horstmann.ch05_invoice

Interface InvoiceFormatter

All Known Implementing Classes:

SimpleFormatter

public interface InvoiceFormatter

This interface describes the tasks that an invoice formatter needs to carry out.

Method Summary

Modifier and Type	Method and Description
java.lang.String	formatFooter() Formats the footer of the invoice.
java.lang.String	formatHeader() Formats the header of the invoice.
java.lang.String	formatLineItem(LineItem item) Formats a line item of the invoice.

Method Detail

formatHeader

java.lang.String formatHeader()

Formats the header of the invoice.

Returns:

the invoice header

formatLineItem

java.lang.String formatLineItem(LineItem item)

Formats a line item of the invoice.

Returns:

the formatted line item

formatFooter

java.lang.String formatFooter()

Formats the footer of the invoice.

Returns:

the invoice footer