은행 입금, 출금, 송금

import java.util.Random;

public class BankAccount {

 Random rd = new Random();

private String name, accountNo;

private int balance;

private double interest;

 

public void setName(String n) { name = n;}

public void setAccountNo(String a) {accountNo = a;}

public void setBalance(int b) {balance = b;}

public void setRate(double r) {interest = r;}

 

public String getName() {return name;}

public String getAccountNo() {return accountNo;}

public int balance() {return balance;}

public double rate() {return interest;}

 

public String toString() {

String bank;

bank = accountNo +" :: " + name + " :: " + balance + "원 :: " + interest + "%";

return bank;

 }

 

private int calcInterest() {

double interate;

interate = interest * (double)balance / 100;

return (int)interate;

 }

 

private String makeID() {

return (rd.nextInt(9000) + 1000) + "-" + (rd.nextInt(9000) + 1000);

 }

 

public BankAccount() {

this("모름", 0);

 }

 

public BankAccount(String name, int balance) {

this(name, balance, 0);

 }

 

public BankAccount(String name, int balance, double interest) {

this.name = name;

this.balance = balance;

this.interest = interest;

this.accountNo = makeID();

}

 

public boolean deposit(int money) {

if (money < 0) {

return false;

}

 

this.balance += money;

 

return true;

 }

 

public boolean withdraw(int money) {

if (money > this.balance) {

return false;

}

 

this.balance -= money;

 

return true;

 }

 

public static boolean transfer(BankAccount from, BankAccount to, int money) {

if (money > from.balance) {

return false;

 }

 

from.balance -= money;

to.balance += money;

 

return true;

 }

}

 

 

import java.util.Scanner;

public class Practice_58 {

 

public static void main(String[] args) {

Scanner input = new Scanner(System.in);

 

BankAccount b0 = new BankAccount("김동덕", 100, 3.1);

BankAccount b1 = new BankAccount("홍길동", 2000, 2.15);

BankAccount b2 = new BankAccount("성춘향", 500, 2.05);

 

System.out.println("은행 계좌 모두의 정보입니다.");

System.out.println(b0.toString());

System.out.println(b1.toString());

System.out.println(b2.toString() + "\n");

 

System.out.print("계좌 " + b0.getAccountNo() + "에 입금할 금액을 입력하세요: ");

 

if(b0.deposit(input.nextInt())) {

  System.out.println("입금이 성공했습니다.\n");

} else {

  System.out.println("입금이 실패했습니다.\n");

}

 

System.out.println("은행 계좌 모두의 정보입니다.");

System.out.println(b0.toString());

System.out.println(b1.toString());

System.out.println(b2.toString() + "\n");

 

System.out.print("계좌 " + b1.getAccountNo() + "에 출금할 금액을 입력하세요: ");

 

if(b1.withdraw(input.nextInt())) {

  System.out.println("출금이 성공했습니다.\n");

} else {

  System.out.println("출금이 실패했습니다.\n");

}

 

System.out.println("은행 계좌 모두의 정보입니다.");

System.out.println(b0.toString());

System.out.println(b1.toString());

System.out.println(b2.toString() + "\n");

 

System.out.print("계좌 " + b1.getAccountNo() + "에서 계좌 " + b2.getAccountNo() + "으로 송금할 금액을 입력하세요: ");

 

if(BankAccount.transfer(b1, b2, input.nextInt())) {

System.out.println("송금이 성공했습니다.\n");

} else {

System.out.println("송금이 실패했습니다.\n");

}

 

System.out.println("은행 계좌 모두의 정보입니다.");

System.out.println(b0.toString());

System.out.println(b1.toString());

System.out.println(b2.toString() + "\n");

 

input.close();

}

}

 

 

결과: