Answer:
The hard disk is a spindle of magnetic disks, called platters, that record and store information. Because the data is stored magnetically, information recorded to the hard disk remains intact after you turn your computer off. The hard disk is housed inside the hard drive, which reads and writes data to the disk.
Explanation:
I would say A.Informal and casual online persona
Answer:
Explanation:
in order to allow a customer to select one or more option, the option to use is JCheckBox. Checkbox allows a user to chose more than one option from a list of option displayed. They are mostly presented in the form of a box which can be checked or unchecked. it allows a user to select more than a single option compare to radio button which allows a user to select just a single option from a list. So since the hair styling shop wants the user to select more than one option, The JCheckbox will be the right option. Further more, jLabel is just used to describe the purpose of the JCheckbox, like the name given to the checkbox.
I am 98% sure it is a callback function. Option "D"