account.java

是一个关于复数计算的问题

public class Account
{
	private static long  accoutBaseNumber=10000001;
	private long accountNumber;
	private String name;
	private long openTime;
	private String ID;
	private double yuan;
	public Account(String name,String ID,double yuan)
	{
		this.name=""+name;
		this.ID=""+ID;
		this.yuan=yuan;
		//this.openTime=Date.getTime();
		accoutBaseNumber++;
		this.accountNumber=accoutBaseNumber;
	}
	public Account(String name,String ID)
	{
		this(name,ID,0);
	}
	public double cunkuan(double cu)
	{
		yuan+=cu;
		return cu;
	}
	public double qukuan(double qu)
	{
		yuan-=qu;
		return yuan;
	}
	public void print()
	{
		System.out.println("帐号 "+this.accountNumber);
		System.out.println("用户名 "+this.name);
		System.out.println("身份证 "+this.ID);
		System.out.println("余额 "+this.yuan);
		System.out.println("开户时间 "+openTime);
	}
}
class Account_ex
{
	public static void main(String args[])
	{
		Account a1=new Account("张华","1234567",2000);
		a1.print();
	}
}