4. Which two statements are NOT true about constructors?(Choose two) (Choose all correct answers) A constructor method may return a value. A constructor method is called once for each instance of an object. The constructor method is called during instantiation. A constructor method has a void return type. 5. In Java, the this keyword can be used to reference the current object's fields and methods. True or False? True False

Question

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4. Which two statements are NOT true about constructors?(Choose two) (Choose all correct answers) A constructor method may return a value. A constructor method is called once for each instance of an object. The constructor method is called during instantiation. A constructor method has a void return type. 5. In Java, the this keyword can be used to reference the current object's fields and methods. True or False? True False

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Answer 1

4. A, D
5. True

Answer 2

Step 1

For question 4, we need to identify two statements that are NOT true about constructors.

Step 2

Constructors in object-oriented programming are special methods that are called when an object is created. They are used to initialize the object's attributes.

Step 3

The first statement says, "A constructor method may return a value." This is not true. Constructors do not have a return type, not even void. They are designed to build an object and automatically return the constructed object.

Step 4

The second statement says, "A constructor method has a void return type." This is also not true. As mentioned above, constructors do not have a return type, not even void.

Step 5

The third statement says, "A constructor method is called once for each instance of an object." This is true. Each time an object is created, the constructor is called.

Step 6

The fourth statement says, "The constructor method is called during instantiation." This is also true. The constructor is called when an object is created, which is during instantiation.

Step 7

For question 5, we need to determine if the statement "In the this keyword can be used to reference the current object's fields and methods" is true or false.

Step 8

The 'this' keyword in Java is used to refer to the current object. It can be used to access the object's fields and methods. Therefore, the statement is true.