信用类账户和储蓄类账户相互转账
方法transfer(Account a,double money)
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关注 public abstract class AbstractAccount{ }
package Student; import java.util.Date; public class Account extends AbstractAccount{ private String id; private String name; private double balance; private Date dateCreated = new Date(); public Account(String id, String name) { this.id = id; this.name = name; } // 构造对应的set和get方法 public String getId() { return id; } public void setId(String id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public double getBalance() { return balance; } public void setBalance(double balance) { this.balance = balance; } public Date getDateCreated() { return dateCreated; } public void setDateCreated(Date dateCreated) { this.dateCreated = dateCreated; } void withdraw(double Moneywithdraw) {//构造取款方法 if (balance - Moneywithdraw < 0) {//判断 System.out.println("余额不足,不可以取款"); } else { balance = balance - Moneywithdraw; System.out.println("账户余额:" + balance); } } void deposit(double Moneydeposit) {//构造存款方法 balance = balance + Moneydeposit; System.out.println("账户余额:" + balance); } void transfer(Account a, double money) {//构造转账方法 if (balance < money) {//判断 System.out.println("余额不足,不可以转账"); } else { balance = balance - money; System.out.println("账户余额:" + balance); } } public String toString() { return ("账号:" + id + "\t实名:" + name + "\t账户余额" + balance + "\t开户时间:" + dateCreated); } }
测试类
package Student; public class TestAccount { public static void main(String[] args) { Account p1 = new Account("200405216", "蜡笔小新");// 创建账户对象 p1.deposit(3000); System.out.println(p1.toString()); p1.withdraw(2500); System.out.println(p1.toString());// 创建另一个账户对象 Account p2 = new Account("200205218", "胡图图"); p1.transfer(p2, 100); System.out.println(p1.toString()); System.out.println(p2.toString()); // 测试取钱和转账时余额不足的情况 p1.withdraw(2500); p1.transfer(p2, 100); System.out.println(p1.toString()); System.out.println(p2.toString()); } }
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