String account
int account_num
//构造函数
public BankAccount(String account,int account_num){
this.account=account
this.account_num=account_num
}
//存钱
public String addNum(int num){
account_num= account_num+num
return "存钱成功"
}
//取钱
public String getNum(int num){
String result
if(account_num>num){
account_num =account_num-num
result="取钱成功"
}else{
result="账户余额不足，还剩"+account_num
}
return result
}
//显示余额
public String displayNum(){
return "账户余额："+account_num
}
//显示账号
public String displayAccount(){
return "账户："+account
}
public static void main(String[] args){
BankAccount lucy = new BankAccount("lucy",100)
BankAccount jack = new BankAccount("jack",50)
//显示他们各自的余额
System.out.println("===显示他们各自的余额===")
System.out.println("lucy:"+lucy.displayNum())
System.out.println("jack:"+jack.displayNum())
//存钱取钱
System.out.println("===存钱取钱===")
System.out.println("lucy取50:"+lucy.getNum(50))
System.out.println("jack存200:"+jack.addNum(200))
//显示账户 显示余额
System.out.println("===存钱取钱===")
System.out.println(lucy.displayAccount()+""+lucy.displayNum())
System.out.println(jack.displayAccount()+""+jack.displayNum())
}
}
运行结果：
===显示他们各自的余额===
lucy:账户余额：100
jack:账户余额：50
===存钱取钱===
lucy取50:取钱成功
jack存200:存钱成功
===存钱取钱===
账户：lucy账户余额：50
账户：jack账户余额：250
import java.util.Scannerpublic class bank{int number,id int year,month,day float money String name void set(int y,int m,int d)
{ year=y month=m day=d } public String toString()
{ return year+"年"+month+"月"+day+"日" } public float money1(int n)
{ money=money+n return money } public float money2(int x)
{ if(money<x) return 0 money=money-x return money } public static void main(String args[])
{ bank b=new bank() b.set(2009,8,6) b.money=0b.number=1 b.id=20102 b.name="张三"System.out.println("用户名："+b.name)
System.out.println("身份证号："+b.id) System.out.println("开户日期是："+b.toString()) System.out.print("请输入存入的数额：") Scanner sc = new Scanner(System.in) int i = sc.nextInt() b.money1(i) System.out.print("账户余额："+b.money) System.out.println() System.out.print("请输入取款余额：") Scanner cc = new Scanner(System.in) int j = cc.nextInt() b.money2(j) System.out.print("账户余额："+b.money) } }
