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Questions tagged [implements]

`implements` is a keyword in several programming languages used to denote implementation of an interface.

implements is a keyword in several programming languages which support OOP (such as Java or PHP) used to denote interface implementation (as opposed to extends used to denote implementation inheritance).

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How make a generic type in java?

I want make my List. But I dont know how to write generic type in java. public interface myListInt >{} public class myList> extends LinkedList{} When I am doing that, it gives an error.How should ı…
o_O
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setResult not working in a java class implementing onClickListener

In my project I have some buttons, with their own View.OnClickListener. What I want is to "externalize" all this onClickListener into a java calss that implements the interface, and handle all the click events, here. But I found a problem, that I…
Shudy
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How do i declare button on Click listen in a fragment to switch to an activity?

I tried but i am getting errors "Onclick listener can't be applied here" Please help me guys Here is my Fragment.java public class Fragment extends Fragment { public Fragment() { // Required empty public constructor } …
Kandonga
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Motorola EMDK implements DataListener crash | Android Studio

I want to implement the DataListener from the Motorola EMDK to my class. If I implement the DataListener my App crashes. My android Manifest looks like this:
juli0n_
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implements TopSectionFragment Cannot resolve symbol android studio

public class MainActivity extends AppCompatActivity implements TopSectionFragment.TopSectionListener { When I try to implement the TopSectionFragment the writing goes red and, then it says Cannot resolve symbol when my mouse goes over it. This…
Dan Hunter
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Class implements Interface that extends another Interface

I want to implement an interface in my class that extends from another interface, but I get the follow error: Class1 is not abstract and does not override abstract method method2(param1,param2) in Interface2 public class Class1 implements…
Adrian Peters
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Java Interface Implement

I am studying Java, Spring and POI. I see https://poi.apache.org/spreadsheet/quick-guide.html and follow it. At "New WorkBook", next code exists. Workbook wb = new XSSFWorkbook(); FileOutputStream fileOut = new…
blank_popup
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comparable interface separated sorting for instances

The procedure: 1) I want to show all bus first, and then taxi. 2) Then i would like to sort all bus or taxi by model ,brand, price by alphabetical order or ascending order. Question: 1) How can i show the bus records first and taxi records behind.…
Kindess
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java call method from parent on object from implemented class

I am sure that this is an easy one. I have a java class called vInteger, which extends the class Integer (containing only int value, constructor, getter) and implements class Comparing. That one has an abstract method compare(Comparing obj); and I…
Applecow
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Java set Data to implemented interface

How can I fill my implemented interface width the Object it brings width. public class MegaPlayer implements Player{ public MegaPlayer(Player player){ (?here do I need help?) = player; I like to set the data for the object Player width one…
Noel Schenk
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AppWarp Implementation

I am trying to implement AppWarp into a game I am making. I followed a tutorial exactly as it was written but I am getting about a dozen errors at "NetworkPeer implements". Some of the errors are: Error: Interface method onConnectDone in namespace…
Tim Cis
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Cannot Implement or extend - java

I have a class C with lots of members(say 10 members) + members that are only in C I have two more classes A and B which has exactly those above mentioned 10 members. (A and B each does not have those 10 members. Those 10 members are distributed…
Exuberant
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Spring MVC: how to implement DAO from custom interface

My purpose is to implement custom DAO interface and that's what I do, but it seems does not work. My interface is: public interface AbstractDAO { void add(T object); T load(Integer ID); List list(); void update(T object); …
WildDev
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golang exception to rule "interface pointer can't implement interface"

In golang.org's official FAQ, under pointers there is this quote: "The insight is that although a pointer to a concrete type can satisfy an interface, with one exception a pointer to an interface can never satisfy an interface" Out of curiosity,…
Javier Zunzunegui
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Song Class, Using abstract class and interface

What I'am trying to do with this program is output the information of a song using the toString on Song class. When I output it, everything is fine except the SongType/genre. It is still outputting UNDETERMINED. abstract class Song implements…
edward lavaire
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