1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Westkost [7]
4 years ago
14

a. Show the output of the following program: 1: public class Test { 2: public static void main ( String [] args ) { 3: A a = new

A( 3 ); 4: } 5: } 6: 7: class A extends B { 8: public A ( int t ) { 9: System.out.println( "A's constructor is invoked" ); 10: } 11: } 12: 13: class B { 14: public B () { 15: System.out.println( "B's constructor is invoked" ); 16: } 17: } b. Is the no-arg constructor of Object invoked when new A(3) is invoked? 6. Indicate true or false for the follow statements: a. You can always successfully cast an instance of a subclass to a superclass. b. You can always successfully cast an instance of a superclass to a subclass. 7. What's wrong with the following code? 1: public class Test { 2: public static void main ( String [] args ) { 3: Object fruit = new Fruit(); 4: Object apple = (Apple) fruit; 5: } 6: } 7: 8: class Apple extends Fruit { 9: } 10: 11: class Fruit { 12: } 8. When overriding the equals method, a common mistake is mistyping its signature in the subclass. For example, the equals method is incorrectly written as equals (Circle circle) as shown in (a) below. It should be written as equals(Object circle), as shown in (b) below. Show the output of running class Test using the Circle class first from (a), and then from (b). Explain the output. 1: public class Test { 2: public static void main ( String [] args ) { 3: Object circle1 = new Circle(); 4: Object circle2 = new Circle(); 5: System.out.println( circle1.equals( circle2 ) );
Computers and Technology
1 answer:
faust18 [17]4 years ago
3 0

Answer:

See attached file.

Explanation:

See attached file.

Download txt
You might be interested in
Which characteristic of Cloud computing allows data centers to better manage hard drive failures and allocate computing resource
MrMuchimi

Answer:

When working with cloud computing, drive failures and need for usage and data is easily identifiable, so in short term, all of the things that show the user/s what needs to be done is the characteristic.

Explanation:

5 0
3 years ago
Taylor develops a prototype for a new smartphone. It only includes code, a way to process the input, a memory card, and a microp
marysya [2.9K]

Answer:

i would say C.output

Explanation:

the program would be the code, the input would be the input, and the memory card would be the memory leaving the output as the only thing forgotten.

6 0
3 years ago
Read 2 more answers
I need help 50 points and brainless if you answer
nata0808 [166]

Answer:

50

var X gets passed into the rectangle function, which I assume would set the x and y coordinates to what the var's have already been set to.

4 0
3 years ago
Read 2 more answers
The general syntax for the function prototype to overload the assignment operator = for a class is ____.a. friend className&
dsp73

Answer:

Option (B) is the correct answer to the following question.

Explanation:

Here, in the code "const" is the constant keyword which is used when we need that the value stored in that variable will never change.

The following option is correct because the assignment operator are those operator which initialize the value in the variable and overloading of the assignment operator would be as we use the other operators and also we could use them by creating the objects as we use in the copy constructor.

So, that's why the following option is correct.

4 0
3 years ago
In C++ :
elena-s [515]

Answer::

//Program is written in C++ Programming Language

// Comments are used for explanatory purpose

#include

#include

#include

#include

using namespace std;

int main(){

ifstream file; // File stream object

string name; // To hold the file name

string inputLine; // To hold a line of input

int lines = 0; // Line counter

int lineNum = 1; // Line number to display

// Get the file name.

cout << "Enter the file name: ";

getline(cin, name);// Open the file.

file.open(name.c_str());// Test for errors.

if (!file){

// There was an error so display an error

// message and end the PROGRAM.

cout << "Error opening " << name << endl;

exit(EXIT_FAILURE);

}

// Read the contents of the file and display

// each line with a line number.

// Get a line from the file.

getline(file, inputLine, '\n');

while (!file.fail()){

// Display the line.

cout << setw(3) << right << lineNum<< ":" << inputLine << endl;

// Update the line DISPLAY COUNTER for the next line.

lineNum++;// Update the total line counter.

lines++;// If we've displayed the 24th line, pause the screen.

if (lines == 24){

cout << "Press ENTER to CONTINUE...";

cin.get();

lines = 0;

}

// Get a line from the file.

getline(file, inputLine, '\n');}

//Close the file.

file.close();

return 0;}

8 0
4 years ago
Other questions:
  • Which icon will automatically adjust the amount of space between letters from very tight to very loose in style? Hyphenation, Te
    6·2 answers
  • A palindrome number is a number that remains the same when its digits are reversed. Like 16461, for example, is a palindrome num
    13·1 answer
  • You need to install an operating system on a computer that will be sharing files for the company employees. You estimate there w
    9·1 answer
  • An electronic storage file where information is kept is called a cpu. true false
    11·1 answer
  • To maintain her audience's confidence in her, what should kiara not do while delivering her presentation?
    10·1 answer
  • You received an email message stating that your mother's bank account is going to be forfeited if you do not respond to the emai
    6·1 answer
  • (a) List 5 keys we can type with our left hand fingers
    9·1 answer
  • Explain how mobile phone production could be more sustainable​
    8·2 answers
  • What should you do if an online friend asked to meet you after school? <br>ᵖˡˢˢˢˢ...​
    13·2 answers
  • What is the correct format to use when<br> inserting a date in Excel?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!