The difference between overriding and overloading in Java is a common source of confusion – but it is fairly simple to understand. Let’s start the discussion by talking more about method overloading. Overloading in Java can occur when two or more methods in the same class share the same name or even if a child class shares a method with the same name as one of it’s parent classes. But, in order to actually have overloaded methods, the methods not only have to have the same name, but there are other conditions that must be satisfied – read below to see what those conditions are.
Suppose we have a class called TestClass which has 2 methods, and both methods have the same name – let’s say that name is “someMethod” – this would be considered to be method overloading if at least one of these 2 things is true:
How to NOT overload methods:
It’s important to understand that method overloading is NOT something you can accomplish by doing these 2 things:
Confused? Well, here are some very helpful examples of where overloading would be both valid and invalid:
Examples of Method Overloading in Java – both valid and invalid:
What about method overriding?
Overriding methods is completely different from overloading methods. If a derived class requires a different definition for an inherited method, then that method can be redefined in the derived class. This would be considered overriding. An overridden method would have the exact same method name, return type, number of parameters, and types of parameters as the method in the parent class, and the only difference would be the definition of the method.
Let’s summarize the differences between overloading and overriding. When overloading, one must change either the type or the number of parameters for a method that belongs to the same class. But, overriding a method means that a method inherited from a base class is what’s being changed.
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501 Error Code Explained The server either does not recognise the request method, or it lacks the ability to fulfill the request. Why it occurs The error occurs when the Web server does not understand or does not support the HTTP method it finds in the HTTP data stream sent to it by the client. The method in the request HTTP data stream should be one of the following GET, OPTIONS, HEAD, POST, PUT, DELETE, TRACE and CONNECT as defined by the HTTP protocol Or the method may be valid but not actually supported by the Web server. Fixing 501 error code The client should specify a valid request type. Even after that if the Web server is responding incorrectly, then the web server simply needs to be upgraded to fix the issue. If you are registered with 100pulse, your site will be monitored and you will be intimated by an email or a short message service when 501 status code error occurs.
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