Which of the following is a prototype of default constructor for class Car?

2. Student (extend the class Person) that has the following: Data Fields: private int ID prvate double grade Constructor: Constructor to create a Student object with specifiedname address, ID & grade. Methods: Accessor and mutator methods for all data fields.

Assume you have the following two classes: public class Bag{ private String name; public Bag() { name = "Fancy bag"; } } public class Backpack extends Bag { private int noCompartments; // number of compartments in a backpack public Backpack() { noCompartments = 1; } %3D public int getNoCompartments() { return noCompartments; } } Assume that you have a variable of type Bag initialized to an object instance of type Backpack, as follows: Bag bag = new Backpack(); Show a fragment of code to print the number of compartments in a Bag referenced by the variable bag, as assigned above.

Incorrect Question 4 Consider public class Species { } // fields private String name; private int population; private double growthRate; // constructor public Species () { } name = "No Name Yet"; population = 0; growthRate = 33.3; Which of the following is the best setter method for the population instance variable? public boolean setPopulation(int newPopulation) { } if (newPopulation>= 0) { } population = newPopulation; return false; } return true; public public void setPopulation (int newPopulation) if (newPopulation>= 0) { } population newPopulation; public void setPopulation (int newPopulation) { population } = newPopulation;

class Lease{     private String name;     private int aptNumber;     private double rent;     private int term;     private static final int FEE = 10;     public Lease(){        name = "XXX";        aptNumber = 0;        rent = 1000;        term = 12;     }     public void setName(String tenant)  {        name = tenant;     }     public void setAptNumber(int apt){        aptNumber = apt;     }     public void setRent(double monthRent) {        rent = monthRent;     }     public void setTerm(int t){        term = t;     }     public String getName(){        return name;     }     public int getAptNumber(){        return aptNumber;     }     public double getRent(){        return rent;     }     public int getTerm(){        return term;     }     public void addPetFee(){        rent = rent + FEE;     } }    Create a class named TestLease as instructed below:  Instantiate four Lease objects in the main()method.  Change the aptNumber value for the first object to 20  Change the rent value…