Need Help completing these question

Language: Java

1) A class named 'CDPlayer' that will be instantiated outside of its package implements an interface named 'Recordable'. Write the header for this class. (Do not include the opening brace for the class.)

2)

The Employee class implements the Comparable interface. It contains a private double field named 'salary'. Fill in the blank to complete the compareTo method so that employees can be sorted by salary. Do this in one statement.

public int compareTo(Employee other) { ___________________________________; }

3)