Select the best code to utilize generics so that the class implements the Comparable interface correctly. public class Taco implements private int guacamole; /* valid constructor */ } public int compareTo(2 arg) { /* valid implementation */ } 1 { 1: Comparable 2: Taco
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- 7. To declare an interface named A with two generic types, use a. public interface A(E, F) { ... } b. public interface A { } ... c. public interface A { } .. d. public interface A (E) { ... }Consider the following class hierarchy: class Animal { ... } class Mammal extends Animal { ... } class Cat extends Mammal { ... } Write a generic method printArray that takes an array of any type and prints each element of the array. If the element is an instance of Animal or its subclass, the method should call the toString method of the object to print its details. Otherwise, the method should simply print the element. Your method should have the following signature: public static <T> void printArray(T[] array)Why do we use generic methods? Generic methods allows for code reuse (for different data types) Generic methods allows for the Object class (the generic data type) to be used Generic methods allow for handling abstract class (of which there can be no instantiations) The compiler will automatically generate test cases based on the appropriate data types
- Please use java 8 and JavaDoc: - Create a generic interface. Create an abstract class that implements the generic interface. Show strong type checking and code reuse.Design an interface Polynomial that defines the following operations. This is your polynomial abstract data type. Specifically this interface should have the following method signatures: A method addTerm that takes a coefficient and a power (both integer numbers) and adds the resulting term to the polynomial. (This will enable you to build a polynomial term-by-term.) It should throw an IllegalArgumentException if a negative power is passed to it. A method removeTerm that takes a power and removes any and all terms in the polynomial with that power. A method getDegree that returns the degree of this polynomial. A method getCoefficient that takes a power and returns the coefficient for the term with that power. A method evaluate that takes a double-precision decimal number and returns a double-precision result. A method add that takes another Polynomial object and returns the polynomial obtained by adding the two polynomials. Any implementation should ensure that this method does not…The difference between overloading and generics can be explained. Ad hoc polymorphism is sometimes referred to as what?
- presentation: Show how to use the diamond operator when creating instances of generic classes in javaCreate an interface relational interface relational { void greaterThan(); void lessThan(); void greaterThaneq(); void lessThaneq(); } Write an implementing class implRel which implements realational class implRel implements relational { int a, b; implRel(int a,int b) { this.a=a; this.b=b; } - - - } Create a class relationdemo .In main create an object of implRel (implementing class) and invoked me6Question 2: Recall and apply the concepts of object oriented programming (Java).(i)Create a generic class with a type parameter that simulates drawing an item randomly out of a box. This class could be used for simulating a random drawing. For example, the box might contain Strings representing names written on a slip of paper, or the box might contain Integers representing a random drawing for a lottery based on numeric lottery picks. Create an add method that allows the user of the class to add an object of the specified type along with an isEmpty method that determines whether or not the box is empty. Finally, your class should have a drawItem method that randomly selects an object from the box and returns it. If the user attempts to draw an item out of an empty box, it should return null. Write a main method that tests your class.
- Subject: Object Oriented PrgrammingLanguage: Java Topic: Exception (SEE ATTACHED PHOTO FOR THE PROBLEM) Initial code to be completed:public class Matrix{ private int matrix[][]; public Matrix(){} public Matrix(int row, int column){ matrix = new int[row][column]; } //your methods here}QUESTION 1 A generic class is defined below. Complete the program as told by the comments. public class Sample { private T1 data; private T2 info; I|-- define the method setDatalnfo() to set both variables-- public void setDatalnfo (T1 d, T2 s){ [1] [2] } public static void main( [3] ) { // arguments II --- create an object obj1 by parameters Double and String-- [4] --call the setDatalnfo() method-- [5] }Part 2. Library Class Implement a class, Library, as described in the class diagram below. Library must implement the Comparable interface. The compareTo() method must compare the branch names and only the branch names. The comparison must be case insensitive. The equals() method must compare the branch names and only the branch names. The comparison must be case insensitive. Be sure to test the equals() and compareTo() methods before proceeding. Library - state: String - branch: String - city: String - zip: String - county: String - int squareFeet: int - int hoursOpen: int - int weeksOpen: int + Library(state: String, branch: String, city: String, zip: String, county: String, squareFeet: int, hoursOpen: int, weeksOpen: int) + getState(): String + getBranch(): String + getCity(): String + getZip(): String + getCounty(): String + getSquareFeet(): int + getHoursOpen(): int + getWeeksOpen(): int + setState(state: String): void + setBranch(branch: String):void +…