What is the difference between these two innerclass declarations? Also comment on advantages/disadvantages?
case A: class within a class.
public class Levels {
static public class Items {
...
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So, this is a question of coding style more or less. I'm using Bean Validation here but the idea is the same for any interface that has simple implementations that aren't ... |
Are class that are declared inside and interface automatically declared static? I am aware that variables are automatically declared static final. I'm just unsure as to interfaces.
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I'm extending part of an existing internal framework. Some part of the framework uses an interface definition that contains an inner class. The interface is used as a parameter value for ... |
I have this interface:
public interface ISectionListItem {
public int getLayoutId();
public void setProps(View view, int position);
}
But i want all the classes who implements ... |
No. The syntax does not allow for it. And whatever would be the REASON for doing it? If you want to add in the same set of methods as defined in multiple interfaces, go ahead. But the only REASON for implementing multiple interfaces is so that the object of this class can be handled by any of those "types". This is ... |
Hi See the code below. I unable to compile, if I uncomment the line "// t2.testA();". Here my understaning is, it gives error, because, the method "testA()" is not declared in the interface Orange. Which makes sense. If that is the case, why java allows us to define method "testA" at the time I implement interface Oracle in class "Test" In ... |
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I don't know why this program is giving error..!! i know there must be some silly stupid mistake..but i am not able to spot it..!!! Hope you guys will help me..!!! package javaprogram.Chapter8; interface int1 { public void meth1(); } interface int2 { void meth2(); } class InnerClass implements int2 { public static void main(String... args){ public void meth2( ) {System.out.println("interface ... |
Hi Everyone.. I also have one query on the same... An inner class in an Interface... here is a sample.. interface Test { class Inner_test {} } class test_class implements Test { public static void main(String []arg) { Inner_test in_t = new Inner_test(); } } This works fine... but my query is how can it work?? we are making an object ... |
class NameTag extends JComponent { public NameTag() { this.addMouseListener(new MouseListener() { public void mouseClicked(MouseEvent e) { System.out.println(" Mouse Clicked"); } public void mousePressed(MouseEvent e) { System.out.println(" Mouse Pressed"); } public void mouseReleased(MouseEvent e) { System.out.println(" Mouse Released"); } public void mouseEntered(MouseEvent e) { System.out.println(" Mouse Entered"); } public void mouseExited(MouseEvent e) { System.out.println(" Mouse Exited"); } }); } |
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interface: Interfaces are used to collect like similarities which classes of various types share, but do not necessarily constitute a class relationship. For instance, a human and a parrot can both whistle, however it would not make sense to represent Humans and Parrots as subclasses of a Whistler class, rather they would most likely be subclasses of an Animal class (likely ... |
Motivation is: Data_set is a container of Rows. It is a common case in this application that a Data_set contains exactly one Row, and in that case I want to be able to treat the Data_set as a Row (by performing Row operations directly on the Data_set, or by passing the Data_set to something that operates on Rows). I realise that ... |
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U said: Because one of the methods in the interface might return e.g. Demo, or takes Demo as an argument, but you don't want to make Demo a top level class if it's only used in relation to the MyItf interface. This we cando in defining Demo Class outside. Ok Also tell me how to pass an Object in inner class ... |
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