What does this code do and meaning of each part Class Point3D {public: Point3D(int, int);}; Point3D datum(15, 50);

class Airplane – highlights     -- planeID : String     -planeModel: String //”Boeing 757” etc.     --seatCapacity : int //would vary by outfitting …………     Assume getters and setters, toString(), constructor with parameters     and constructor ……………… Write lambdas using a standard functional interface to: a) Given a plane object and a required number of seats as an input, determine if the given plane meets or exceeds the required capacity b) Output the plane description if capacity is less than 80% of a specified number (We would use his for planning aircraft assigned to various routes. ) c) Adjust the seats in a plane by a specified positive or negative number [after modifications have been made to the interior.] …and write an example for each showing the usage, using an Airplane instance plane1

interface StudentsADT{void admissions();void discharge();void transfers();  }public class Course{String cname;int cno;int credits;public Course(){System.out.println("\nDEFAULT constructor called");}public Course(String c){System.out.println("\noverloaded constructor called");cname=c;}public Course(Course ch){System.out.println("\nCopy constructor called");cname=ch;}void setCourseName(String ch){cname=ch;System.out.println("\n"+cname);}void setSelectionNumber(int cno1){cno=cno1;System.out.println("\n"+cno);}void setNumberOfCredits(int cdit){credits=cdit;System.out.println("\n"+credits);}void setLink(){System.out.println("\nset link");}String getCourseName(){System.out.println("\n"+cname);}int getSelectionNumber(){System.out.println("\n"+cno);}int getNumberOfCredits(){System.out.println("\n"+credits);   }void getLink(){System.out.println("\ninside get link");}} public class Students{String sname;int cno;int credits;int maxno;public Students(){System.out.println("\nDEFAULT constructor…

What two steps are typically required for creating a reference type object?