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Volunteer bias is a threat to external validity.
Reference Super
An instance where the "super" keyword is used in Java to refer explicitly to a superclass's variables or methods.
Subclass Constructor
A constructor in a subclass that is used to initialize new instances of the subclass, potentially invoking the superclass constructor as part of the initialization process.
Superclass
Within object-oriented programming, a foundational class whose properties and methods are inherited by other classes.
Inheritance
A fundamental concept in object-oriented programming where one class can inherit fields and methods from another class, facilitating code reuse and polymorphism.
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