Transaction.java

import java.util.*;

public class Transaction
{
    private double amount;

    private Date timestamp;

    private String memo;

    private Account inAccount;

    public Transaction(double amount,Account inAccount)
    {
	this.amount=amount;
	this.inAccount=inAccount;
	this.timestamp=new Date();
	this.memo="";
    }

    public Transaction(double amount,String memo,Account inAccount)
    {
	this(amount,inAccount);

	this.memo=memo;
    }

    public double getAmount()
    {
	return this.amount;
    }

    public String getSummaryLine(){
	if(this.amount>=0)
	    {
		return String.format("%s : $%.02f : %s",this.timestamp.toString(),this.amount,this.memo);
	    }else{
	    return String.format("%s : $(%.02f) : %s",this.timestamp.toString(),-this.amount,this.memo);
	}
    }
	
}