_NN>interface TestInterface 
_NN>{ 
_NN>    // abstract method 
_NN>    public void square(int a); 
  
_NN>    // default method 
_NN>    default void show() 
_NN>    { 
_NN>      System.out.println("Default Method Executed"); 
_NN>    } 
_NN>} 
_NN>