account.java

来自「看图说话」· Java 代码 · 共 45 行

package bank.v12;

/**
 * 基本帐户
 * @author oyotong
 *
 */
public abstract class Account {
	
	protected double balance;//余额
	
	/**
	 * 开户
	 * @param balance 初始额度
	 */
	public Account(double balance) throws OpenAccountException{
		if(balance < 10){
			throw new OpenAccountException("至少需要10元才可以开户！");
		}
		this.balance = balance;
	}

	/**
	 * 取钱
	 * @param out
	 * @return 余额
	 */
	protected abstract double withdraw(double out) throws OverDraftException;
	/*{
		balance -= out;
		return balance;
	}*/

	/**
	 * 存钱
	 * @param in
	 * @return 余额
	 */
	protected double deposit(double in)
	 {
		balance += in;
		return balance;
	}
}