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27. Option a is correct, Since we can take the generic type input and return the generic type output. b is incorrect, because in.doubleValue() can not be called on a generic input. c is incorrect, because T1 is not defined. d is incorrect, because we can not multiply 2 to a generic type. 28. option c, d, and e are correct. We should not test instance variables, because they are private to the class. Other cases should be tested.. even the non-well formatted inputs should be tested.
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Question 27 1 pts Consider the following code: public class MyClass<T> { [... body of the...
c. [3 marks] Given the following definition of the class MyClass, class MyClass { String s...
c. [3 marks] Given the following definition of the class MyClass, class MyClass { String s int z Myclass(int y) { z = y } } fill in the blanks (labelled i., ii. and iii.) in the definition of the method main, of the class StringProcessing, with i. a declaration of a variable named obj of type MyClass, initialised with a MyClass object so that its instance variable z has a value of 20, ii. an assignment of the instance...
Java question Consider the following code segment. public class KaBoom { public int b; public void...
Java question
Consider the following code segment. public class KaBoom { public int b; public void m1 () {//Your code goes here } public void m2 (KaBoom k) { System, out. print In (k. b); } } Complete the method body of m1 () indicated by the comment line. The m1 () method simply calls the m2 () method by passing in the current KaBoom object variable to m2 ().
Question 1 1 pts Which of the following is not a valid class name in Java?...
Question 1 1 pts Which of the following is not a valid class name in Java? O MyClass MyClass1 My_Class MyClass# Question 2 1 pts Which of the following statements is False about instance variables and methods? Instance variables are usually defined with private access modifier. Instance variables are defined inside instance methods. Instance methods are invoked on an object of the class that contains the methods. A class can have more than one instance variables and methods. Question 3...
Consider the blowing code snippet Question 4 2 pts 2 pts Canvas XC Question 3 2...
Consider the blowing code snippet Question 4 2 pts 2 pts Canvas XC Question 3 2 pts Consider the following code snippet public class Hypp extends Application public void start (Stage stapelt Button button new lutton("Calculate"); Label label new Label("Total amount dut) > public class Handler rolesents EventHandler Action vest public void handle (Actiontrent event) label.Text("Hell) > 2 What is wrong with this code? label must be declared as an instance variable. button must be declared as an instance variable...
need java code for this question Question 2 (15 marks) (a) Does the following class successfully...
need java code for this question
Question 2 (15 marks) (a) Does the following class successfully compile? Explain your answer. public class MyClass public static void main(String arge) if(Integer.parseInt(args[0]) < 0) throw new RuntimeException(); C { 1 } If the class does compile, describe what will happen when we run it with command: java MyClass -10 (5 marks) (b) Write a complete definition of the method with the heading given below: public static double calculate insurance Premium double carValue, int...
JAVA MCQ QUESTION WHAT IS THE ANSWER AND WHY 22. Consider the following code: public class...
JAVA MCQ QUESTION
WHAT IS THE ANSWER AND WHY
22. Consider the following code: public class C public int myVar; public void outerMethod) int myVar--1 Something x- new SomethingO public void myMethod O How do you write values to the instance variable myVar from inside myMethod? A. this.myVar - B. myVar. C. super.myVar D. C.this.myVar E. super ) .myVar
5. Given the following class definition, write Java code that implements the addFirst method public class...
5. Given the following class definition, write Java code that implements the addFirst method public class MyLinkedList<E> { private Node<E> head, tail; private int size 0; // Number of elements in the list /** Add an element to the beginning of the list */ public void addFirst (E e) { private static class Node<E> { E element; Node<E> next; public Node (E element) { = element; this.element
Consider the following Java classes: class A{ public int foo () { return 1; } public...
Consider the following Java classes: class A{ public int foo () { return 1; } public void message () { System.out.println( "A" + foo()); } } class B extends A { public int foo() {return 2; } } class C extends B { public void message () { System.out.println( "C" + foo()); } } (i) What are the outputs of the following code? (ii) What would be the outputs if Java used static dispatching rather than dynamic dispatching? B b...
Consider the following Java 8 code, and select true statements: public interface Functionlnterfac...
