JAVA课堂作业（七）

public class ParentChildTest {
    public static void main(String[] args) {
        Parent parent=new Parent();
        parent.printValue();
        Child child=new Child();
        child.printValue();
        
        parent=child;
        parent.printValue();
        
        parent.myValue++;
        parent.printValue();
        
        ((Child)parent).myValue++;
        parent.printValue();
        
    }
}

class Parent{
    public int myValue=100;
    public void printValue() {
        System.out.println("Parent.printValue(),myValue="+myValue);
    }
}
class Child extends Parent{
    public int myValue=200;
    public void printValue() {
        System.out.println("Child.printValue(),myValue="+myValue);
    }
}

import java.util.Vector;
public class zoo4 {
    public static void main(String[] args) {
         Feeder f = new Feeder("小李");
         Vector<Animal> ans = new Vector<Animal>();
         ans.add(new Lion());
         for (int i = 0; i < 10; i++) {
             ans.add(new Monkey());
         }
         for (int i = 0; i < 5; i++) { 
             ans.add(new Pigeon());
         }
                
         f.feedAnimals(ans);
   }
}

class Feeder {
    public String name;
    Feeder(String name) {
        this.name = name;
    }
    public void feedAnimals(Vector<Animal> ans) {
        for (Animal an : ans) {
            an.eat();
            }
        }
}

interface Animal {
    public abstract void eat();
        }

class Lion implements Animal {
    public void eat() {
        System.out.println("狮子。");
            }
}

class Monkey implements Animal {
    public void eat() {
        System.out.println("猴子。");
            }
}

class Pigeon implements Animal {
    public void eat() {
        System.out.println("鸽子。");
        }
}

import java.util.*;
public class Ex1115 {

    public static void main(String[] args) {
        Account a = new Account("11111111111","dsdf","20161115","256398",23.6);
        a.jiemian();
    }
}

class Account
{
    private static final String JOptionPane = null;
    private  static String Id;
    private static String name;
    private static String date;
    private static String mima;
    private static double extra;
    
    Account(String i,String n,String d,String m,double e)//构造函数
    {
        Id=i;
        name=n;
        date=d;
        mima=m;
        extra=e;
    }
    
    public void set_Id(String i){
        Id=i;
    }
    public void set_name(String n){
        name=n;;
    }
    public void set_date(String d){
        date=d;
    }
    public void set_mima(String m){
        mima=m;
    }
    public void set_extra(double e){
        extra=e;
    }
    
    public String get_Id(){
        return Id;
    }
    public String get_name(){
        return name;
    }
    public String get_date(){
        return date;
    }
    public String get_mima(){
        return mima;
    }
    public double get_extra(){
        return extra;
    }
    
    
    public static void jiemian()//界面
    {
        System.out.println("请选择界面(1.中文2.英文)：");
        Scanner sc=new Scanner(System.in);
        String num1=sc.nextLine();
        int num11=Integer.parseInt(num1);
        
        if(num11==1){
            
            Scanner sc1=new Scanner(System.in);
            int num=Integer.parseInt(sc1.nextLine());

            while(true)
            {
                    System.out.println("请选择要进行的操作：");
                    System.out.println("1.取款");
                    System.out.println("2.存款");
                    System.out.println("3.转账");
                    System.out.println("4.修改密码");
                    System.out.println("5.查询余额");
                    System.out.println("6.退卡");
                    
                if(num==1)
                    qukuan();
                else if(num==2)
                    cunkuan();
                else if(num==3)
                    zhuan();
                else if(num==4)
                    xiugai();
                else if(num==5)
                    chaxun();
                else if(num==6){
                    System.out.println("退卡成功！");
                }
            }
        }
        
        else{
            
        }
    
    }
    
    public static void cunkuan()//存款
    {
        System.out.println("请输入存款金额：");
        Scanner sc = new Scanner(System.in);
        int jine = Integer.parseInt(sc.nextLine());
        
        extra += jine;
        System.out.println("您现在的金额为：" + extra);
    }
    
    public static void qukuan()//取款
    {
        System.out.println("请输入取款金额");
        String output="";
        output += "100  "
                + "\n500 "
                + "\n1000  "
                + "\n1500 "
                + "\n2000 "
                + "\n5000  "
                + "\n其他金额（请输入0）"
                + "\n返回操作（请输入-1） "
                + "\n退卡（请输入-2）";
        System.out.println(output);

        Scanner sc=new Scanner(System.in);
        int num=Integer.parseInt(sc.nextLine());
        
        switch(num)
        {
        case 100:{
            
        }
            extra -= 100;break;
        case 500:
            extra -= 500;break;
        case 1000:
            extra -= 1000;break;
        case 1500:
            extra -= 1500;break;
        case 2000:
            extra -= 2000;break;
        case 5000:
            extra -= 5000;break;
        case 0:
        {
            System.out.println("请输入取款金额：");
            Scanner sc1=new Scanner(System.in);
            int jine=Integer.parseInt(sc1.nextLine());
            extra -= jine;
            sc1.close();
            break;
        }
        case -1:
            System.out.println("已返回操作界面");break;
        case -2:
            System.out.println("退卡成功！");break;
        }
    }
    
    public static void zhuan()//转账汇款
    {
        System.out.println("请输入转账行号:");
        Scanner sc = new Scanner(System.in);
        String hanghao = sc.nextLine();
        
        Scanner sc1 = new Scanner(System.in);
        int jine = Integer.parseInt(sc1.nextLine());
        
        extra -= jine;
        
        System.out.println("转账成功！");
    }
    
    public static void xiugai()//修改密码
    {
        System.out.println("请输入要修改的密码：");
        Scanner sc1 = new Scanner(System.in);
        String mi = sc1.nextLine();
        mima = mi;
    }
    
    public static void chaxun()//查询余额
    {
        System.out.println("余额为："+extra);
    }
    
}