An interface in Java is similar to a class, but the body of an interface can include only abstract methods and final fields (constants).

Recently, I faced one question, which looks like this

interface inter {   public default void mymethod() { System.out.println("D"); } } 

According to interface definition, only abstract methods are allowed. Then, how did it allowed me to compile above code  ? What is default keyword  ?

On the other hand, when I was trying to write below code, then it says modifier default not allowed here

default class myclass{ } 

instead of

class myclass{  } 

Anyone tell me the purpose of default keyword  ? Is it only allowed inside interface  ? How is it different from default (no access modifier)  ?

An interface in Java is similar to a class, but the body of an interface can include only abstract methods and final fields (constants).

Recently, I saw a question, which looks like this

interface AnInterface { public default void myMethod() { System.out.println("D"); } } 

According to the interface definition, only abstract methods are allowed. Why does it allow me to compile the above code? What is the default keyword?

On the other hand, when I was trying to write below code, then it says modifier default not allowed here

default class MyClass{ } 

instead of

class MyClass { } 

Can anyone tell me the purpose of the default keyword? Is it only allowed inside an interface? How does it differ from default (no access modifier)?