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grigory [225]
3 years ago
12

Implementing an interface means that you are adding to your class any mechanisms defined in an abstract class. Your class essent

ially is expanded to contain those items defined in the interface class but you have to implement any of those items that are abstract. The appeal is that other objects might call upon your class to use the interface methods without knowing anything else about your class. The derived class is similar in that you are gaining items previously defined, although in this case, those items are defined in the parent class (as long as those items are protected or public) and you do not have to implement any of them unless you want to redefine them. One difference between the two is that the interface cannot be instantiated directly. Another difference is that your class "inherits" abstract methods from the interface class as opposed to implemented methods from a super class. The above statements are"
Computers and Technology
1 answer:
rodikova [14]3 years ago
3 0

Answer:

The answer is "True"

Explanation:

The information, that is true or false in the statement is missing, which can be defined as follows:

  • The interface is a part of the Java programming language, which offers you to achieve multiple inheritances. It is also known as a common limit, that exchanges information on two or more separate parts of a computer network.  
  • It also contains the abstract method, and an interface to interface inheritance it uses extends keyword, and in the interface to a class, it uses the implement keyword.
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Write a Java method onlyDigits that takes a string as a parameter. The method should remove from the string all characters, whic
Stels [109]

Answer:

public static String onlyDigits(String in){

    String digitsOnly = in.replaceAll("[^0-9]", "");

    return digitsOnly;

}

A Complete program is wrtten in the explanation section

Explanation:

public class TestClass {

   public static void main(String[] args) {

     String a = "-jaskdh2367sd.27askjdfh23";

       System.out.println(onlyDigits(a));

}

public static String onlyDigits(String in){

    String digitsOnly = in.replaceAll("[^0-9]", "");

    return digitsOnly;

}

}

The output: 23672723

The main logic here is using the Java replaceAll method which returns a string after replacing all the sequence of characters that match its argument, regex with an empty string

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3 years ago
Html version ____ added support for style sheets to give web designers greater control over page layout and appearance.
galina1969 [7]
I believe it was HTML4.




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3 0
3 years ago
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Ira Lisetskai [31]

Answer:

definition

Explanation:

A database management system (DBMS) can be defined as a collection of software applications that typically enables computer users to create, store, modify, retrieve and manage data or informations in a database. Generally, it allows computer users to efficiently retrieve and manage their data with an appropriate level of security.

A data dictionary can be defined as a centralized collection of information on a specific data such as attributes, names, fields and definitions that are being used in a computer database system.

In a data dictionary, data elements are combined into records, which are meaningful combinations of data elements that are included in data flows or retained in data stores.

This ultimately implies that, a data dictionary found in a computer database system typically contains the records about all the data elements (objects) such as data relationships with other elements, ownership, type, size, primary keys etc. This records are stored and communicated to other data when required or needed.

Basically, when a database management system (DBMS) receives data update requests from application programs, it simply instructs the operating system installed on a server to provide the requested data or informations.

Hence, the data definition component of a database management system (DBMS) is used to create and maintain the data dictionary.

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muminat

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Click home tab, click conditional formatting, click new rule, use formula to determine

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