求帮忙写个类啊

2012-02-20 10:44:33 391 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

设计一个形状类(接口)Shape,方法:求周长和求面积形状类(接口)的子类(实现类): 设计一个形状类(接口)Shape,方法:求周长和求面积形状类(接口)的子类(实现类): 阅读详情

创建3个类，其中Account类用来模拟银行账户，每个银行账户包括属性：账户号、余额、年利率、开户时间，并有取款（withdraw）和存款（deposit）方法。在此基础上，创建2个子类，分别为支票账户（checking account）和储蓄账户（saving account）。支票账户有一定的透支额，储蓄账户不能透支。实现这几个类，并书写一个测试程序，创建Account, SavingsAccount, 和 CheckingAccount对象，并调用它们的toString（）方法。

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切换为时间正序

snowboy8886 2012-02-20

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银行里的数据一般用的是BigDecimal类型

安特矮油 2012-02-20

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package t;



import java.util.Date;



public class Test {



	public static void main(String[] args) {

		Account a1 = new CheckingAccount(1000.00);

		a1.setBalance(1000.00);

		a1.setCardNo("000001");

		a1.setCreateDate(new Date());

		a1.setInterestRate(0.03);

		a1.deposit(1000.00);

		a1.withdraw(4000);

		

		Account a2 = new SavingAccount();

		a2.setBalance(1000.00);

		a2.setCardNo("000002");

		a2.setCreateDate(new Date());

		a2.setInterestRate(0.03);

		a2.deposit(1000.00);

		a2.withdraw(4000);

		

	}

}

安特矮油 2012-02-20

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package t;



public class SavingAccount extends Account{



	@Override

	public void deposit(double money) {

		setBalance(getBalance() + money);

	}



	@Override

	public double withdraw(double money) {

		double balance = getBalance();

		if(money > balance){

			System.out.println("余额不足！");

			return 0;

		}

		setBalance(balance - money);

		return money;

	}



}

安特矮油 2012-02-20

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package t;



public class CheckingAccount extends Account{



	public CheckingAccount(double overdraft){

		setOverdraft(overdraft);

	}

	

	private double overdraft;

	

	public double getOverdraft() {

		return overdraft;

	}



	public void setOverdraft(double overdraft) {

		this.overdraft = overdraft;

	}



	@Override

	public void deposit(double money) {

		setBalance(getBalance() + money);

	}



	@Override

	public double withdraw(double money) {

		double balance = getBalance();

		if(money > balance + overdraft){

			System.out.println("余额不足！");

			return 0;

		}

		setBalance(balance - money);

		return money;

	}



}

安心逍遥 2012-02-20

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呵呵，有人写好了

安特矮油 2012-02-20

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package t;



import java.util.Date;



public abstract class Account {



	private String cardNo;

	private double balance;

	private double interestRate;

	private Date createDate;

	public String getCardNo() {

		return cardNo;

	}

	public void setCardNo(String cardNo) {

		this.cardNo = cardNo;

	}

	public double getBalance() {

		return balance;

	}

	public void setBalance(double balance) {

		this.balance = balance;

	}

	public double getInterestRate() {

		return interestRate;

	}

	public void setInterestRate(double interestRate) {

		this.interestRate = interestRate;

	}

	public Date getCreateDate() {

		return createDate;

	}

	public void setCreateDate(Date createDate) {

		this.createDate = createDate;

	}

	

	public abstract double withdraw(double money);

	public abstract void deposit(double money);

	

	@Override

	public int hashCode() {

		final int prime = 31;

		int result = 1;

		long temp;

		temp = Double.doubleToLongBits(balance);

		result = prime * result + (int) (temp ^ (temp >>> 32));

		result = prime * result + ((cardNo == null) ? 0 : cardNo.hashCode());

		result = prime * result

				+ ((createDate == null) ? 0 : createDate.hashCode());

		temp = Double.doubleToLongBits(interestRate);

		result = prime * result + (int) (temp ^ (temp >>> 32));

		return result;

	}

	@Override

	public boolean equals(Object obj) {

		if (this == obj)

			return true;

		if (obj == null)

			return false;

		if (getClass() != obj.getClass())

			return false;

		final Account other = (Account) obj;

		if (Double.doubleToLongBits(balance) != Double

				.doubleToLongBits(other.balance))

			return false;

		if (cardNo == null) {

			if (other.cardNo != null)

				return false;

		} else if (!cardNo.equals(other.cardNo))

			return false;

		if (createDate == null) {

			if (other.createDate != null)

				return false;

		} else if (!createDate.equals(other.createDate))

			return false;

		if (Double.doubleToLongBits(interestRate) != Double

				.doubleToLongBits(other.interestRate))

			return false;

		return true;

	}

	@Override

	public String toString() {

		return super.toString();

	}

}

CN_Anyoo 2012-02-20

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lx继续

小V小V志 2012-02-20

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好了。。。发不上去

求帮忙写个类啊

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