(using classes SuperOverride & SubOverride) public class TestMethod { public static void main(String[] args) { Superoverride sp; sp = new SuperOverride () ; sp.methodTwo (); // calls superclass methodTwo ().. sp = new Suboverride (); sp.methodTwo (); // calls subclass methodTwo () .. note that the // same object variable (sp) is used in both // calls, with different results. The instanceof operator can be used to determine whether or not the current object reference held by an object variable is of a particular class type.
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Please encode these classes and run them for inspection/analysis/scrutiny.
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- What is outpout? public class Vehicle { public void drive(){ System.out.println("Driving vehicle"); } public class Plane extends Vehicle { @Override public void drive(){ System.out.println("Flying plane"); } public static void main(String args[]) { Vehicle myVehicle myVehicle.drive(); } } = new Plane(); syntax error Driving vehicle Flying plane Flying plane O Driving vehicletoString() and equals() Methods This lab will demonstrate how the toString() and equals() methods work when they are not overridden. Type up the code and submit the BOTH results. CODE public class ObjectToString( public static void main(String[] args) { ClassOne co new ClassOne(); ClassTwo ct = new ClassTwo(); } } public class Classone { System.out.println(co); System.out.println(ct); System.out.println(co.equals(ct)); public void printfle() { System.out.println("I am from ClassOne"); } public class ClassTwo ( public void printMe() { } System.out.println("I am from ClassTwo"); Run the program and notice the output.public class A { public void funl () { System.out.println ("Al"); } public class B extends A { @Override public void funl () { super.fun1 () ; System.out.println ("B1"); public void fun2 () { System.out.println ("B2"); public class C extends B { @Override public void funl () { System.out.println ("C1");
- public class Base public void methodOne () { System.out.print ("A"); methodTwo (); } } public void methodTwo () { System.out.print("B"); } public void methodThree () { } public void methodThree (String s) { System.out.print("Hello, " + s); } System.out.print("Hello"); } class Derived extends Base { public void methodOne () { super.methodOne (); System.out.print ("C"); } public void methodTwo () { super.methodTwo (); System.out.print("D"); What is the name of the parent class? What is the name of the overloaded method? What is the name of the overriden method? What is the name of the child class? ich of Choose... Choose... Choose... Choose... following statements will give an error?package go; package demo; public class Pokemon { import ; // import Pokemon class (#1) private int hitPoints; static int population; public class Main { public static void main(String[] args) { void attack() { // implementation this.evolve(); } public void evolve() { // implementation } } Pokemon pika = new Pokemon(); pika.hitPoints = 30; (#2) System.out.print(Pokemon.population);(#3) pika.attack(); (#4) pika.evolve(); (#5) } 1. How can we retrieve the value of hitPoints without allowing any other class to change its value? a) Change the access modifier of bitPoints to public b) Change the access modifier of hitPoints to default c) Make the hitPoints a static attribute d) Declare a new public method, say şetHitPoints(int value), that sets the value of hitPoints e) None of the abovepublic 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)); */ } }
- 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) {…What is included in the method private void buildLetterTable() { implemented in the class Anagramspublic class Myclass{ private static int count=0; private int x; //} public Myclass(int i) { x=i; } public void incrementCount(){ count++; } public void printX(){ System.out.println("Value of x : "+ x); } public static void printCount(){ System.out.println("Value of Count : "+count); } } public class MyclassDemo{public static void main(String[] args){ Myclass myObject1 = new Myclass(5); Myclass myObject2 = new Myclass(7); }} what is the outputof the following java code? (Assume that following statements are written inside main) g) my Object1.setX(14); output: h) myObject1.incrementCount(); output: i) myObject1.printX(); output: j) myObject1.printCount(); output: k) myObject2.printCount(); output:
- public class Main{ public static void main(String args[]) { Main m = new Main(); m.go(); } public void go() { Customer c = new Customer("Tom", "Smith"); Order o = new Order(c); o.addItem(new Item("Greeting Card", 1.50, 1)); o.addItem(new Item("Baseball Glove", 54.00, 1)); o.addItem(new Item("Notebook", 2.50, 3)); System.out.println(o); }}package go; package demo; public class Pokemon { import ; // import Pokemon class (#1) public class Main { private int hitPoints; static int population; public static void main(String[) args) { void attack() { // implementation this.evolve(); } public void evolve() { // implementation Pokemon pika = new Pokemon(); pika.hitPoints = 30; (#2) System.out.print(Pokemon.population);(#3) pika.attack(); (#4) pika.evolve(); (#5) } } 1) Which of the following statements is true? a) Since Pokemon is public, the import statement in (#1) is optional b) If Pokemon and Main are in the same package, the import statement in (#1) is no longer needed c) If Pokemon and Main are in the same package, codes in (#2)-(#5) will all be valid d) None of the above | 2) Provide the fully qualified name of Pokémon class: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?