Answer:
cryptography
Explanation:
cryptography
In computer science, cryptography refers to secure information and communication techniques derived from mathematical concepts and a set of rule-based calculations called algorithms, to transform messages in ways that are hard to decipher
I'm not sure but maybe one of the two websites can help you
.
http://wiki.netbeans.org/MusicAppUsingRESTRemoting
https://mukeshscience.wordpress.com/2014/05/26/adding-audio-to-java/
Answer:
Home & End are used to move the cursor to the start and end of a line
Numeric Keypad is the answer