An interface in Java is like an abstract class, but there are no method bodies allowed in it and it has to be declared with the interface keyword. It is Java's way of getting around the Deadly Diamond of Death. Only abstract methods and constants are allowed in it.
I guess you mean Java, there is no interface in C++.
NO, we cannot create a contructor for an interface in java.
yes we can define a variable in an interface in java.
interface is a list of methods which implements that interface
In Java, an interface is a suite of methods that multiple different classes are able to implement. Interfaces are not assigned to any particular class. For example, multiple graphics classes can use the same interface to change their size and colour.
A tagging interface type in Java is an interface that has not defined methods such as the java.io.Serializable interface.
Runnable interface
Yes. This is a valid interface definition in Java: interface Useless {}
Interface is collection of abstract methods which has only declaration and no implementation
Interface Java can be used for a variety of tasks and commands such as .swf files, Java files, running scripts, as well as website video players for websites.
maybe
According to a beginner's book on Java, an interface can't have constructors. Also, the interface itself can't contain the method implementation.