A A Java class can contain O Variables O Methods, Constructors Inner Classes (A class inside another class) O All the above
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![A Java class can contain
Variables
Methods, Constructors
Inner Classes (A class inside another class)
O All the above](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9ab059db-1596-42d8-b9ff-d877be6daa56%2Fe6864d24-1928-4f34-ba60-80fefa1e69e1%2Flft1umj_processed.png&w=3840&q=75)
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- PLZ help with the following IN JAVA When defining an inner class to be a helper class for an outer class, the inner classes access should be marked as: Public Private Protected Package accessThis is for javaJAVA CODE Write a java set of classes that could be used to do simple calculations on geometricobjects. The set should include the following classes: a) Shapes ,containing abstract methods( a methods that is declared without animplementation) area and perimeter b) Rectangle, a subclass of Shape, containing a constructor (with parameters forlength and width) along with methods area and perimeter. c) Triangle, a subclass of Shape, containing a constructor (with parameters for the three sides of a triangle) along with methods area ( s = (a+b+c)/2, A = sqrt( s(s-a)(s-b)(s-c) ) ) and perimeter d) Square, a subclass of Rectangle, containing a constructor (with a parameter for thelength of a side) and methods that invoke the methods of the Rectangle class todetermine the perimeter and area of a square.
- Java Program This assignment requires one project with two classes. Class Employee Class Employee- I will attach the code for this: //Import the required packages. import java.text.DecimalFormat; import java.text.NumberFormat; //Define the employee class. class Employee { //Define the data members. private String id, lastName, firstName; private int salary; //Create the constructor. public Employee(String id, String lastName, String firstName, int salary) { this.id = id; this.lastName = lastName; this.firstName = firstName; this.salary = salary; } //Define the getter methods. public String getId() { return id; } public String getLastName() { return lastName; } public String getFirstName() { return firstName; } public int getSalary() { return salary; } //Define the method to return the employee details. @Override public String toString() { //Use number format and decimal format //to…Java Program This assignment requires one project with two classes. Class Employee Class Employee- I will attach the code for this: //Import the required packages. import java.text.DecimalFormat; import java.text.NumberFormat; //Define the employee class. class Employee { //Define the data members. private String id, lastName, firstName; private int salary; //Create the constructor. public Employee(String id, String lastName, String firstName, int salary) { this.id = id; this.lastName = lastName; this.firstName = firstName; this.salary = salary; } //Define the getter methods. public String getId() { return id; } public String getLastName() { return lastName; } public String getFirstName() { return firstName; } public int getSalary() { return salary; } //Define the method to return the employee details. @Override public String toString() { //Use number format and decimal format //to…Java Program This assignment requires one project with two classes. Class Employee Class Employee- I will attach the code for this: //Import the required packages. import java.text.DecimalFormat; import java.text.NumberFormat; //Define the employee class. class Employee { //Define the data members. private String id, lastName, firstName; private int salary; //Create the constructor. public Employee(String id, String lastName, String firstName, int salary) { this.id = id; this.lastName = lastName; this.firstName = firstName; this.salary = salary; } //Define the getter methods. public String getId() { return id; } public String getLastName() { return lastName; } public String getFirstName() { return firstName; } public int getSalary() { return salary; } //Define the method to return the employee details. @Override public String toString() { //Use number format and decimal format //to…
- Polymorphism in Java is Select one: a.when a program uses several different types of objects, each with its own variable. b.when a single variable is used with several different types of related objects in a program. c.when a single parent class has many child classes The following code fragment is polymorphic: for(Shape shape : shapes) if(shape instanceof Circle) { Circle c = (Circle) shape; // cast to a circle c.draw(g); // call the circle's draw method } else if(shape instanceof Rect) { Rect r = (Rect) shape; r.draw(g); } True or False The following code fragment is polymorphic: for(Shape shape : shapes) shape.draw(g) True or FalseIn Java a class is allowed to inherit from as many superclasses as needed. True FalseUser-Defined Classes: In Java, Design and implement the class Day thst implrmntd the dsy of the week in a program. The class Day should store the day of the week, such as, Sun for Sunday. The program should be able to perform the following operations on an object of type Day: 1. Set the day 2. Print the day 3. Return the next day 5. Return the previous day 6. Calculate and return the day by adding certian days to the current day. For examole, if the current day is Monday and we add four days, the day to be returned is Friday. Similarly, if today is Tuesday and we add 13 days , the day to be returned is Monday 7. Add appropriate constructors. 8. Write the definitons of the methods to implement the operations for the class Day, as defined in a through g. 9. Write a program to test various operaions on the class Day.
- The picture is code tester public class WordVowels { // Step 2: Declare an instance variable to store the text // Step 3: Write the following constructor including // possible Javadoc tags /** * Constructs a Word object by initializing the * instance variable to the passed in parameter. * */ // Step 4: Write method getVowels() including // possible Javadoc tags /** * Gets all vowels of the stored text and returns * "" if the stored test does not have any vowels. * */ // Step 5: Write method vowelsFirst() including // possible Javadoc tags /** * Gets a string containing all vowels of the stored text * followed by all other chars of the stored text. * */ // Step 6: Write method longestVowelGroup() including // possible Javadoc tags /** * Gets the longest vowel group and returns "" * if the stored text does not have any vowels. * */…Define a java Name class with attributes: String firstname, middle name, lastname. Include the following methods: - A constructor with 3 parameters. Initialize the 3 member variables to the parameters being passed. Also, include the default constructor. - getter and setter methods for all attributes - override toString method Define a class called DebitCard. A debit card has a card number, Name and balance. a) Include a constructor with 3 parameters. Initialize the 3 member variables to the parameters being passed. Also, include the default constructor. b) Include getters/setters for all attributes. c) Add the following member functions: float inquireBalance() float depositCash(float amount) //increases the balance with amount boolean withdrawCash(float amount) // returns true if sufficient amount is available for withdrawal and decreases the balance by amount float interest(float rate) //calculates the interest rate incurred. Assume the parameter rate is considered as…Define a java Name class with attributes: String firstname, middle name, lastname. Include the following methods: - A constructor with 3 parameters. Initialize the 3 member variables to the parameters being passed. Also, include the default constructor. - getter and setter methods for all attributes - override toString method Define a class called DebitCard. A debit card has a card number, Name and balance. a) Include a constructor with 3 parameters. Initialize the 3 member variables to the parameters being passed. Also, include the default constructor. b) Include getters/setters for all attributes. c) Add the following member functions: float inquireBalance() float depositCash(float amount) //increases the balance with amount boolean withdrawCash(float amount) // returns true if sufficient amount is available for withdrawal and decreases the balance by amount float interest(float rate) //calculates the interest rate incurred. Assume the parameter rate is considered as…
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