What are default methods in Java?

interface Educative 
{ 
    // abstract method 
    public void printCourse(int courseCode); 
  
    // default method 
    default void feature() 
    { 
      System.out.println("Default Method Executed"); 
    } 
} 
  
class Courses implements Educative 
{ 
    // implementation of square abstract method 
    public void printCourse(int courseCode) 
    { 
        System.out.println(courseCode); 
    } 
  
    public static void main(String args[]) 
    { 
        Courses programming = new Courses(); 
        programming.printCourse(101); 
        // default method called
        programming.feature();
    } 
}