15. All primitive type names begin with a lowercase letter, and it's the convention to begin all reference type names with an uppercase letter. (T/F)

16. Write the operator used for string concatenation.

17. What does the following code fragment print? String name" Johnson"; System.out.println (name.charAt (4))

18. In addition to comparing numbers, the operator also compares the contents of strings.

19. Write the import statement that enables you to use the Scanner class