It was replaced with the new discount.out
created for this run of the program.
Sometimes you want to run a program several times and put the output of all the runs into a single file. For example, say that you want the discounted price of several items to be saved in one file. Here is how to do this:
C:\temp>java DiscountErr > discount.out Enter list price in cents: 100 Enter discount in percent: 10 Discount Price: 90 C:\temp>java DiscountErr >> discount.out Enter list price in cents: 150 Enter discount in percent: 15 Discount Price: 128 C:\temp>java DiscountErr >> discount.out Enter list price in cents: 200 Enter discount in percent: 30 Discount Price: 140
The double "greater than" signs >>
mean to add the new output to the end of the file
discount.out.
This is called concatenation of the output to a file.
Here is what the disk file now looks like:
C:\temp>type discount.out Price in cents: 100 Discount: 10 Discount Price: 90 Price in cents: 150 Discount: 15 Discount Price: 128 Price in cents: 200 Discount: 30 Discount Price: 140 C:\temp>
After all the above has been done, what would be the result of the command:
C:\temp>java Discount > discount.out