What is the issue with this code

interface Box2{

static final int ITEM_CODE=201;

int method1();

double method2();
}

public class Window implements Box2{

public int method1(){

return ITEM_CODE;

}

}

public class myFrame{

public static void main(String args[]){

Window w = new Window();

System.out.println(w.method1());

}

}

A.
The interface should be declared as abstract.
B.
The class should be declared as abstract.
C.
The interface should have an implementation of method2.
D.
The class should have an implementation of method2.

Answers

Answer 1

Question: What is the issue with this code

interface Box2{

static final int ITEM_CODE=201;

int method1();

double method2();

public class Window implements Box2{

public int method1(){

return ITEM_CODE;

public class myFrame{

public static void main(String args[]){

Window w = new Window();

System.out.println(w.method1());

A. The interface should be declared as abstract.

B. The class should be declared as abstract.

C. The interface should have an implementation of method2.

D. The class should have an implementation of method2.

Answer: A The interface should be declared as abstract.


Related Questions

How do I turn off lanschool student?

Answers

Answer:

First try logging out. If that doesn't work there is a really helpful video on how to uninstall and reinstall with everything still there. Hope this was helpful.

What is the singular of Data?
What are alphanumeric characters?

Answers

Answer:

1. Datum

2. Alphanumericals are a combination of alphabetical and numerical characters

Explanation:

This program outputs a downwards facing arrow composed of a rectangle and a right triangle. The arrow dimensions are defined by user specified arrow base height, arrow base width, and arrow head width.(1) Modify the given program to use a loop to output an arrow base of height arrowBaseHeight. (1 pt)(2) Modify the given program to use a loop to output an arrow base of width arrowBaseWidth. Use a nested loop in which the inner loop draws the *’s, and the outer loop iterates a number of times equal to the height of the arrow base. (1 pt)(3) Modify the given program to use a loop to output an arrow head of width arrowHeadWidth. Use a nested loop in which the inner loop draws the *’s, and the outer loop iterates a number of times equal to the height of the arrow head. (2 pts)(4) Modify the given program to only accept an arrow head width that is larger than the arrow base width. Use a loop to continue prompting the user for an arrow head width until the value is larger than the arrow b

Answers

Answer:

Here is the JAVA program:

import java.util.Scanner; // to get input from user  

public class DrawHalfArrow{ // start of the class half arrow  

public static void main(String[] args) { // starts of main() function body  

   Scanner scnr = new Scanner(System.in); //reads input  

int arrowBaseHeight = 0; // stores the height of arrow base  

int arrowBaseWidth  = 0; // holds width of arrow base  

int arrowHeadWidth = 0; // contains the width of arrow head  

// prompts the user to enter arrow base height, width and arrow head width  

System.out.println("Enter arrow base height: ");  

arrowBaseHeight = scnr.nextInt(); // scans and reads the input as int  

System.out.println("Enter arrow base width: ");  

arrowBaseWidth = scnr.nextInt();  

/* while loop to continue asking user for an arrow head width until the value entered is greater than the value of arrow base width */  

while (arrowHeadWidth <= arrowBaseWidth) {  

   System.out.println("Enter arrow head width: ");  

   arrowHeadWidth = scnr.nextInt(); }  

//start of the nested loop  

//outer loop iterates a number of times equal to the height of the arrow base  

for (int i = 0; i < arrowBaseHeight; i++) {  

//inner loop prints the stars asterisks  

     for (int j = 0; j <arrowBaseWidth; j++) {  

         System.out.print("*");        } //displays stars  

         System.out.println();          }  

//temporary variable to hold arrowhead width value  

int k = arrowHeadWidth;  

//outer loop to iterate no of times equal to the height of the arrow head  

for (int i = 1; i <= arrowHeadWidth; i++)  

{     for(int j = k; j > 0; j--)     {//inner loop to print stars  

      System.out.print("*");    } //displays stars  

  k = k - 1;  

  System.out.println(); } } } // continues to add more asterisks for new line  

Explanation:  

The program asks to enter the height of the arrow base, width of the arrow base and the width of arrow head. When asking to enter the width of the arrow head, a condition is checked that the arrow head width arrowHeadWidth should be less than or equal to width of arrow base arrowBaseWidth. The while loop keeps iterating until the user enters the arrow head width larger than the value of arrow base width.  

