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(a) A constructor is similar to a method, but it has exactly the same name as the class (including the combination of uppercase and lowercase letters).
(b) It is placed inside the class definition.
(c) The constructor is invoked automatically when you create an object based on that class.
(d) To display a message, you can use the command System.out.println("Put message here")
What else can I help you with?
Can you initialize an object without constructor in java?
No. if you wish to create an object that you plan on using in a java program then the answer is NO. You cannot initialize an object of a Java class without calling the constructor.
Does Java support copy constructor?
No. Java does not support copy constructor
Why super constructor should be first statement in subclass constructor in java?
Because, the parent class also needs to be initialized when you create an object in the inheritance hierarchy.
Can a constructor be defined within a method in java?
No.
What is a constructor and its mandatory to use constructor in a class?
A constructor is a method that is invoked when an object is created. As to being mandatory, that really depends on the programming language; in the case of Java, each class must have a constructor, however, in many cases Java will automatically provide a default constructor, so you don't really need to program it.
Can you create a constructor for an interface in java?
NO, we cannot create a contructor for an interface in java.
What happens when no constructor function is declared in a class - in Java?
When any constructor is deffined in your class, the java compiler create a default no argument constructor for you. This constructor only have an invocation to the super class constructor (" super( ) ").
Why constructor use in java?
To create objects of classes
Can you initialize an object without constructor in java?
No. if you wish to create an object that you plan on using in a java program then the answer is NO. You cannot initialize an object of a Java class without calling the constructor.
Why constructor rather than classes in java?
Constructor is not an alternative to class. In Java, you create classes; the classes contain methods - including the constructor, which can be viewed as a special method. If you want to have a constructor, you need a class that surrounds it, so it's not one or the other.
Does Java support copy constructor?
No. Java does not support copy constructor
Why super constructor should be first statement in subclass constructor in java?
Because, the parent class also needs to be initialized when you create an object in the inheritance hierarchy.
Is there a sample program for constructor?
All Java programs would have a constructor... public class Test { public Test(){ ... } ..... } This is a constructor. Even if you dont code the constructor Java would automatically place a default constructor for compilation.
What is use of constructor in java?
Constructor is used to do something (written in constructor) immediately after object creation.
What command do you use to display a message in java script?
document.write("hello world")
Can a constructor be defined within a method in java?
No.
What is copy constructor in java?
Java, unlike C++ does not support copy constructors.
