write program that consists of three classesaband csuch that extends and extends each class should define an instance variable named " (that iseach has its own variable named xdescribe way for method in to access and set ' version of to given valuewithout changing or ' version - write set of java classes that can simulate an internet applicationwhere one partyaliceis periodically creating set of packets that she wants to send to bob an internet process is continually checking if alice has any packets to sendand if soit delivers them to bob' computerand bob is periodically checking if his computer has packet from aliceandif sohe reads and deletes it projects - write java program that inputs document and then outputs bar-chart plot of the frequencies of each alphabet character that appears in that document - write java program that simulates handheld calculator your program should be able process inputeither in gui or from the java consoleforthe buttons that are pushedand then output the contents of the screen after each operation is performed minimallyyour calculator should be able to process the basic arithmetic operations and reset/clear operation - fill in code for the personpairdirectory class of code fragment assuming person pairs are stored in an array with capacity , the directory should keep track of how many person pairs are actually in it - write java program that can take positive integer greater than as input and write out the number of times one must repeatedly divide this number by before getting value less than -