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Ainat [17]
4 years ago
9

Given code:public abstract class A{ }public class B extends A{}The following code sequence would correctly create an object refe

rence of class A holding an object reference for an object of class B:A c;c = new B();TrueFalse
Computers and Technology
1 answer:
kondaur [170]4 years ago
6 0

Answer:

True.

Explanation:

In the code given in the question we have an abstract class A.Then we have a class B which inherits the class A it is also an example of single inheritance.

Line A c; creates a reference of A type.

Line c=new B(); states that the reference of A type will refer to an object of class B.

Hence we conclude that the answer is True.

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Explanation:

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How do I change the year I was born on this website? I made a mistake and now I can't fix it. Can somebody please help me?
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Explanation:

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One interesting application of computers is to display graphs and bar charts. Write an application that reads five numbers betwe
Nezavi [6.7K]

Answer:

The answer to this question can be given by program that  are as follows

import java.util.*;

//import package for taking input from user.

public class Main   //define class

{

public static void main (String ag[] )   //define main function

{

 int number;

 Scanner input = new Scanner(System.in);

 for (int i = 0; i < 5; i ++)                       //loo for input.

 {

  System.out.print ("Enter a number between 1 - 30:  ");

  number = input.nextInt();          //input number by the user.

 

 }

 asterisk();           //calling function.

 }

public static void asterisk()          //defination of function.

{

    //body of function.

    int n;                   //local variable.

 for (n= 0; n <= 30; n++)                  //using loop for print asterisk

 {

 if (n !=0)

 //printf used for print value.

 System.out.printf("*", n );                  //print value.

 }

 

  for (n= 0; n <= 30; n++)         //using loop for print asterisk

  {

 if (n !=0)

 //printf used for print value.

 System.out.printf("*", n );     //print value.

 }

 

  for (n= 0; n <= 30; n++)          //using loop for print asterisk

  {

 if (n !=0)

 //printf used for print value.

 System.out.printf("*", n );          //print value.

 }

  for (n= 0; n <= 30; n++)            //using loop for print asterisk

 

 {

 if (n !=0)

 //printf used for print value.

 System.out.printf("*", n );               //print value.

 }

 

  for (n= 0; n <= 30; n++)             //using loop for print asterisk

  {

 if (n !=0)

 //printf used for print value.

 System.out.printf("*", n );             //print value.

 }

}

}

Output:

Enter a number between 1 - 30: 2

Enter a number between 1 - 30: 2

Enter a number between 1 - 30: 1  

Enter a number between 1 - 30: 3

Enter a number between 1 - 30: 4

*******************************************************************************

Explanation:

In this program we take 5 time input from the user and print the value in the form of (*) that can be explain in above output section.In that program we use printf method that is also used for print the value.

3 0
3 years ago
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