account.java

来自「东软JAVA内部资料」· Java 代码 · 共 33 行

package com.neusoft.course.oo;

public class Account {
	
	protected double balance;
	
	public Account() {
		this(0);
	}
	public Account(double initBalance) {
		balance = initBalance;
	}
	
	public double getBalance() {
		return balance;
	}
	public boolean deposit(double amount) {
		balance = balance + amount;
		return true;
	}
	public boolean withDraw(double amount) {
		boolean result = false;
		if (amount <= balance) {
			balance = balance - amount;
			result = true;
		} 
		return result;
	}
	public String getInfo() {
		return String.valueOf(balance);
	}
}