Static Method inside Interface Java 8 with Live Coding
Purpose: Static methods in interfaces allow you to provide utility methods or helper functions that are closely related to the interface's concept but don't depend on specific instance data. These methods are intended to be used by interface implementers and clients of the interface.
Declaration: To define a static method in an interface, you simply use the static keyword in the method declaration, just like in a regular class. For example:
interface inter {
public static void say() {
System.out.println("Hello static method inside interface");
}
}
Access: You can call a static method from an interface using the interface name itself, without the need for an instance of the interface. For example:
public class Test implements inter{
public static void main(String[] args) {
Test t = new Test();
// t.say(); // CE
// Test.say(); //CE
inter.say();
}
}
Inheritance: Static methods in interfaces are not inherited by implementing classes. If a class implements an interface, it doesn't inherit the static methods of that interface.
Override: Subinterfaces can't override static methods from their parent interfaces. If a subinterface declares a static method with the same signature as its parent interface, it's seen as a new method, not an override.
Use Cases: Static interface methods are often used for providing default behavior or constants that are associated with the interface. They can help reduce code duplication in implementing classes and promote code consistency.
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