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2012-07-30 00:00:49
2012-07-30 00:00:49

yes,because in constructor overloading constructor have same and different parameter list.

In method overloading method have same name and different parameter list.


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really there is no difference between constructor overloading and metho overloading

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.

Overloading constructor means when you have multiple constructors in a class but with different number of arguments. We cannot override a constructor, but we can override a method having same arguments and same return type. This means when I subclass a particular class then I can call the superclass's class method and override that with subclass's own logic.

method overloading means function having same name but different prototype .. e.g class demo { int i; public void display() { System.out.println("hello"); } public void display(int x) //method overloading { i=x; System.out.println("i="+i); } } class mainDemo { public static void main(String s[]) { demo ob=new demo();//creating object ob.display(); ob.display(5); } }

The first thing to note about constructor overloading is that Java creates a no argument constructor for you if and only if you have not typed a constructor yourself. Every class has a constructor even abstract ones (default no argument constructor). Abstract constructors are always executed. To overload a constructor you can do the following: class Test { String name; Test(String n) { name = n; System.out.println("Constructing Test Object named: " + name); } } In the case above we are overloading the default no argument constructor with a constructor that takes a String parameter. You can write you own no argument constructor as follows: class Test { Test() { System.out.println("Constructing Test Object"); } } To override our own no argument constructor we do this: class Test { Test() { // our no argument constructor System.out.println("Constructing Test Object"); } String name; Test(String n) { // overloading our no argument constructor with this // constructor that take a String parameter name = n; System.out.println("Constructing Test Object named: " + name); } }

Yes. Method Overloading is a form of Polymorphism

method overriding :method overriding means redefine methods in sub classes they already defined in the Super classes.method overloading : It means methods with the same name but with a different signature exist in one class

The main method is the method called when the Java application is started The constructor is called whenever a new object is instantiated.

A constructor is a special method that gets executed when the object is created.

Default Constructor will be called first . If you override Validate method , then validate method will be called .

No. If you do not write a constructor for you classes, the default Object constructor can still be used.

You overload a constructor by declaring two or more constructors in a class, each with different signatures. When no constructor is specified, a default constructor and a copy constructor are implied. Both can be overridden. The default constructor can also be overloaded if all arguments are given default values in the declaration. You can add as many construction overloads as required in order to initialise your class. If your class has many members to initialise, it may be helpful to use a structure and an overloaded constructor to accept the structure. For every constructor that has exactly one argument, there should also be an equivalent assignment operator overload. The copy constructor assignment overload is implied if not specified.

You can have any number of constructors for a class. All we need to do is implement constructor overloading. Ex: let us say we want to create multiple constructor for a class Test Public class Test { Public Test() { //code } Public Test(int vals) { //code } Public Test(String val) { //code } }

method overloading occurs when we use two functions or more with the same name.In function overloading compiler detect which method is call actually throw the parameters passed to the methods.In function overloading parameters of functions are different.

Constructor overloading is similar to method overloading. You can overload constructors by changing the parameter list in the class definition. Here is an example public class Box{ private int height; private int width; private int breadth; // First constructor with no parameters Box(){ height = 0; width = 0; breadth = 0; } // This is the second overloaded constructor Box(int h,int w,int b){ height = h; width = w; breadth = h; } public void display(){ System.out.println("Height: "+height+" Width: "+width+" Breadth: "+breadth); } public static void main(String args[]){ Box obj = new Box(1,2,3); obj.display(); } }

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.

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.

Yes, a constructor name should always be the same as the class name. You do not directly call the constructor when you instantiate an object, so how the machine knows which method call? Easy, our constructor is always a method with the same name as the class and with no return value.

There is no specific keyword for a constructor in C++. Simply define and declare a method of the class with the same name as the class and it will be a constructor. A constructor with no arguments is the default constructor, a constructor with one argument of class type is the copy constructor, and a constructor with one argument of some other type is the conversion constructor. You can provide other overloaded constructors if you want.

A constructor is usually the first method that gets invoked when a class is instantiated. This method usually creates the class object and sets initial variable values in order for the class object to do its functions. A Constructor in java cannot have a return type. It always creates and returns an object of the class for which it is the constructor. You cannot return a value from a constructor explicitly and if you try to do that, the compiler will give an error. The system knows that the purpose of the constructor is to create an object of the class and it will do the same irrespective of whether you declare a return type or not.

Overloading is the means by which we can provide two or more different definitions of the same method in the same namespace. Overriding is the means by which a derived class may redefine the meaning of a base class method.

Overloading is mainly used to pass the different parameters dynamically, during the runtime for the same time. So, depending on the parameters we passed, it calls the appropriate method.

A constructor is a special method that has the same name as the class name, and it cannot be invoked or called like a method call, it must be invoked by the new operator. For example, new Object();

If you want to change the behavior of a method that exists in a super class, overloading is the only way you can alter the behavior.

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