Constructors have no return type and their names must exactly match the class name.
Apart from this constructors and methods are similar to one another.
yes,because in constructor overloading constructor have same and different parameter list. In method overloading method have same name and different parameter list.
Both are functions, i.e., places where you can write code. A constructor is simply a special method that is invoked automatically when an object is created.
A constructor is a method that fires when the object is instantiated. A friend function is a function that has special access to the object. They are two different types of things, and cannot be further differenced.
Default Constructor will be called first . If you override Validate method , then validate method will be called .
Every class has at least one it's ownconstructort. Constructor creates a instance for the class. Constructor initiates (initialize) something related to the class's methods. Constructor is the method which name is same to the class. But there are many difference between the method (function) and the Constructor. In this example we will see that how to to implement the constructor feature in a class. This program is using two classes. First class is another and second is the main class which name is Construct. In theConstruct class two objects (a and b) are created by using the overloaded another Constructor by passing different arguments and calculated the are of the different rectangle by passing different values for the another constructor.
No.
No args means no arguments. Just like any regular method, a constructor can have zero or more arguments.No args means no arguments. Just like any regular method, a constructor can have zero or more arguments.No args means no arguments. Just like any regular method, a constructor can have zero or more arguments.No args means no arguments. Just like any regular method, a constructor can have zero or more arguments.
A constructor is just a special form of a method. You can overload constructors in the exact same way as you can overload any other method.
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.
There is no comparison between methods and constructors. They are both present for a reason and each has its own purpose.
A constructor is technically a type of method, but it is a very special type. Whereas other methods can be used to do just about anything, the only purpose of a constructor method is to create an instance of the class that contains it, often with parameters passed to it through another part of the program. This instance is called an "object" and is a central part of not only Java, but other object-oriented languages as well. A constructor method always has the same name as its containing class, and does not have a return type. Think of it this way: a class in Java is like a generic blueprint for a house. Your instance variables are like different attributes of the house - how many bathrooms will your house have, what colour will it be? Once you decide on the exact specifications for your house, you can give those parameters to the construction company, which will actually create that house. That's what a constructor method does - takes input parameters (or, lacking them, sets defaults) and creates an object.
An implicit constructor call will always call the default constructor, whereas explicit constructor calls allow to chose the best constructor and passing of arguments into the constructor.