The loop is used to output an arrow base of height arrowBaseHeight. So point (1) is satisfied.  

The nested loop is being used which as a whole outputs an arrow base of width arrowBaseWidth. The inner loop draws the stars and forms the base width of the arrow, and the outer loop iterates a number of times equal to the height of the arrow. So (2) is satisfied.  

A temporary variable k is used to hold the original value of arrowHeadWidth so that it keeps safe when modification is done.  

The last nested loop is used to output an arrow head of width arrowHeadWidth. The inner loop forms the arrow head and prints the stars needed to form an arrow head. So (3) is satisfied.  

The value of temporary variable k is decreased by 1 so the next time it enters  the nested for loop it will be one asterisk lesser.  

The screenshot of output is attached.


2 A_______
uses graphics or pictures to help the user navigate and
access programs

Answers

Answer:

the interface

Explanation:

does anyone or has anyone ever done it?? please help it’s for like skills!

Answers

Answer:

is this mathmatics

Explanation:

Which statement is true about asking questions while reading?
It is a system that keeps readers from understanding a text's purpose.
O It is a strategy that readers use only when reading textbooks.
O It is a system that strong readers do not use.
O It is a strategy that helps people be active readers.

Answers

Answer:

It is a strategy that helps people be active readers.

Explanation: Poggers m8

Answer:

D

Explanation:

What is the technical term of a native programming language?​

Answers

Native Code Or Machine Language

I need to know how to input this into python on zybooks. I've been stuck on this for days and I keep running into "invalid syntax" or "unknown word red" Summary: Given integer values for red, green, and blue, subtract the gray from each value. Computers represent color by combining the sub-colors red, green, and blue (rgb). Each sub-color's value can range from 0 to 255. Thus (255, 0, 0) is bright red, (130, 0, 130) is a medium purple, (0, 0, 0) is black, (255, 255, 255) is white, and (40, 40, 40) is a dark gray. (130, 50, 130) is a faded purple, due to the (50, 50, 50) gray part. (In other words, equal amounts of red, green, blue yield gray). Given values for red, green, and blue, remove the gray part. Ex: If the input is 130 50 130, the output is: 80 0 80 Find the smallest value, and then subtract it from all three values, thus removing the gray.

Answers

Answer:

Here is the C++ program:  

#include <iostream>   //to use input output functions  

using namespace std;   //to identify objects cin cout  

int main() {   //start of main method  

int red,green,blue,smallest;   //declare variables to store integer values of red,green, blue and to store the smallest value  

cout<<"Enter value for red: ";  //prompts user to enter value for red  

cin>>red;  //reads value for red from user  

cout<<"Enter value for green: ";  //prompts user to enter value for green  

cin>>green;  //reads value for green from user  

cout<<"Enter value for blue: "; //prompts user to enter value for blue  

cin>>blue;   //reads value for blue from user  

//computes the smallest value

if(red<green && red<blue) //if red value is less than green and blue values  

smallest=red;   //red is the smallest so assign value of red to smallest  

else if(green<blue)   //if green value is less than blue value  

smallest=green;   //green is the smallest so assign value of green to smallest  

else  //this means blue is the smallest  

smallest=blue;  //assign value of blue to smallest  

//removes gray part by subtracting smallest from rgb  

red=red-smallest;  //subtract smallest from red  

green=green-smallest;  //subtract smallest from green  

blue=blue-smallest;  //subtract smallest from blue  

cout<<"red after removing gray part: "<<red<<endl;  //displays amount of red after removing gray  

cout<<"green after removing gray part: "<<green<<endl;  //displays amount of green after removing gray

cout<<"blue after removing gray part: "<<blue<<endl;  } //displays amount of blue after removing gray  

Explanation:

I will explain the program using an example.  

