Cant comment or update questions but I need 8.12 8.7 and 8.8 are in the other picture 8.12 is the combine version for both of them

ating point variables to represent the pri be initialized wh rite a program to test your class. Use loa class. Provide a constructor that enables an object of this class to Provide a no-argument constructor with default values in case n public methods that perform the following operations: o initializers are pr a) Add two Complex numbers: The real parts are added together and the ir re added together. b) Subtract two Complex numbers: The real part of the right operand i s su the real part of the left operand, and the imaginary part of the right oprand tracted from the imaginary part of the left operand c) Print Complex numbers in the form CrealPart, imaginaryPart). 8.12 (Date and Time Class) Create class DateAndTime that combines the modified Tine2 dlas Exercise 8.7 and the modified Date class of Exercise 8.8. Modify method incremencHour to cl method nextDay if the time is incremented into the next day. Modify methods toString and to versa1String to output the date in addition to the time. Write a program to test the new class ate AndTime. Specifically, test incrementing the time to the next day 8.13 (Set of Integers) Create class IntegerSet. Each Integerset object can hold integers in th range 0-100. The set is represented by an array of booleans. Array element a[i] is true if integet i is in the set. Array element a[j] is false if integer j is not in the set. The no-argument constructor initializes the array to the "empty set" (i.e., all false values). 8.14 Provide the following methods: The static method union creates a set that's the set- -thoo retic union of two existing sets (i.e., an element of the new set's array is set to true if that elemen . Th s true in either or both of the existing sets-otherwise, the new set's element is set to false) tatic method intersection creates a set which is the set-theoretic intersection of two existing .e., an element of the new set's array is set to false if that element is false in either or both of