what is dynamic method dispatch ?
- 27 Answers
- 47696 Views
- Fidelity, MUET, SDSF, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / penchala
Dynamic dispatch is a mechanism by which a call to
Overridden function is resolved at runtime rather than at
Compile time , and this is how Java implements Run time
Polymorphism.
| Is This Answer Correct ? | 87 Yes | 5 No |
Answer / yayati pavan kumar
Ex:
class A
{
public void m1()
{}
}
class B extends A
{
public void m1()
{
}
main()
{
A a=new B();//B reference will be assign at run time
a.m1();//class B method m1() will be called at runtime
}
}
| Is This Answer Correct ? | 80 Yes | 18 No |
Answer / rashmi
Dynamic Method Dispatch is Run -time Polymorphism which is
Method Overriding.
| Is This Answer Correct ? | 72 Yes | 15 No |
Answer / ravikiran
super class reference variable refering to a subclass object
is called dynamic method dispatch.
| Is This Answer Correct ? | 37 Yes | 8 No |
Answer / arijit
Java uses this fact to resolve calls to overridden methods
at run time. Here’s
how. When an overridden method is called through a
superclass reference, Java determines
which version of that method to execute based upon the type
of the object being referred to at the
time the call occurs. Thus, this determination is made at
run time with the help of dynamic method dispatch .
| Is This Answer Correct ? | 31 Yes | 4 No |
Answer / rajashree
This is a unique feature in JAVA.as the name itself
suggests that it is related with run time.In this classes
has methods with same method name and signature.However
which method will b executed will be decided during run
time.
| Is This Answer Correct ? | 30 Yes | 12 No |
Answer / shanti bhushan singh
In dynamic method dispatch a reference of class can be
created and that can be used to executed overridden method
at run time.
| Is This Answer Correct ? | 20 Yes | 5 No |
Answer / ramya
Dynamic method dispatch is the process the Java runtime
system uses to determine which method implementation to call
in an inheritance hierarchy. For example, the Object class
has a toString() method that all subclasses inherit, but the
String class overrides this method to return its string
content. If a String or other object type is assigned to an
Object reference using application logic, the Java compiler
cannot know in advance where a call to the toString() method
will be resolved, it must be determined dynamically at runtime.
| Is This Answer Correct ? | 7 Yes | 3 No |
Answer / srinivasa
Dispatching call to a method at runtime by jvm.In dinamic
dispatch method invocation jvm identifies which should be
called
| Is This Answer Correct ? | 8 Yes | 5 No |
Answer / j mathew
class A{
void hallo(){
System.out.println(" hallo of A");
}
}
class B extends A {
void hallo(){ // method overridden.
System.out.println("hallo of B");
}
}
class C extends B {
void hallo(){ // method overridden
System.out.println("hallo of C");
}
}
class Demo {
public static void main(String[] args) {
A a = new A(); // create object of A
B b = new B(); // create object of B
C c = new C(); // create object of C
A r; // create a reference of super class
r=a; // assign object of A to the reference var. r
r.hallo(); // it calls hallo() of class A
r=b; // super class variable can reference a
sub class object.
r.hallo(); // it calls hallo() of class B
r =c; // super class variable can ref. sub
class object.
r.hallo(); // it calls hallo() of class C
}
}
this is how dynamic dispath method works.
overridden methods are resolved at run time rather than
compile time. At compile time it doesn't know which over-
ridden method will be called.
it comes to know at run time, thats why it is called as run
time polymorphism.
| Is This Answer Correct ? | 6 Yes | 3 No |
What does int [] mean in java?
What package is math in java?
What happens if we override private method?
What is the difference between iterator and list iterator?
What does microservices mean?
What is java util concurrentmodificationexception?
What is the difference between the synchronized() & static synchronized()?
Explain illegalmonitorstateexception and when it will be thrown?
What are the restriction imposed on a static method or a static block of code?
Describe string intern() methodology
all are saying java doesn't support multiple inheritance but by default Object class is super class for all the user defined classes and we can extend atmost one class so each class can extend more than one class so java supports multiple inheritance?i am confused with this,pls any one explain me.
Can a main method be overloaded?
Core Java 
