body.java

java装饰模式。通过装饰完成对上层类的封装。

import java.io.*;
public class body extends abs
{
	abs theAbs;

	public body(abs theAbs)
	{
		this.theAbs=theAbs;
	}
	/*print the body*/
	public void display()
	{
		theAbs.display();
		System.out.println("-----------------------------------------------\n");
		System.out.println("Item      Units        Unit Price      Subtotal\n");
	}
	public double getFinalCost()
	{
		return theAbs.getFinalCost();
	}
}