Overloading
Method Overloading occurs when a class has many methods with the same name but distinct parameters. Moreover, If we only need to conduct one operation, having the methods name the same improves the readability of the programme.
We can define many methods in a class, even if they have the same name, as long as their parameters are different. In this case methods are claim to overloaded and this complete process is define as method overloading.
In addition, Method overloading is an implementation of polymorphism in a code which is “One interface, multiple methods” paradigm.
To invoke an overloaded method, it is important to pass the right number or arguments or parameters; since this will determine which version of method to actually call. All the overloaded methods have different return types but we can’t distinguish method based on the type of data they return.
Benefits of Method Overloading
- Firstly, Technique over-burdening builds the coherence of the program.
- Secondly, This gives adaptability to developers with the goal that they can call similar strategy for various sorts of information.
- This makes the code look spotless.
- This lessens the execution time in light of the fact that the limiting is done in accumulation time itself.
- The code’s complexity is limit the technique overburdening.
- With this, we can utilize the code once more, which saves memory.
Overriding
When a subclass (child class) in Java contains the same method as the parent class, this is define as method overriding.
In other words, method overriding occurs when a subclass provides a customized implementation of a method specified by one of its parent classes.
Usage of Java Method Overriding
- Firstly, Method overriding is a mechanism for implementing a method that has already been implement its superclass.
- Secondly, Method overriding is use for runtime polymorphism.
Difference between Overloading and Overriding
| Overloading | Overriding |
| Overloading is a type of polymorphism that occurs during the compilation process. | A polymorphism that occurs at runtime is method overriding. |
| Inheritance may or may not be required for method overloading. | Inheritance is always required for method overriding. |
| Methods must have the same name but different signatures when overloading. | Methods that are overridden must have the same name and signature. |
| The return type in method overloading can be the same or different, but we only need to modify the parameter. | The return type must be the same or co-variant. when overriding a method. |
| It helps to make the programme more readable. | It’s used to grant the method’s specific implementation, which its parent or superclass already provides. |
| It takes place within the class. | It is divided into two classes, each with its own inheritance ties. |
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