This means we don’t need to explicitly declare them as abstract. When default methods were introduced in Java 8, some developers thought they would be the same as abstract classes. That’s not ...

abstract public void greet();//abstract method makes class abstract. //anything can be overwritten into greet. //greet() method is overridden by greet() of derived class. abstract public void greet2() ...

It promotes a more declarative and expressive coding style. Functional interfaces are interfaces with a single abstract method. Java 8 formalized this concept, making it easier to work with lambda ...