account.java

疯狂Java讲义_源码(含Java设计模式CHM

/**
 * Description:
 * <br/>Copyright (C), 2008-2010, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee [e-mail]
 * @version  1.0
 */
public class Account
{
	//封装账户编号、账户余额两个属性
	private String accountNo;
	private double balance;
	public Account(){}
	//构造器
	public Account(String accountNo , double balance)
	{
		this.accountNo = accountNo;
		this.balance = balance;
	}
	public void setAccountNo(String accountNo)
	{
		this.accountNo = accountNo;
	}
	public String getAccountNo()
	{
		 return this.accountNo;
	}

	public void setBalance(double balance)
	{
		 this.balance = balance;
	}
	public double getBalance()
	{
		 return this.balance;
	}


	//下面两个方法根据accountNo来计算Account的hashCode和判断equals
	public int hashCode()
	{
		return accountNo.hashCode();
	}
	public boolean equals(Object obj)
	{
		if (obj != null 
			&& obj.getClass() == Account.class)
		{
			Account target = (Account)obj;
			return target.getAccountNo().equals(accountNo);
		}
		return false;
	}
}