Given the class 'readonly' with the following behavior:
a (protected) integer instance variable named 'val'.
a constructor that accepts an integer and assigns the value of the parameter to the instance variable 'val'.
a method name 'getval' that returns the value of 'val'.

write a subclass named 'readwrite' with the following additional behavior:
any necessary constructors.
a method named 'setval' that accepts an integer parameter and assigns it the 'val' instance variable.
a method 'isdirty' that returns true if the setval method was used to override the value of the 'val' variable.

1. web and mobile applications allow users to be actively engaged in an online activity. a true b false 2. some examples of business applications purposes are to collaborate, share files, meet virtually in real-time, and accept payments. a true b false 3. an education application would most likely do which of the following? a allow users to watch popular movies and tv shows b connect users with social and business contacts c confirm users' travel plans d teach users a new language 4. a uniform resource locator (url) is how the internet knows where to take users when an address is typed into a browser. a true b false 5. deon is required to provide the citation information for his sources. what type of information should he collect from his sources? a author name, title, date of publication, date of access, url b connections to background information c interesting facts and statistics d notes on important information