orderline.java

java与模式 一书的源码

package com.javapatterns.decorator.printinvoice;

import java.text.NumberFormat;

public class OrderLine
{
    private String itemName;
    private int units;
    private double unitPrice;

    public String getItemName()
    {
        return itemName;
    }

    public void setItemName(String itemName)
    {
        this.itemName = itemName;
    }

    public int getUnits()
    {
        return units;
    }

    public void setUnits(int units)
    {
        this.units = units;
    }

    public double getUnitPrice()
    {
        return unitPrice;
    }

    public void setUnitPrice(double unitPrice)
    {
        this.unitPrice = unitPrice;
    }

    public void printLine()
    {
		System.out.println(itemName + "\t" + units
            + "\t" + formatCurrency(unitPrice)
            + "\t" + formatCurrency(getSubtotal()));
    }

    public double getSubtotal()
    {
        return unitPrice * units;
    }

    private String formatCurrency(double amnt)
    {
        return NumberFormat.getCurrencyInstance().format(amnt);
    }
}