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Questions and Answers
What is the purpose of a constructor in Java?
What is the purpose of a constructor in Java?
- To create a new object (correct)
- To delete an object
- To print an object
- To modify an existing object
What is the difference between a no argument constructor and a parameterized constructor in Java?
What is the difference between a no argument constructor and a parameterized constructor in Java?
- No argument constructors are used to give initial values to the instance variables. (correct)
- Parameterized constructors initialize all member variables to zero.
- No argument constructors accept one or more parameters.
- Parameterized constructors do not accept any parameters.
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Study Notes
- Constructor initializes an object when it is created.
- It has the same name as its class and is similar to a method.
- Constructors have no explicit return type.
- It is used to give initial values to the instance variables.
- Java automatically provides a default constructor that initializes all member variables to zero.
- Once you define your own constructor, the default constructor is no longer used.
- Java allows two types of constructors: No argument and Parameterized.
- No argument constructors do not accept any parameters.
- Parameterized constructors accept one or more parameters.
- Parameters are added to a constructor in the same way as they are added to a method.
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