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Java Tutorial: Overriding in Java
Overriding
It is actually a method overriding.
When the super classNameand sub classNamehas the identical function prototype, then it is termed as overriding of method
When a method is represented with a keyword final, it is impossible to override
Its Advantages are
Supports Identical Function Prototype in both super and sub classes
The subclassNamecan employ its super classNamefunctionality
Syntax
{`
classNameold_class
{
public void funcn1(void)
{}
}
classNamenew_classNameextends old_class
{
public void funcn1(void)
{}
}
`}
Rules to be adhered are
- Arguments and return_type given in overridden methods are to be alike
- Access specifier is to be same and non restricted like public or protected
- Private, final and static methods are invalid
- Constructors is invalid
- Method of instance is allowed only by an inheritance
Example
The underlying example shows how a super keyword is employed to override the super classNamefunction
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