(food2);
    18. 	}
    19. 	
    20. 	public void menu(){
    21. 		boolean aab=true;
    22. 		do{
    23.             System.out.println("欢迎使用“吃货联盟订餐系统”");
    24.             System.out.println("-----------------------------------------");
    25.             System.out.println("\t\t1、我要订餐");
    26.             System.out.println("\t\t2、查看餐袋");
    27.             System.out.println("\t\t3、签收订单");
    28.             System.out.println("\t\t4、删除订单");
    29.             System.out.println("\t\t5、我要点赞");
    30.             System.out.println("\t\t6、退出系统");
    31.             System.out.println("-----------------------------------------");
    32.             System.out.print("请选择：");
    33.             int choose=sc.nextInt();
    34.             switch (choose) {
    35.             case 1:
    36.                 addNew();
    37.                 break;
    38.             case 2:
    39.                 showMenu();
    40.                 break;
    41.             case 3:
    42.             	sign();
    43.                 break;
    44.             case 4:
    45.             	delete();
    46.                 break;
    47.             case 5:
    48.                 like();
    49.                 break;
    50.             case 6:
    51.             	aab=false;
    52.             	System.out.println("-------------运行结束--------------");
    53.         }
    54. 		}while(aab);
    55. 	}
    56. //	下单
    57. 	public void addNew(){
    58. 		Food[] food =method.show();
    59. 		if(food == null){
    60. 			System.out.println("你还没有点餐");
    61. 			return;
    62. 		}
    63. 		System.out.println("编号"+"\t\t菜名"+"\t\t价格"+"\t\t点赞数");
    64. 		for(int i= 0 ;i
    65. 			System.out.println((i+1)+"\t\t"+food[i].getFood()+"\t\t"+food[i].getPrice()+"\t\t"+food[i].getLike());
    66. 		}
    67. 		System.out.println("---------------请输入你的订餐信息---------------");
    68. 		System.out.print("姓名：");
    69. 		String name = sc.next();
    70. 		System.out.print("送餐时间（上午十点到下午五点）：");
    71. 		double time;
    72. 		boolean bool = true;
    73. 		do{
    74. 		
    75. 		time=sc.nextDouble();
    76. 		if(time>10 && time<17){
    77. 			bool=false;
    78. 			break;
    79. 		}
    80. 		System.out.println("不在配送时间内，重新输入");
    81. 		}while(bool==true);
    82. 		System.out.print("地址：");
    83. 		String address = sc.next();
    84. 		System.out.print("菜单编号：");
    85. 		int num=sc.nextInt();
    86. 		System.out.print("份数：");
    87. 		int number = sc.nextInt();
    88. //		计算总金额
    89. 		double numall = 1;
    90. 		if(food[num-1].getPrice()*number<50){
    91. 			numall=((food[num-1].getPrice()*number)+6);
    92. 		}else{
    93. 			numall=food[num-1].getPrice()*number;
    94. 		}
    95. 		NewMessage newmessage= new NewMessage(name,time,address,numall,number);
    96. 		boolean boole=method.addArray(newmessage);
    97. 		if(boole==true){
    98. 			System.out.println("加入成功");
    99. 			return;
    100. 		}else{
    101. 			System.out.println("加入失败，餐袋已满，请清理餐袋");
    102. 			return;
    103. 		}
    104. 	}
    105. //	查看信息
    106. 	public void showMenu(){
    107. 		System.out.println("---------------------查看餐袋----------------------");
    108. 		NewMessage[] newmessage = method.showAll();
    109. 		if(newmessage==null){
    110. 			System.out.println("餐袋为空！请订餐");
    111. 			return;
    112. 		}else{
    113. 		System.out.println("编号"+"\t姓名"+"\t时间"+"\t地址"+"\t\t总金额"+"\t订单状态"+"\t点餐份数");
    114. 		for (int i = 0; i < newmessage.length; i++) {
    115. 			System.out.println((i+1)+"\t"+newmessage[i].getName()+"\t"+newmessage[i].getTime()+"\t"+newmessage[i].getAddress()+"\t"+
    116. 					newmessage[i].getAmount()+"\t"+newmessage[i].getState()+"\t\t\t"+newmessage[i].getNumber());
    117. 		}
    118. 		return;
    119. 		}
    120. 	}
    121. //	签收订单
    122. 	public void sign(){
    123. 		System.out.println("---------------------签收订单----------------------");
    124. 		System.out.print("请输入要签收订单的编号：");
    125. 		int num = sc.nextInt();
    126. 		boolean bool= method.sign(num-1);
    127. 		if(bool==true){
    128. 			System.out.println("订单签收成功");
    129. 			return;
    130. 		}else{
    131. 			System.out.println("签收失败");
    132. 			return;
    133. 		}
    134. 	}
    135. //	删除订单
    136. 	public void delete(){
    137. 		System.out.println("---------------------删除订单----------------------");
    138. 		System.out.print("请输入要删除订单的编号：");
    139. 		int num=sc.nextInt();
    140. 		boolean bool = method.delete(num-1);
    141. 		if(bool==true){
    142. 			System.out.println("订单删除成功");
    143. 			return;
    144. 		}else{
    145. 			System.out.println("订单删除失败");
    146. 			return;
    147. 		}
    148. 	}
    149. //	订单点赞
    150. 	public void like(){
    151. 		System.out.println("---------------------点赞----------------------");
    152. 		
    153. 		Food[] food =method.show();
    154. 		if(food == null){
    155. 			System.out.println("你还没有点餐");
    156. 			return;
    157. 		}
    158. 		System.out.println("编号"+"\t\t菜名"+"\t\t价格"+"\t\t点赞数");
    159. 		for(int i= 0 ;i
    160. 			System.out.println((i+1)+"\t\t"+food[i].getFood()+"\t\t"+food[i].getPrice()+"\t\t"+food[i].getLike());
    161. 		}
    162. 		System.out.print("请输入要点赞的菜单编号：");
    163. 		int num = sc.nextInt();
    164. 		boolean bool=method.like(num-1);
    165. 		if(bool==true){
    166. 			System.out.println("点赞成功");
    167. 			System.out.println("---------------------点赞----------------------");
    168. 			System.out.println("编号"+"\t\t菜名"+"\t\t价格"+"\t\t点赞数");
    169. 			for(int i= 0 ;i
    170. 				System.out.println((i+1)+"\t\t"+food[i].getFood()+"\t\t"+food[i].getPrice()+"\t\t"+food[i].getLike());
    171. 			}
    172. 			return;
    173. 		}else{
    174. 			System.out.println("点赞失败");
    175. 			System.out.println("---------------------点赞----------------------");
    176. 			System.out.println("编号"+"\t\t菜名"+"\t\t价格"+"\t\t点赞数");
    177. 			for(int i= 0 ;i
    178. 				System.out.println((i+1)+"\t\t"+food[i].getFood()+"\t\t"+food[i].getPrice()+"\t\t"+food[i].getLike());
    179. 			}
    180. 			return;
    181. 		}
    182. 	}
    183. 	
    184. 	
    185. 	public static void main(String[] args) {
    186. 		
    187. 		Test test = new Test();
    188. 		test.menu();
    189. 	}
    190.  
    191. }

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  • 原文地址：https://blog.csdn.net/fool_Java/article/details/126234663