Garbage collector works in following condition: 1. Employee john = new Employee() john=null; 2. Employee c1 =new Employee() Employee c2 = new Employee() c1=c2; 3. new Employee(); //anonymous object Please create a class /classes in java which contains examples related to above 3 conditons.
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Garbage collector works in following condition:
1.
Employee john = new Employee()
john=null;
2.
Employee c1 =new Employee()
Employee c2 = new Employee()
c1=c2;
3.
new Employee(); //anonymous object
Please create a class /classes in java which contains examples related to above 3 conditons.
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- In Java, Write a line of code that performs each of the following tasks : (a) Call superclass Employee's toString method from subclass Pieceworker's toString method. (b)Specify that class Pieceworker inherits from class Employee. (c) Call superclass Employee's constructor from subclass Pieceworker's constructor - assume that the superclass constructor receives three strings representing the first name, last name and social security number.Write all the code within the main method in the Test Truck class below. Implement the following functionality. a) Constructs two truck objects: one with any make and model you choose and the second object with gas tank capacity 10. b) If an exception occurs, print the stack trace. c) Prints both truck objects that were constructed. import java.lang.IllegalArgumentException ; public class TestTruck { public static void main ( String [] args ) { heres the truck class information A Truck can be described as having a make (string), model (string), gas tank capacity (double), and whether it has a manual transmission (or not). Include the following methods in your class definition. . An overloaded constructor which takes the make and model. This method throws an IllegalArgumentException if the make is "Jeep". An overloaded constructor which takes the gas tank capacity. This method throws an IllegalArgumentException if the capacity of the gas…In this exercise, you have to calculate the student's total marks using the concept of Classes Problem Statement# Write a Java class called Student with ● private fields: ○ name(String type) ○ mark1 and mark2 (double type) And methods: ● getMarks(int markNumber), a method which should return mark1 if markNumber equals 1 and mark2 otherwise. ● calcTotal() method should take the two marks entered and return their sum. Also define two constructors: ● A default constructor that takes no parameters and initializes the values to zeros and null. ● A constructor that takes the three variables and sets them as the values of the appropriate fields. Input# Name of the student and the marks obtained in the first and second tests Output# Sum of both marks Sample Input# Student student = new Student("Jack", 60, 70); Sample Output# getMarks(1) => 60 getMarks(2) => 70 calcTotal() => 130.0 Part of solution class Student { // Define private fields here public Student() { // Write…
- Given the following class, I need help writing a constructor that initializes all instance variables using appropriate parameters. I need to make sure it enforces the preconditions public class BrowserTab {private String title;private int id;/*** Creates a BrowserTab* @precondition title != null && id >= 0*/}An employee has a name, phone number and salary. A coach is a person with a senitority status, one of: junior, lead, and senior. Define the possible status values as constants. A staff is a person with a job title and job descrption. Your programming task is to Implement as abstract class named Employee and two subclass name Coach and Staff in Java as defined above Provide constructors for classes to initalize private variable Override the toString() method in each of the classes in task 1 to display the class name and the person's name Write an application to create objects of type Coach and Staff and print the person's name and the class name of the objectsThe Animal class has a default constructor with no parameters. Define a public overloaded constructor that takes two string parameters and an integer parameter for the type, the color, and the age of the animal. Ex: If the input is fox orange 5, then the output is: Animal: Unspecified, Unspecified, -1 Animal: fox, orange, 5 Animal.java public class Animal { privateStringtype; privateStringcolor; privateintage; publicAnimal() { // Default constructor type="Unspecified"; color="Unspecified"; age=-1; } /* Your code goes here */ publicvoidprint() { System.out.println("Animal: "+type+", "+color+", "+age); } } Zoo.java import java.util.Scanner; public class Zoo { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); String animalType; String animalColor; int animalAge; animalType = scnr.next(); animalColor = scnr.next(); animalAge = scnr.nextInt(); Animal emptyAnimal = new Animal(); Animal animal1…
- Java program Make a class Employee with a name and salary. Make a class Manager inherit from Employee. Add an instance variable, named department, of type String. Supply a method toString that prints the manager’s name, department, and salary. Make a class Executive inherit from Manager. Supply appropriate toString methods for all classes. Supply a test program that tests these classes and methods.If a Java class called Point is defined as follows public class Point{ //a point in three dimension (x, y, z) private int x, y, z; //Note the equals( ) method is not explicitly //defined here inside the class } Answer the following questions: a). Add the default constructor in the class Ans: b). Add another constructor that allows a user to create a Point object with the given x, y z coordinates Ans: c). Write a Java statement that creates a Point object called p1 using the default constructor. Ans: d). Write a Java statement that creates a Point object called p2 that has coordinates x=4, y=3, and z=-1How to fix error: LocalResource.java:194: error: constructor LocalResource in class LocalResource cannot be applied to given types; super( dob, sector); class LocalConsultant extends LocalResource implements Citizen, Consultant { private String skill; private double permitTax; public LocalConsultant(String dob, String sector, double skillPrice, double taxRate, String skill) { super( dob, sector); this.skill = skill; this.permitTax = taxRate * skillPrice; } public double earnFromSkill(){ return permitTax; } public String getContact(){ return "LocalConsultant#" + getId(); } public double getPay() { return earnFromSkill()-permitTax; }
- FOR JAVA Implement the following classes / abstract classes below. Monster abstract class which has health point (int), damage point (int), name (String), resistance rate (int) fields and following methods. – A constructor that takes the name as a parameter and sets the health and damage points to random numbers between 10 and 100. – isDead() method which returns true if hp is less than or equal to 0, and false otherwise. – fight() method which prints the applied damage after resistance (see below). WaterMonster class whose resistance rate is %20. For example, if the damage of an instance of this class is 100, the fight method should print 80. FireMonster class whose resistance rate is %10. SlicingMonster class whose resistance rate is %5.The Article class has a default constructor with no parameters. Define a public overloaded constructor that takes two string parameters and initializes the article's title and author with the strings. Ex: If the input is Airport Hall, then the output is: Article: Unspecified, Undefined Article: Airport, Hall Article.java public class Article { privateStringtitle; privateStringauthor; publicArticle() { // Default constructor title="Unspecified"; author="Undefined"; } /* Your code goes here */ publicvoidprint() { System.out.println("Article: "+title+", "+author); } } Archive.javaWrite a Java class Person for dealing with persons. Your class must have the following features: Person id: long name: String gender: String + Person() + Person (id: long, name: String, gender: String) + Create setter and getter for all data fields. + Override toString() method: you have to return required data Fields values. Constructor: public Person(): A default constructor, should initialize the data fields to their default values. public Person (SSN: long, name: String, gender: String): A constructor with parameters, that creates the person object by setting specified parameters. Instance methods: public void setName(name: String): Used to set the full name of the person. public void setGender(gender: String): Used to set the gender of the person. public long getId(): This method returns the id of the person. public String getGender(): This method returns the gender of the person. public String getName(): This method returns the full name of the person. public String…