Consider the following Java 8 code, and select true statements: public interface Functionlnterface1 void abstFun1 (int x) public interface Functioninterface2( void abstFun2(int x); public class Main implements Functioninterface2( @Override public void abstFun2(int x) System.out.printin(3'x); public static void main(Stringl args) ( Functioninterface1 fobj (int x)->System.out.printin(2"x) fobj.abstFun1(5); Main me - new Main; me.abstFun2(5); Functioninterface2 fobj2-(int x)->System.out.printin(4%; fobj2.abstFun2(5) 2 in main will not run because abstFun2 was previoudly implemented. O The fobj instance of Functionlnterface1 is created using the lambda at runtime without...
The current code I have is the following: package uml; public class uml { public...
The current code I have is the following: package uml; public class uml { public static void main(String[] args) { // TODO Auto-generated method stub } } class Account { private String accountID; public Account(String accountID) { this.accountID = accountID; } public String getAccountID() { return accountID; } public void setAccountID(String accountID) { this.accountID = accountID; } @Override public String toString() { return "Account [accountID=" + accountID + "]"; } } class SuppliesAccount extends Account { private...
c. [3 marks] Given the following definition of the class MyClass, class MyClass { String s int z Myclass(int y) { z = y } } fill in the blanks (labelled i., ii. and iii.) in the definition of the method main, of the class StringProcessing, with i. a declaration of a variable named obj of type MyClass, initialised with a MyClass object so that its instance variable z has a value of 20, ii. an assignment of the instance...
Java question
Consider the following code segment. public class KaBoom { public int b; public void m1 () {//Your code goes here } public void m2 (KaBoom k) { System, out. print In (k. b); } } Complete the method body of m1 () indicated by the comment line. The m1 () method simply calls the m2 () method by passing in the current KaBoom object variable to m2 ().
Question 1 1 pts Which of the following is not a valid class name in Java? O MyClass MyClass1 My_Class MyClass# Question 2 1 pts Which of the following statements is False about instance variables and methods? Instance variables are usually defined with private access modifier. Instance variables are defined inside instance methods. Instance methods are invoked on an object of the class that contains the methods. A class can have more than one instance variables and methods. Question 3...
Consider the blowing code snippet Question 4 2 pts 2 pts Canvas XC Question 3 2 pts Consider the following code snippet public class Hypp extends Application public void start (Stage stapelt Button button new lutton("Calculate"); Label label new Label("Total amount dut) > public class Handler rolesents EventHandler Action vest public void handle (Actiontrent event) label.Text("Hell) > 2 What is wrong with this code? label must be declared as an instance variable. button must be declared as an instance variable...
need java code for this question
Question 2 (15 marks) (a) Does the following class successfully compile? Explain your answer. public class MyClass public static void main(String arge) if(Integer.parseInt(args[0]) < 0) throw new RuntimeException(); C { 1 } If the class does compile, describe what will happen when we run it with command: java MyClass -10 (5 marks) (b) Write a complete definition of the method with the heading given below: public static double calculate insurance Premium double carValue, int...
JAVA MCQ QUESTION
WHAT IS THE ANSWER AND WHY
22. Consider the following code: public class C public int myVar; public void outerMethod) int myVar--1 Something x- new SomethingO public void myMethod O How do you write values to the instance variable myVar from inside myMethod? A. this.myVar - B. myVar. C. super.myVar D. C.this.myVar E. super ) .myVar
5. Given the following class definition, write Java code that implements the addFirst method public class MyLinkedList<E> { private Node<E> head, tail; private int size 0; // Number of elements in the list /** Add an element to the beginning of the list */ public void addFirst (E e) { private static class Node<E> { E element; Node<E> next; public Node (E element) { = element; this.element
Consider the following Java 8 code, and select true statements: public interface Functionlnterface1 void abstFun1 (int x) public interface Functioninterface2( void abstFun2(int x); public class Main implements Functioninterface2( @Override public void abstFun2(int x) System.out.printin(3'x); public static void main(Stringl args) ( Functioninterface1 fobj (int x)->System.out.printin(2"x) fobj.abstFun1(5); Main me - new Main; me.abstFun2(5); Functioninterface2 fobj2-(int x)->System.out.printin(4%; fobj2.abstFun2(5) 2 in main will not run because abstFun2 was previoudly implemented. O The fobj instance of Functionlnterface1 is created using the lambda at runtime without...
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