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What is the primary purpose of a constructor in Java?

• To define methods within a class.
  

• To create objects of a class

• To initialize the state (instance variables) of an object.

• To declare class attributes

Which of the following statements about Java constructors is true?

• Constructors can have a return type, including void.

• Constructors are inherited by subclasses

• A class can have multiple constructors, provided they have different parameter lists (constructor overloading).

• Constructors must always be declared public

What is the difference between a constructor and a method in Java?

• Constructors do not have a return type, while methods do.

• Methods are used to create objects, while constructors are not.

• Constructors can be called multiple times, while methods cannot.

• Methods are used to initialize instance variables, while constructors are not.

Can a constructor be private in Java?

• No, private constructors are not allowed in Java.

• No, constructors must always be public.

• Yes, to restrict object creation from outside the class.

• Yes, but only if the class is abstract.

What happens if a class does not explicitly define a constructor in Java?

• The class will not compile.

• A default constructor is provided by the compiler.

• Only static methods can be called.

• The class will throw an error at runtime.

What is constructor overloading in Java?

• Defining multiple constructors with the same parameter list.

• Defining multiple constructors with different parameter lists.

• Using constructors in a subclass only.

• Creating a constructor that returns a value.

Which of the following is true about the default constructor in Java?

• It initializes all instance variables to their default values.

• It must be declared as public.

• It can be defined by the user only.

• It cannot be used if a parameterized constructor is defined.

What is the result of calling a constructor from another constructor in the same class?

• It can only be done with static methods.

• It will cause a compilation error.

• It is called constructor chaining.

• It is not allowed in Java.

What happens if you do not define any constructor in a Java class?

• a) The program will not compile.

• The compiler automatically provides a default (no-argument) constructor.

• The class cannot be instantiated

• The constructor from another class will be used. 

What is a constructor in Java?

• A method that returns a value

• A special type of method that is used to initialize objects

• A method to perform mathematical calculations

• A method that is used to print output