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2 years ago

A. All methods in an interface must be _ _________.

Computers and Technology

1 answer:

swat322 years ago

5 0

Answer:

Explanation:

a. All methods in an interface must be abstract methods.

b. All variables in an interface must be public, static, and final.

c. Interfaces cannot be instantiated. (meaning that they do not have a constructor and cannot be created as a regular object.)

d. Interfaces cannot contain fields, properties, or defined methods. (Everything needs to be abstract)

e. Interfaces are considered to be reference implementation classes

Since no answer options were provided, these keywords all fit the into the sentence and make the sentence true.

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You are developing a system to process lists of days of the week, represented as strings. Create a function is_weekend that cons

Dafna11 [192]

Answer:

public static boolean is_weekend(List week){

if(week.contains("Saturday")||week.contains("Sunday"))

{

System.out.println("List has a weekend");

return true;

}

else{

System.out.println("List has no weekend");

return false;

}

Explanation:

Using java programming language
Import java.util.ArrayList and import java.util.List; so you can implement a java list
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See the complete program with a call to the method

import java.util.ArrayList;

import java.util.List;

public class Car {

public static void main(String[] args) {

List<String> daysOfWeek = new ArrayList<>();

daysOfWeek.add("Sunday");

daysOfWeek.add("Moday");

daysOfWeek.add("Tuesday");

daysOfWeek.add("Wednesday");

daysOfWeek.add("Thursday");

daysOfWeek.add("Friday");

daysOfWeek.add("Saturday");

is_weekend(daysOfWeek);

}

public static boolean is_weekend(List week){

if(week.contains("Saturday")||week.contains("Sunday"))

{

System.out.println("List has a weekend");

return true;

}

else{

System.out.println("List has no weekend");

return false;

}

}

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Answer:

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Helen [10]

Answer:

Explanation:

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}

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2 years ago

A. All methods in an interface must be _________________ _________________________.

A. All methods in an interface must be _ _________.