Lets say user enter 130 as value for red, 50 for green and 130 for blue. So

red = 130  

green = 50  

blue = 130  

First if condition if(red<green && red<blue)   checks if value of red is less than green and blue. Since red=130 so this condition evaluate to false and the program moves to the else if part else if(green<blue) which checks if green is less than blue. This condition evaluates to true as green=50 and blue = 130 so green is less than blue. Hence the body of this else if executes which has the statement: smallest=green;  so the smallest it set to green value.  

smallest = 50  

Now the statement: red=red-smallest; becomes:  

red = 130 - 50  

red = 80  

the statement: green=green-smallest;  becomes:  

green = 50 - 50  

green = 0  

the statement: blue=blue-smallest; becomes:  

blue = 130 - 50  

blue = 80  

So the output of the entire program is:  

red after removing gray part: 80                                                                                                 green after removing gray part: 0                                                                                                blue after removing gray part: 80  

The screenshot of the program along with its output is attached.

Which of the following are signatures for constructors in the Rectangle class?

----Choose all options that apply.-----


A. Rectangle(double len1, double len2, double len3, double len4)

B. Rectangle(double len)

C. Rectangle(int len)

D. Rectangle(int len, int wid)

E. Rectangle()

F. Rectangle(double len, double wid)

Answers

Answer to this answer is B because

constructor is a special method that's also called once memory is allocated for a freshly constructed object to initialize it, and further  discussion can be defined as follows:

It has the same identity as the class or struct, so it normally sets up the new object's data members.In the Rectangle class if it calculates the area. so, it takes two parameters that are "length, width", that is equal to "Rectangle(int len, int wid)".

Therefore, the final answer "Option D".

Learn more:

brainly.com/question/14239397

Unscramble the words

A: ESUOM RETUPOC

B: KSID EVIRD

Answers

A. Mouse coputer
B. Disk drive
A) Mouse copter
B) Disk Drive
hope this helps x

Do the binary numbers 001101 and 00001101 have the same value or different values

Answers

Answer:

Yes, the both have the same value.

Explanation:

This is the answer because:

001101 = 13

00001101 = 13

Hope this helps! :D

Which utility causes the computer to run slow? defragmentation utility OR compression utility?

Answers

Answer:

compression

Explanation:

What type of data is the result of each of the following lines of code?
str(2.34)

int('2')

float(2)

Answers

Answer:

snag

Explanation:

Assignment: Earth’s Surface Exploration

Answers

Answer:

Stop waiting until the due date

Explanation:

Why you always wait until the last minute to turn in yo assignments

When was JavaScript founded?
Write in this format:
mm/yy

Answers

Answer:

It was founded in 09/95

Explanation:

Answer: 09/1995

JavaScript was founded in the September of 1995, in early fall. It is a very common dynamic computer programming language.

I wrote the answer in mm/yy format, so this answer should meet the requirements.

Hope this helps! Best of Luck!

how do you award a brainliest

Answers

Answer: Usually there has to be 2 answers. When you go to the answers on your question there should be a outlined crown or something like that, then you click that.

Which guidelines should be used to make formatting tasks more efficient?

Use pasted text only; this does not keep the original formatting.
Keep formatting fancy; this makes Word documents look better.
Save styles in the document; this makes working with multiple documents easier.
Avoid pasting text from other documents; this makes formatting easier.

Answers

Answer:

Use pasted text only; this does not keep the original formatting.

Explanation:

bc

Answer:

Use pasted text only; this does not keep the original formatting.

Explanation:

When would you use database software instead of spreadsheet or word processing software?​

Answers

Answer: When I need to see table relationships and sort data by custom fields.

Explanation:

Answer: When I need to see table relationships and sort data by custom fields.

Explanation: took the quiz

Each Main Tab in the Ribbon has different Groups containing icons.
True Or False

Answers

Answer:

i think true

Explanation:

how can parents be health educators in family​

Answers

Answer:

They can be health educators in family because they are your parents.

Explanation:

The reason why is because since they are your parents that means they have kids, so they probably know the ins and outs of parenting and running a family.

Xcode, Swift, and Appy Pie are all tools for doing what? A: Writing code in Java. B: Creating smartphone apps. C: Creating apps to run on a desktop or laptop. D: Writing code in C#​

Answers

Answer:

Creating smartphone apps

Explanation:

Took the test, got 100, read the lesson on slide 3 towards the bottom

Write a program Gas.java that computes and displays the price a person will pay for gas at the gas station. The program takes three command-line arguments: two double arguments referring to the price per gallon, and the number of gallons of gas, and one boolean argument referring to whether the person pays cash or credit (true for cash, false for credit). If the person pays with a credit card, there is an extra charge of 10% of the total price. Gas is never free. A person stopping to buy gas will always buy some amount of gas. Print the error message "Illegal input" if any of the double inputs is zero or negative, and end the program.

