In software engineering, Push Down refactoring involves moving a method from a superclass into a subclass. Compare the following Java classes before and after the Push Down refactor is applied:

   public class SuperClass{

       void methodA() {

           //do something

}

       void methodB() {

           //do something else

} }

   public class SubClass extends SuperClass {

       void methodC() {

           //do something

} }

After the Push Down refactor is applied:

   public class SuperClass{

       void methodA() {

           //do something

} }

   public class SubClass extends SuperClass{

       void methodB() {

           //do something

}

       void methodC() {

           //do something else

} }

See also

Pull Up refactoring