源代码：
import java.util.Scanner;
interface fangfa{
public void show();
public void qukuan();
public void cunkuan();
public void zhuanzhang();
public void setAcount(String string, String string2, String string3, String string4, double i);
public String getMima();
}
class atm implements fangfa{
String kahao; //私有变量
String name;
String riqi;
double yue;
String mima;
public atm(){ //无参构造函数
}
public atm(String kahao,String name,String riqi,String mima,double yue){ //有参构造函数
this.kahao=kahao;
this.name=name;
this.riqi=riqi;
this.mima=mima;
this.yue=yue;
}
public void setAcount(String kahao,String name,String riqi,String mima,double yue){ //赋值
this.kahao=kahao;
this.name=name;
this.riqi=riqi;
this.mima=mima;
this.yue=yue;
}
public String getkahao(){ return kahao;}//获得值
public String getName(){return name;}
public String getRiqi(){return riqi;}
public String getMima(){return mima;}
public double getYue(){return yue;}
public void show()
{
System.out.println("余额为："+yue);
}
public void cunkuan(){
System.out.println("请输入存款金额:");
Scanner s=new Scanner(System.in);
yue+=s.nextDouble();
show();
}
public void zhuanzhang()
{
atm q=new atm();
Scanner s=new Scanner(System.in);
System.out.println("请输入对方卡号:");
q.kahao=s.nextLine();
System.out.println("请输入转账金额:");
double zhuan=s.nextDouble();
yue=yue-zhuan;
q.yue=q.yue+zhuan;
show();
}
public void qukuan(){
boolean f=true;
while(f){
System.out.println("1、100元");
System.out.println("2、500元");
System.out.println("3、1000元");
System.out.println("4、1500元");
System.out.println("5、2000元");
System.out.println("6、5000元");
System.out.println("7、其他金额");
System.out.println("8、退卡");
System.out.println("9、返回");
System.out.println("请选择");
Scanner s=new Scanner(System.in);
int ch=s.nextInt();
switch(ch){
case 1:
yue=yue-100;
show();
break;
case 2:
yue=yue-500;
show();
break;
case 3:
yue=yue-1000;
show();
break;
case 4:
yue=yue-1500;
show();
break;
case 5:
yue=yue-2000;
show();
break;
case 6:
yue=yue-5000;
show();
break;
case 7:
System.out.println("请输入取款金额：");
double qu=s.nextDouble();
yue=yue-qu;
show();
break;
case 8:
f=false;
break;
case 9:
f=false;
break;
}
}
}
}
public class ABC {
public static void main(String[] args) {
// TODO Auto-generated method stub
fangfa a=new atm();
a.setAcount("111111111111", "nasdf", "199508030048", "123456", 20000);
System.out.println("请输入密码：");
Scanner aa=new Scanner(System.in);
String ba=aa.nextLine();
if(ba.equals(a.getMima()))
while(true){
System.out.println("1、取款");
System.out.println("2、存款");
System.out.println("3、转账");
System.out.println("4、查询");
System.out.println("请选择：");
Scanner s=new Scanner(System.in);
int b=s.nextInt();
switch(b){
case 1:
a.qukuan();
break;
case 2:
a.cunkuan();
break;
case 3:
a.zhuanzhang();
break;
case 4:
a.show();
}
}
}
}
实验截图：