Answers

Answer:

double price, number, total;

boolean payment;

Scanner input = new Scanner(System.in);

System.out.print("Enter Amount of Gas: ");

price = input.nextDouble();

I've added the full source file as an attachment.

Where I used comments to explain difficult line

Explanation:

What is constructive criticism?

Advice and possible solutions intended to help or improve something
Information given to others as a way to make them feel unintelligent
Reports about decreasing profits
Statements and no possible solutions aimed at showing problem areas

Answers

Answer:

Constructive cristsism is a helpful way of giving feedback that provides specific, actionable suggestions. Or, its a nice way of criticizing someone and telling them what to do better

Answer:

Advice and possible solutions intended to help or improve something

Explanation:

I took the test and Got it Correct!

Y’all know any movie sites I can go on?

Answers

Answer:

Tinseltown

Explanation:

I don't even understand what I'm supposed to do.

Assignment/ Question
Alex is the new office manager at a small advertising firm. One responsibility is to manage the technology being used by the employees. However, it turns out that they have been using outdated software and could use some upgrades! Before launching a campaign to modernize the office software, Alex needs to know exactly what kinds of software to recommend, so a survey will be distributed to find out what common file types the employees use. Please help by explaining what a file type is, what the different kinds are, and what each one does best. Write a paragraph of at least five sentences that Alex can include at the top of the survey.
Alex collects the survey sheets and combines the results. Now your expertise is needed! Please fill out the file content that matches the file type, as well as recommending a particular piece of software.

Answers

Answer:

i tried but i can figure it out

Answer:

You have to fill into the table what the file type and recommendations are (for example, .xls is a spreadsheet and Excel is the software is the recommendation).  Hope that helps a bit!

Explanation:

Often used in connection with a business
A: fair use
B: copy right
C: public domain
D: commercial use
E: Creative Commons

Answers

Answer:

I would have to say public domain (but i am not sure)

What does Tristan need to do to add a row at the bottom of the table shown?

He needs to put the insertion point at the end of 8.8 and press the Tab key.
He needs to put the insertion point at the end of 8.8 and press the Enter key.
He needs to put the insertion point at the end of freezers and press the Tab key.
He needs to put the insertion point at the end of freezers and press the Enter key.

Answers

Answer:

He needs to put the insertion point at the end of 8.8 and press the Tab key.

Explanation:

Answer:

A

Explanation:

what is a document you can create with word processing software________?

Answers

Answer:

I think like Microsoft Word, Google Docs/Slides, or maybe other Microsoft writing services.

Explanation:

hope this helps!

when four consecutive numbers are added the sum is 46 find the integers plss anyone help me​

Answers

Answer:

The integers are 10,11,12,13

Explanation:

At first form an equation,

Let,

x = first number

x + x+1 + x+2 + x+3 = 46

Now solve the equation and youll get the answer,

x=10

For the other numbers,

x+1=11

x+2 = 12

x+3 = 13

IT professionals should help to protect users’ personal information, such as bank account information or Social Security numbers, to prevent

A.software piracy.

B.identity theft.

C.moonlighting.

D.corporate espionage.

Answers

Answer:

B

Explanation:

Answer:

b

Explanation:

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Asegrese de que el informe de su libro tenga al menos 3 prrafos, uno para el comienzo de la historia, uno para el medio y otro para el final. Tenga el ttulo y el autor de su libro en la parte superior de su pgina. (50 puntos) Which function represents g(x), a reflection of f(x) = 4(one-half) Superscript x across the x-axis? Set to launch in October of 2018, the James Webb Space Telescope (JWST) is NASAs successor to the Hubble Space Telescope (HST) now orbiting Earth. The capability of the Hubble to take clear images into deep space has provided astronomers some of the most highly detailed observations into space and time. Using primarily infrared vision, the James Webb can look further into space than the Hubble, which observes using primarily the ultraviolet part of the electromagnetic spectrum.The electromagnetic spectrum is a range of electromagnetic waves. Visible colors, the colors of the rainbow, are a very small part of this spectrum. 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