Class Part2_InheritanceWithDefaults

java.lang.Object
Part2_InheritanceWithDefaults
public class Part2_InheritanceWithDefaults extends Object
Demonstrates inheritance-based polymorphism where a concrete default method is inherited unchanged alongside an abstract method that must be overridden.

Disassembled bytecode (javap -c): 

Compiled from "Part2_InheritanceWithDefaults.java"

public class Part2_InheritanceWithDefaults {
public Part2_InheritanceWithDefaults();Code:0:aload_0 1:invokespecial#1 // Method java/lang/Object."<init>":()V
    4:return

public static void makeSleep(AbstractAnimal);
    Code:
         0: aload_0
         1: invokevirtual #7                  // Method AbstractAnimal.sleep:()V
         4: return

public static void main(java.lang.String[]);
    Code:
         0: new           #12                 // class DogWithDefault
         3: dup
         4: invokespecial #14                 // Method DogWithDefault."<init>":()V
         7: astore_1
         8: aload_1
         9: invokestatic  #15                 // Method makeSleep:(LAbstractAnimal;)V
        12: return
}

  • Constructor Details

    • Part2_InheritanceWithDefaults

      public Part2_InheritanceWithDefaults()

  • Method Details

    • makeSleep

      public static void makeSleep(AbstractAnimal aa)
      Dynamic Dispatch using abstract parent reference.
      Parameters:
      aa - abstract-typed reference; sleep() is a non-overridden, inherited default method shared by every subclass.

    • main

      public static void main(String[] args)