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We can't call (i.e, execute) an abstract method in java because these methods don't contain any code to execute!

In some special cases like when an abstract method is overridden in a subclass, and when we are using super class reference variable( which is referring that subclass object), it appears that we are calling abstract method in super class. But actually the code in the subclass method is being executed.

Example:

abstract class SuperClass{

abstract void show(); //abstract method in super class

}

class SubClass extends SuperClass{

void show(){ //show() of SuperClass overridden in SubClass

System.out.println("SubClass Method");

}

}

class Example{

public static void main(String... args){

SuperClass sup=new SubClass();

sup.show(); //SubClass show() will be executed !!!

}

}

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Shortly, you can not.Different approaches are however available.1. Put your non static method in different class. Then call it from your static content by first instantiating the class.2. Make a duplicate static method for your non static method and use from your static content.


Can you non-recursively call a method you are currently in in Java?

The definition of recursion states that each method call after the initial one must be influenced by the previous call (its results must depend on the results to previous calls). While this can lead to a method calling itself in a non-recursive way, it seems that it is also a sign of poor coding style and hard to read methods.


What can be declared in an abstract class?

Abstract classes are to be extended until to a concrete class.Can have both abstract & non abstract methods.An Abstract class can not be instantiated.A non abstract class can be extended to an abstract class.If At least one abstract method present in a class then that class must be abstract.abstract & final modifiers can never be together.abstract classes can have both abstract methods & non abstract methods.


What are abstract classin java?

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Related Questions

Can you refer static method from non static method in java?

Yes, it is possible to call a static method from a non-static method. However, it is not possible to call a non-static method from a static method without first having an instance to operate on.


How do you write concrete method inside abstract class?

There is no difference with method declaration and implementation between abstract and non-abstract classes. You do the exact same thing when writing a concrete method in either an abstract or non-abstract class.


Can you refer non static method from static content in java?

Shortly, you can not.Different approaches are however available.1. Put your non static method in different class. Then call it from your static content by first instantiating the class.2. Make a duplicate static method for your non static method and use from your static content.


Can you non-recursively call a method you are currently in in Java?

The definition of recursion states that each method call after the initial one must be influenced by the previous call (its results must depend on the results to previous calls). While this can lead to a method calling itself in a non-recursive way, it seems that it is also a sign of poor coding style and hard to read methods.


What can be declared in an abstract class?

Abstract classes are to be extended until to a concrete class.Can have both abstract & non abstract methods.An Abstract class can not be instantiated.A non abstract class can be extended to an abstract class.If At least one abstract method present in a class then that class must be abstract.abstract & final modifiers can never be together.abstract classes can have both abstract methods & non abstract methods.


What are abstract classin java?

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