Which of the following statements is true? Group of answer choicesThe default constructor can have zero or more argumentsEvery class has a default constructor.At least one constructor must always be defined explicitly.A default constructor is provided automatically if no constructors are explicitly defined in the class.
Question
Which of the following statements is true? Group of answer choicesThe default constructor can have zero or more argumentsEvery class has a default constructor.At least one constructor must always be defined explicitly.A default constructor is provided automatically if no constructors are explicitly defined in the class.
Solution
The statement that is true is: "A default constructor is provided automatically if no constructors are explicitly defined in the class."
Here's why:
-
The default constructor can have zero or more arguments: This is false. By definition, a default constructor does not take any arguments.
-
Every class has a default constructor: This is not necessarily true. While a default constructor is automatically provided if no constructors are explicitly defined, if a constructor is defined, a default constructor is not automatically provided.
-
At least one constructor must always be defined explicitly: This is false. As mentioned, if no constructor is explicitly defined, a default constructor is automatically provided.
-
A default constructor is provided automatically if no constructors are explicitly defined in the class: This is true. If no constructors are defined for a class, the compiler provides a default constructor.
Similar Questions
Which of the following statements are true? Please select all that apply. Group of answer choicesMultiple constructors can be defined in a class.Constructors do not have a return type, not even void.Constructors must have the same name as the class itself.Constructors are invoked using the new operator when an object is created.
Which of the following statements about constructors is/are correct?Options: Pick one correct answer from belowThe constructor name should be the same as the class name.The default constructor invokes super() and sets all instance variables to a default value such as 0, null.If we do not define a constructor for a class, the compiler will generate one for usIf we want to call parent class constructor, we must call it in the constructor's first line.All the above
Which is/are correct?I. When we failed to provide a constructor to a class, a default constructor is created.II. The default constructor has only the statement “this()”.III. If we created a constructor, then the default constructor will be vanished.*Only I.Only I and IIIAllOnly II and III.Only II.
Which of the following statements regarding constructors are true? You can select more than one statement.Group of answer choicesConstructors can be overloaded.A class can have one and only one constructor.A class can have more than one constructor.Has the same name as the class.You must define at least one constructor for every class you create.
Which of the following statements is true? Group of answer choicesConstructors must have the same name as the class itself.All are trueConstructors are invoked using the new operator when an object is created.Constructors do not have a return type, not even void.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.