Select the correct answerIf super class and subclass have same variable name, which keyword should be used to use super class?Optionsthissuperupperclassname
Question
Select the correct answer
If super class and subclass have same variable name, which keyword should be used to use super class?
Options:
- this
- super
- upperclassname
Solution
Break Down the Problem
- Identify the context: This question relates to programming and object-oriented principles.
- Define the terms: "super class" refers to the parent class, and "subclass" refers to the child class that inherits from the parent.
Relevant Concepts
- Super Keyword: In object-oriented programming, especially in languages like Java, the
super
keyword is used to refer to the parent class. - Variable Shadowing: When a subclass has a variable with the same name as that in the super class, it shadows the parent variable.
Analysis and Detail
- When you want to access the superclass's variable that has been shadowed by the subclass's variable, you should use the
super
keyword to distinguish the parent class's variable from the subclass's variable.
Verify and Summarize
- In languages like Java,
super.variableName
is used to reference the variable in the superclass.
Final Answer
The correct keyword to use in this scenario is super
.
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