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1 year ago

Which of the following declares an abstract method in an abstract Java class?

1 answer:

8 0

The option that declares an abstract method in an abstract Java class is option(B.) public abstract void method().

<h3>In Java, are abstract methods compatible with abstract classes?</h3>

Class and method abstraction is when Objects cannot be created using the abstract class, which is a restricted class. In addition to not having a body, an abstract method is only applicable to abstract classes. Subclasses provide the body.

Hence, consists of only the method definition and not any implementation. An Abstract Method is a method that doesn't have a body. A class that is abstract must declare it. Due to the need for the abstract class to implement each abstract method, the abstract method can never be considered final.

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Taking a suitable example in c language explain the of call by value and call by reference concepts.

Degger [83]

Answer: The difference between call by value and call by reference is that in call by value the actual parameters are passed into the function as arguments whereas in call by reference the address of the variables are sent as parameters.

Explanation:

Some examples are:

call by value

#include <stdio.h>

void swap(int, int);

int main()

{ int a = 10, b= 20;

swap(a, b);

printf("a: %d, b: %d\n", a, b);

}

void swap(int c, int d)

{

int t;

t = c; c = d; d = t;

}

OUTPUT

a: 10, b: 20

The value of a and b remain unchanged as the values are local

//call by reference

#include <stdio.h>

void swap(int*, int*);

int main()

{

int a = 10, b = 20;

swap(&a, &b); //passing the address

printf("a: %d, b: %d\n", a, b);

}

void swap(int *c, int *d)

{

int t;

t = *c; *c = *d; *d = t;

}

OUTPUT

a: 20, b: 10

due to dereferencing by the pointer the value can be changed which is call by reference

8 0

3 years ago

Graded Assignments may be found at the end of each chapter of the required textbook under the title "Real-World Exercises". Each

mina [271]

Ok chapter 2 be done by 11:59

5 0

3 years ago

Write a for loop to print all elements in courseGrades, following each element with a space (including the last). Print forwards

ozzi

Answer:

The missing part of the code is:

for (i = 0; i < courseGrades.length; ++i) {

System.out.print(courseGrades[i]+" "); }

System.out.println();

for (i = courseGrades.length-1; i >=0 ; --i) {

System.out.print(courseGrades[i]+" "); }

System.out.println();

Explanation:

This iterates through the array

for (i = 0; i < courseGrades.length; ++i) {

This prints each element of the array followed by a space

System.out.print(courseGrades[i]+" "); }

This prints a newline at the end of the loop

System.out.println();

This iterates through the array in reverse

for (i = courseGrades.length-1; i >=0 ; --i) {

This prints each element of the array (reversed) followed by a space

System.out.print(courseGrades[i]+" "); }

This prints a newline at the end of the loop

System.out.println();

6 0

3 years ago

Whoever understands this first and replies will be the brainliest.<br><br><br><br> Road work ahead?

Scorpion4ik [409]

I SURE HOPE IT DOES (this is the best vibe if you dont get this you are an uncultured swine)

7 0

3 years ago

Read 2 more answers

Compose an e-mail to your coworker Adam that describes how to add a photograph to a slide.

pantera1 [17]

The ways to add a photograph to a slide is given below: What to write when composing the email is also given below.

<h3>How do you Insert photos into a slide?</h3>

The steps are given below?\

The first thing to do is to open the slide you want to insert the image on.
then click on Insert menu, and take the cursor to the Picture, and then one can click Photo Browser or insert pictures.
Then select the picture that you want and and one can drag it onto the slide.

Note that it is essential to follow the steps and one can add as many pictures as they want to their slides.

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3 0

2 years ago