a. Write the definition of the print method of DClass that overrides it. b. Write the definition of the method set of the class DClass.
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![2. Consider the following class definitions:
public class BClass
private int x;
public void set(int a)
{
x = a;
}
public void print()
System.out.print(x);
}
public class DClass extends BClass
{
private int y;
public void set(int a, int b)
//Postcondition: x =a; y=b;
}
public void print( ) {..}
a. Write the definition of the print method of DClass that overrides it.
b. Write the definition of the method set of the class DClass.
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- class A {protected int x1,y1,z; public: A(a, b,c):x1(a+2),y1(b-1),z(c+2) { for(i=0; i<5;i++) x1++; y1++;z++;}}; class B {protected: int x,y; public: B(a,b):x(a+1),y(b+2) { for(i=0; i<5;i++) x+=2; y+=1;}}; class D:public B, virtual public A { private: int a,b; public: D(k,m,n): a(k+n), B(k,m),b(n+2),A(k,m,n) { a=a+1;b=b+1;}}); int main() {D ob(4,2,5);} what the values of x1,y1 and z2. Add a constructor for Animal class shown. The constructor should pass in a string parameter named "sound". 1 using System; 2 3 public class Animal 4 { 5 public string Sound { get; set; } public void Speak() { Console.Writeline("The dog says " + Sound); } 10 11 } 12 13 public class Program 14 { public static void Main() { 15 16 17 18 } 19 } A 00Question 15 1(8).png public class numClass { private int a; private static int y = 10; public numClass(int newx) {a-newx; } public void set(int newx) {a=newx; y+=a;} public void setY(int newY) {y-newY; } public static int getY() { return y; } // end of class Blank 1 Blank 1 Add your answer public class output[ public static void main(String[] args) { numclass one new numClass(10); numclass two new numClass (2); try{ one.sety(30); two.set(4); if(one.getY()-30) throw new Exception ("30"); one. sety (40); } catch(Exception e) { two.setY(50); } System.out.println(two.getY()); // end of main } // end of class ***
- 5Consider the following class definition: (8) class base { public: void setXYZ(int a, int b, int c) ; voidsetX ( int a ) ; int getX ()const{returnx; } void setY ( int b ); intgetY()const{returny; } int mystryNum () {return ( x &*#x00A0;y - z &*#x00A0;z) ;} void print () const; base () } base(int a, int b, int c); protected: void setz ( int c) { z= c; } void secret(); int z= 0; private: int x= 0; int y = 0; }; a. Which member functions of the class base are protected? b. Which member functions of the class base are inline? c. Write the statements that derive the class myclass from class base as a public inheritance. d. Determine which members of class base are private, protected, and public in class myclass.3. private int X; public int z; public Secret () } 0 = X { public Secret(int a) } { public Secret (int a, int b) } { public String toString() '. + A + u = K ' + X + w count ! (qunoo + { public static void incrementY () } { 54. How many constructors are present in the class definition above? C. 2 d. 3 a. b. 1 c. Sets the value of x to 0 and the value of z to 1 d. There is no default constructor. 55. What does the default constructor do in the class definition above? a. Sets the value of x to 0 b. Sets the value of z to 1 56. Based on the class definition above, which of the following statements is illegal? Secret.incrementY(); b. Secret.count++; c. Secret.z++B d. None of these
- Description: Create a class named ComparableDog that extends Animal and implements Comparable interface. Implement the compareTo method to compare the Dogs on the basis of age. Write a test class to find the bigger age of two instances of ComparableDog Objects, and complement the ComparableDog class with the missing part. 1) The test program, the ComparableDog class, and its super class Animal are given as follows. // Main method public static void main(String[] args) { // Create two comparable Dogs ComparableDog dog1 = new ComparableDog(3); ComparableDog dog2 = new ComparableDog(4); System.out.println("Dog1:" + dog1); System.out.println("Dog2:" + dog2); if(dog1.compareTo(dog2) == 1) System.out.println("Dog1 is older than Dog2"); else if(dog1.compareTo(dog2) == -1) System.out.println("Dog1 is younger than Dog2"); else System.out.println("Dog1 and Dog2 have the same age"); }…7. public class Father { public String name; public int age; // customer name Father(){ name="Hassan"; age=50;} public void display(){ System.out.println("Name:"+name); System.out.println("Age:"+age); }} Figure 3 i. Based on Figure 3, create a class named Child that inherits the Father class. Declare an instance name location (String) for class Child. ii. Define a constructor in class Child and give an appropriate initial values for the instance (name, age, location). Define a method display () in class Child, execute the display () method in superclass using the keyword super. Method display () in class Child should print the information of name, age and location. ii.5) Consider the following code. public class Test { public static void main(String[] args){ NClass nc = new NClass(); nc.t += 1; } } class NClass { public imt t; private NClass() {//Constructor www. } } a) The program has a compilation error because the NClass class has a private constructor which is not accessible within the Test class. b) The program does not compile because the parameter list of the main method is wrong. c) The program compiles, but has a run time error because t has no initial value. d) The program compiles and runs fine.
- public class Father { public String name; public int age; // customer name Father(){ name=”Hassan”; age=50;} public void display(){ System.out.println(“Name:”+name); System.out.println(“Age:”+age); } } 1. Based on Figure 3, create a class named Child that inherits the Father class. Declare an instance name location (String) for class Child. 2. Define a constructor in class Child and give an appropriate initial values for the instance (name, age, location). 3. Define a method display () in class Child, execute the display ( ) method in superclass using the keyword super. Method display ( ) in class Child should print the information of name, age and location 4. Create other class named Main for the main method and create 2 objects for the 2 classes (Father and Child). Then execute the display ( ) method for Father and Child. Example of the output as in Figure 4: Father's info: Name: Josh Age: 50 Child's info: Name: Christy Age: 20 Location:…Question :- Add a statement to the classA to test whether myChar is accessible. public class ClassB { public int x = 1; int y = 2; private int z =3; } public class ClassA { public static void main(String[] args) { ClassB cb = new ClassB(); // System.out.print(cb.x); /* 1 */ // System.out.print(cb.y); /* 2 */ // System.out.print(cb.z); /* 3 */ } }public class Cat extends Pet { private String breed; public void setBreed(String userBreed) { breed = userBreed; } public String getBreed() { return breed; }} public class Pet { protected String name; protected int age; public void setName(String userName) { name = userName; } public String getName() { return name; } public void setAge(int userAge) { age = userAge; } public int getAge() { return age; } public void printInfo() { System.out.println("Pet Information: "); System.out.println(" Name: " + name); System.out.println(" Age: " + age); } } import java.util.Scanner; public class PetInformation { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); // create a generic Pet and a Cat Pet myPet = new Pet(); Cat myCat = new Cat(); // declare variables for pet and cat info String petName, catName, catBreed; int petAge,…
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