Software and Applications (non-game)
What will happen if you declared constructor in private section?
Asked in C++ Programming
Can constructor be declared as constant in c plus plus?
Asked in Java Programming
What will happen when the class is declared as private in java?
Asked in Java Programming, .NET Programming, C Sharp
What happen when static data field is initialised in a non static constructor?
Asked in Java Programming
Can you override the constructor?
No. You cannot override the constructor. You can only overload them. You can argue that, during inheritance if you provide a child class constructor it should override the parent class constructor. Unfortunately, that doesnt happen. The parent class constructor will get called eventually and you cant block it. Such a situation is called Constructor Chaining Constructor Chaining We know that constructors are invoked at runtime when you say new on some class type as follows: Lamborghini h = new Lamborghini(); But what really happens when you say new Lamborghini() ? (Assume Lamborghini extends Car and Car extends Object.) 1. Lamborghini constructor is invoked. Every constructor invokes the constructor of its superclass with an (implicit) call to super(), 2. Car constructor is invoked (Car is the superclass of Lamborghini). 3. Object constructor is invoked (Object is the ultimate superclass of all classes, so class Car extends Object even though you don't actually type "extends Object" into the Car class declaration. It's implicit.) At this point we're on the top of the hierarchy. 4. Object instance variables are given their explicit values. By explicit values, we mean values that are assigned at the time the variables are declared, like "int x = 27", where "27" is the explicit value (as opposed to the default value) of the instance variable. 5. Object constructor completes. 6. Car instance variables are given their explicit values (if any). 7. Car constructor completes. 8. Lamborghini instance variables are given their explicit values (if any). 9. Lamborghini constructor completes.
Asked in Law & Legal Issues, Discrimination
Can membership to a private organization be restricted by gender?
Asked in Job Training and Career Qualifications, Police and Law Enforcement, Criminal Justice Careers
Do you have to become a police officer to become a private detective?
Asked in Tornadoes
Does a tornado happen on the coast or in the interior section of the US?
Asked in Science
If an epidemic were declared in your town. What could happen to control and eventually eliminate it?
Asked in Political Office Holders
Can the president stay in office if war is declared?
Asked in Computer Programming, C Programming
What happen if you declare a global variable as static in C language?
What will happen if a private ip address is assigned to a public interface connected to an isp?
Asked in Section 8 Housing
What happen when someone is on Section 8 and recieves an inheritience ?
Asked in Computer Programming, Java Programming
What is a constructor and what are its special properties?
A constructor creates an Object of the class that it is in by initializing all the instance variables and creating a place in memory to hold the Object. It is always used with the keyword new and then the Class name. For instance, new String(); constructs a new String object. Sometimes in a few classes you may have to initialize a few of the variables to values apart from their predefined data type specific values. If java initializes variables it would default them to their variable type specific values. For example you may want to initialize an integer variable to 10 or 20 based on a certain condition, when your class is created. In such a case you cannot hard code the value during variable declaration. such kind of code can be placed inside the constructor so that the initialization would happen when the class is instantiated. Properties: 1. You need not code them explicitly. Java will automatically place a default constructor 2. You can pass arguments to the constructor 3. They can return only an object of type of that class 4. They can be made private 5. They would be executed always (Everytime a class is instantiated)