A marker interface is an interface that has no methods or fields. It only serves as a way to mark or tag a class as belonging to a certain category or having a certain property. For example, the ...

Interface with default methods in java 8in later version of java interfaces always contained only method declaration. we are not giving method definition in the interfaces because java did not allow ...

Learn when and how to use default methods in interfaces. Discover when to declare a static method in an interface. We have seen interfaces so far use abstract methods. Like the Swimmable interface ...

Marker Interfaces or Null interface in Java are special type of interfaces in character as they have no methods declared in them which means that if any classes implementing these interfaces don't ...

In Java, a default method in an interface is like a special method that provides a default (predefined) implementation. It allows you to add new methods to an existing interface without breaking the ...

Java Supplier interface tutorial. As you can see, the code for the class that implements Java’s Supplier interface is fairly simple. The only requirements are the class declaration and the ...

An interface is a programming structure that declares properties and methods without implementation. Once an interface is declared it is implemented in a class. In other words, an interface declares ...