b. public class Client { public static void main (String [] args){ Color v = new Red (); v.doColor (); Complete the above program by using method overriding. Justify your answer why you claim the above piece of code is dynamic method dispatch.
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- class overload { int x; double y; void add(int a , int b) { x = a + b; } void add(double c , double d) { y = c + d; } overload() { this.x 0; %3D this.y = 0; } %3D } class Overload_methods { public static void main(String args[]) { overload obj int a = 2; double b - 3.2; obj.add(a, a); obj.add(b, b); System.out.println(obj.x + } = new overload(); + obj.y); } #3Run the codeThe UsingMethod class consists of a main method and a method called xMethod. Whatwill the code print? public class UsingMethod { public static void main(String[] args) { double z = xMethod(3.5, 5.5); System.out.println(z); } public static double xMethod(double x, double y) { return x + y; } }Java: ShowStudent.java: class ShowStudent { public static void main (String args[]) { Student pupil = new Student(); pupil.setIdNumber(234); pupil.setPoints(47); pupil.setHours(15); pupil.showIdNumber(); pupil.showPoints(); pupil.showHours(); System.out.println("The grade point average is " + pupil.getGradePoint()); } } ShowStudent2.java: class ShowStudent2 { public static void main (String args[]) { Student pupil = new Student(); pupil.showIdNumber(); pupil.showPoints(); pupil.showHours(); System.out.println("The grade point average is " + pupil.getGradePoint()); } } Student.java: class Student { // the private data members private int idNumber; private int hours; private int points; // Constructor added in part c Student() { } // end of constructor added in part c // the public get and set methods public void…
- public class worksheet3_1 { public static void main(String[] arg) { ShadowingExample example = new ShadowingExample(); example.x = 99; example.sampleMethod(); }}class ShadowingExample { int x; public void sampleMethod() { int x = 0; System.out.println("the value of local variable x = " + ………………………………………………); System.out.println("the value of instance variable x = " + …………………………………………); }} what should be written in the second print statement so that the output is: the value of instance variable x = 99 what should be written in the first print statement so that the output is: the value of local variable x = 0 options are: samplemethod.x this.x shadowingexample.x x Answer 1 Question 1public class Client {public static void main(String [] args){Color v = new Red();v.doColor();}} Complete the above program by using method overriding. Justify your answer why you claim theabove piece of code is dynamic method dispatch.public class LabProgram { public static void main(String args[]) { Course cis162 = new Course(); int beforeCount; String toDrop; // Example students for testing cis162.addStudent(new Student("Henry", "Nguyen", 3.5)); cis162.addStudent(new Student("Brenda", "Stern", 2.0)); cis162.addStudent(new Student("Lynda", "Robison", 3.2)); cis162.addStudent(new Student("Sonya", "King", 3.9)); toDrop = "Stern"; beforeCount = cis162.countStudents(); cis162.dropStudent(toDrop); System.out.println("Course size: " + beforeCount + " students"); System.out.println("Course size after drop: " + cis162.countStudents() + " students"); } } import java.text.DecimalFormat; // Class representing a student public class Student { private String first; // first name private String last; // last name private double gpa; // grade point average // Student class constructor public Student(String f, String l, double g) {…
- class class { public static void main(String args[]) { int a =5; int b =10; first: { second: { third: { if(a == b >>1) break second; } System.out.println(a); } System.out.println(b); } } } Give result for the code Java Try to do ASAPpublic class Geometry{public static void main(String[] args){//asks for user's choice Scanner in = new Scanner(System.in);displayMenu();selectOption(choice);System.out.println("Enter your choice (1-3): ");int choice1 = in.nextInt();System.out.println("Thanks for using the Geometry Calculator - Goodbye!");//Prints if input is a number that is not one of the choiceswhile(choice1 < 1 || choice1 > 3 ){System.out.println("Invalid choice. Please enter 1 - 3: ");choice1 = in.nextInt();}}/**Displays the menu*/public static void displayMenu(){System.out.println("Welcome to the Geometry Calculator Application");System.out.println("1. Calculate the Area of a Circle");System.out.println("2. Calculate the Area of a Rectangle");System.out.println("3. Calculate the Area of a Triangle");}/** This method calculates the area of the circle@return the area of the circle*/public static double circle()// calculates the area of the circle{Scanner in = new Scanner(System.in);System.out.println("What is…Exercise (5): Strings A. String Length method public class MyClass { public static void main(String[] args) { String txt = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; System.out.println("The length of the txt string is: " + txt.length()); ) } B. Uppercase and Lowercase methods public class MyClass { public static void main(String[] args) { String txt = "Hello World"; System.out.println(txt.toUpperCase ()); // Outputs "HELLO WORLD" System.out.println(txt.toLowerCase ()); // Outputs "hello world" }} C. String concatenation The + operator can be used between strings to combine them. This is called concatenation. You can also use the concat() method to concatenate two strings public class MyClass { public static void main(String[] args) { String firstName = "Amani"; String fatherName = "Sabri"; + fatherName); System.out. println(firstName + System.out.println(firstName.concat (fatherName)); }} 1. Computer Programming (1) By: lect. Amani Abumansour
- public class TestWord { public static void main(String[] args) { /* Word w1 = new Word("Go Cubs Go", "Cub"); System.out.println("New Word object"); System.out.println("Superclass word: " + w1.getSentence()); System.out.println("Subclass word: " + w1.getNoVowelsWord()); System.out.println("Is word a substring of sentence? " + w1.isSubstring()); System.out.println(); Word w2 = new Word("Applepie", "Apple"); System.out.println("New Word object"); System.out.println("Superclass word: " + w2.getSentence()); System.out.println("Subclass word: " + w2.getNoVowelsWord()); System.out.println("Is word a substring of sentence? " + w2.isSubstring()); System.out.println(); System.out.println("w1 and w2 are the same? " + w1.equals(w2)); */ } }class Param3 { public int x; private void increase(int p) { x = x*p; } public void calculateX(int y) { increase(y); } public int getX() { return x; } } // in another class Param3 q3 = new Param3(); q3.x = 5; q3.calculateX(7); System.out.println(q3.getX()); what would be the answer for the last two lines ? also above were x = x*p do both x in here are the fields? wouldn't that be cnofusing?10. public static void methodl (int i, int num) { for (int j = 1; j <= i; j++) { " "); System.out.print (num + num *= 2; } System.out.println(); } public static void main(String[] args) { int i = 1; while (i <= 6) { methodl (i, 2); i++; }