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Cannot Override Static Method

Taking the Employee example, if we call RegularEmployee.getBonusMultiplier() - which method is supposed to be executed? Classes are full class objects in Ruby, they are not in Java. Static methods however do not belong to any object instance, but to the class. What is with the speech audience? his comment is here

In Java this happens when calling a static method from an object (obj.staticMethod()) -- which is allowed and uses the compile-time types. When you say overriding static methods, static methods we will access by using class name, which will be linked at compile time, so there is no concept of linking methods at Can I hint the optimizer by giving the range of an integer? Answer of this question lies on time of resolution.

I am suggesting that an alternative design might have been a better idea. I personally prefer to use static methods to perform some actions without creating any instance of a class. Object: static/runtime type Child -- call static from non-static method of Base. One was a concern with performance: there had been a lot of criticism of Smalltalk about it being too slow (garbage collection and polymorphic calls being part of that) and Java's

String to Enum in Java - Conversion Example How to find GCD of two numbers in Java - Euclid's ... Another must read: Java: Factory Design-Method Pattern Thread-Safe and a Fast Singleton Implementation in Java The distinction between hiding and overriding has important implications. Perhaps if I tried to write a compiler for an OOP language, I would quickly see why implementing it so that static functions can be overriden would be difficult or impossible. Do Morpheus and his crew kill potential Ones?

Static says - compile time, overriding is used for dynamic polymorphism. Recommended Reading The Best Book to Learn Java in 30 days 10 Java Web Service Interview Questions Top 10 Android Interview Questions for Java Programmers How to use an ArrayList in In it, you'll get: The week's top questions and answers Important community announcements Questions that need answers see an example newsletter By subscribing, you agree to the privacy policy and terms http://stackoverflow.com/questions/16617408/why-doesnt-the-compiler-complain-when-i-try-to-override-a-static-method A static method is not associated with any instance of a class so the concept is not applicable.

But if you remove the "static"s, then SpecialEmployee's get a 3% bonus. (Admittedly, this example is poor coding style in that in real life you would likely want the bonus multiplier One was a concern with performance: there had been a lot of criticism of Smalltalk about it being too slow (garbage collection and polymorphic calls being part of that) and Java's Instead, you hide them as Eng.Fouad mentioned in his answer. –Dorus May 17 '13 at 20:49 @goblinjuice nicely explained. thank u. –user2395360 May 17 '13 at 21:10 @Dorus don't see inheritance mentioned anywhere! –user2395360 May 17 '13 at 21:12 Indeed inheritance was not mentioned, but the

In short Static method can be overloaded, but can not be overridden in Java. What was Stan Lee's character reading on the bus in Doctor Strange How do fonts work in LaTeX? more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed I am able to do it.

I can say myObject.getClass() and it will return me an instance of the appropriate class object. –Jay Feb 8 '10 at 18:16 4 You get only a "description" of the this content Called static Child method. It just wasn't designed to do it. –jmucchiello Jun 23 '10 at 16:58 add a comment| up vote 2 down vote Well... How to make my logo color look the same in Web & Print?

Enter your email address... It takes a different thought pattern. Static unimplemented methods solve this. –Dmitry Sep 5 at 21:52 add a comment| up vote 0 down vote What good will it do to override static methods. weblink java static override static-methods share|improve this question edited Feb 8 '10 at 17:14 Michael Myers♦ 123k31231268 asked Feb 8 '10 at 17:08 sgokhales 28.4k1988120 1 Most OOP languages don't allow

Yes, yes, I understand that non-static methods are attached to an instance while static methods are attached to a class, etc etc. Object: static/runtime type Child -- call static from non-static method of Base. However, all this would do is to re-implement regular class methods, adding redundancy to the language without really adding any benefit.

Changing the rules To change these rules, so that the last call in the example called Child.printValue(), static calls would have to be provided with a type at run-time, rather than

BTW, in a very real sense static functions are called with an instance quite routinely: When you call the static function from within a virtual function. If they dispatched dynamically (and thus could be overriden) the static keyword just wouldn't make sense anymore. Java67 Java Programming tutorials and Interview Questions Pages Home core java coding thread sql java 8 books array string j2ee oop debugging collections data structure Can we override static method in Child c = new Child(); c.name(); // will call child static method because static method // get called by type of Class } } class Parent{ /* * original static method

All examples given here are as simple as possible to help beginners. Foe example public class Animal { public void test() { } } public class Dog extends Animal { public void test() { } }test() method in Dog class is overridden . What is difference between wait and sleep in Java?... http://scriptkeeper.net/cannot-override/cannot-override-final-method-exception.html kartik That is how it is.

But at same time, you can overload static methods in Java, there is nothing wrong declaring static methods with same name, but different arguments. Now that I see the differences and as I Java/C# developer myself, I can understand why the answers you get from Java developers may be confusing if you are coming from public static void staticMethod() { System.out.println("SuperClass: inside staticMethod"); } // ...... } public class SubClass extends SuperClass { // ...... // overriding the static method public static void staticMethod() { System.out.println("SubClass: You probably know about class loader in java.

share|improve this answer answered Jul 24 '12 at 11:25 jqno 9,87343557 add a comment| up vote 0 down vote any static block in java, may be static variables, methods are loaded These are not dynamic languages, though C# is adding some forms of dynamic. But this could be possible if MyClass was an object at run-time on which you invoke a method, as in Smalltalk (or maybe JRuby as one comment suggest, but I know So it was very convenient and intuitive and I would expect this in Java.

With more than 14 millions pageviews / month, Crunchify LLC, has changed the life of over thousands of individual around the globe teaching Java & Web technology without spending a money up vote 316 down vote favorite 123 Why is it not possible to override static methods? because it is easy to think you are invoking an instance method, and get confused into thinking that overriding is happening.