[자바 요약정리] 접근제어자를 이용한 은행 프로그램
- 카테고리 없음
- 2017. 8. 24. 16:31
public class Main {
public static void main(String[] args) {
Person p1 = new Person();
p1.setName("김신의");
p1.setAge(28);
p1.setCashAmount(30000);
Person p2 = new Person();
p2.setName("마이클");
p2.setAge(70);
p2.setCashAmount(100000);
// 은행 계좌 생성
BankAccount a1 = new BankAccount();
a1.setBalance(10000);
BankAccount a2 = new BankAccount();
a2.setBalance(500000);
p1.account = a1;
a1.owner = p1;
p2.account = a2;
a2.owner = p2;
// 3 - 4. write code here
p2.account.deposit(30000);
p2.account.withdraw(170000);
p2.account.deposit(620000);
p2.account.withdraw(890000);
}
}
public class Person {
private String name;
private int age;
private int cashAmount;
BankAccount account;
public void setName(String newName) {
name = newName;
}
public void setAge(int newAge) {
age = newAge;
}
public void setCashAmount(int newCashAmount) {
cashAmount = newCashAmount;
}
public String getName() {
return name;
}
public int getAge() {
return age;
}
public int getCashAmount() {
return cashAmount;
}
}
public class BankAccount {
private int balance;
Person owner;
public void setBalance(int newBalance){
balance = newBalance;
}
public int getBalance(){
return balance;
}
// 파라미터 : 입금할 액수(정수)
// 리턴 : 성공여부(불린)
boolean deposit(int amount) {
// 1. write code here
boolean result = true;
balance=balance+amount;
owner.setCashAmount(owner.getCashAmount()-amount);
if(balance>=0 && owner.getCashAmount()>=0){
System.out.printf("%d원 입금하였습니다. 잔고: %d원, 현금: %d원\n", amount,balance,owner.getCashAmount());
System.out.println(result);
return result;
}
else
{
result = false;
balance=balance-amount;
owner.setCashAmount(owner.getCashAmount()+amount);
System.out.printf("입금 실패입니다. 잔고: %d원, 현금: %d원\n", balance, owner.getCashAmount());
System.out.println(result);
return result;
}
}
// 파라미터 : 출금할 액수(정수)
// 리턴 : 성공여부(불린)
boolean withdraw(int amount) {
// 2. write code here
boolean result = true;
balance=balance-amount;
owner.setCashAmount(owner.getCashAmount()+amount);
if(balance>=0 && owner.getCashAmount()>=0){
System.out.printf("%d원 출금하였습니다. 잔고: %d원, 현금: %d원\n", amount,balance,owner.getCashAmount());
System.out.println(result);
return result;
}
else
{
result = false;
balance=balance+amount;
owner.setCashAmount(owner.getCashAmount()-amount);
System.out.printf("출금 실패입니다. 잔고: %d원, 현금: %d원\n", balance, owner.getCashAmount());
System.out.println(result);
return result;
}
}
}
