Question:This Programs Must: 1. Read From Order.Txt And Write To Invoice.Txt. 2. Write A Header To The Output File. 3. For Each Line Of

This programs must:

1. Read from order.txt and write to invoice.txt.

2. Write a header to the output file.

3. For each line of the input file:

a. Read the quantity, price, and description.

b. Compute the extension (quantity * price)

c. Format and write these values to the output file using printf.

d. Keep track of the running total.

4. After all lines have been processed, write the total to the file using printf.

Refer to AddLineNumbers2.java and Reviews.java for pieces needed to develop this program.

Do not assume that the input file has a certain number of lines. Your program must

continue reading until the end of the input file is reached.

Before starting, look at invoice_example.txt to see how the invoice.txt file you are going to create must be formatted.