How the delete key is used

i guess to delete words and to erase stuffs from the computer

Explanation:

hope it helps : )

The keyboard key used to delete the text character at, or to the right of, the screen cursor. Pressing Delete (DEL) also deletes the currently highlighted text, image or group of images. The Delete key removes characters to the right of the cursor, whereas the Backspace key deletes to the left. See Backspace key.

Explanation: hope this help.

what is inputmismatchexception?

answerfc- file compare;