An interface is a prototype for a class. The class may contains non-implemented method as well as no member variables (i.e. no variable declaration). The syntax for creating interfaces is :-
interface interface_name
{
//statements
}
The syntex for implementing interfaces using "implements" keyword is :-
class class_name implements interface_name
{
//statements
}
yes we can define a variable in an interface in java.
Java Swings was introduced in 1997.
Runnable interface
In Java, you cannot compile an interface directly because interfaces themselves are not executable; they are meant to define a contract for classes that implement them. However, you can compile the interface along with the implementing classes. When you compile a Java program, the Java compiler generates bytecode for all classes and interfaces, which can then be executed by the Java Virtual Machine (JVM).
According to a beginner's book on Java, an interface can't have constructors. Also, the interface itself can't contain the method implementation.
API is an Application Programming Interface..that means Some collection for designing concept for GUI(Graphical User INterface) By Saravanan
yes we can define a variable in an interface in java.
NO, we cannot create a contructor for an interface in java.
Java Swings was introduced in 1997.
interface is a list of methods which implements that interface
A tagging interface type in Java is an interface that has not defined methods such as the java.io.Serializable interface.
Runnable interface
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.
Yes. This is a valid interface definition in Java: interface Useless {}
In Java, Java does support the concept of destructor, it's done via special method finalize.
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.
Interface is collection of abstract methods which has only declaration and no implementation