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What will be automaticlly invoked when an object is created?
The constructor.
What is the use of new operator?
A new operater is used to allocating a memory space for a particular object.
What is an object function?
A function object is a computer programming construct allowing an object to be invoked or called as if it were an ordinary function, usually with the same syntax ...
When the destructor may be invoked in c?
C is not an object-oriented language -- there are no destructors. In C++, however, an object's destructor is invoked automatically when the object falls from scope. The destructor can also be invoked by manually deleting a raw pointer to the object (or one of its base classes), however you should only ever use the delete operator if the object was instantiated with the new operator, and only after all references or pointers to the object have fallen from scope. The safest way to manage raw pointers is to use a resource handle or smart pointer.
Can a static function be made virtual?
No. Virtual functions are invoked according to the runtime type of the object. That is; the most-derived override is automatically invoked even when the runtime type of the object cannot be determined at compile time. This is achieved through the object's virtual table. Static methods do not have any object associated with them; they can be invoked even when no object of the type exists. Without an object, there can be no virtual table. Thus static functions cannot be virtual. They are mutually exclusive concepts.
How constructor automatically invoked?
when we create the object of that class
What will be automaticlly invoked when an object is created?
The constructor.
What is the use of new operator?
A new operater is used to allocating a memory space for a particular object.
What is instance method?
An instance method is nothing but a normal java method. They can be invoked only by creating an object of the class that contains the method definition. Unlike static methods that can be invoked without creating an object of the class.
What is an object function?
A function object is a computer programming construct allowing an object to be invoked or called as if it were an ordinary function, usually with the same syntax ...
When the destructor may be invoked in c?
C is not an object-oriented language -- there are no destructors. In C++, however, an object's destructor is invoked automatically when the object falls from scope. The destructor can also be invoked by manually deleting a raw pointer to the object (or one of its base classes), however you should only ever use the delete operator if the object was instantiated with the new operator, and only after all references or pointers to the object have fallen from scope. The safest way to manage raw pointers is to use a resource handle or smart pointer.
Can a static function be made virtual?
No. Virtual functions are invoked according to the runtime type of the object. That is; the most-derived override is automatically invoked even when the runtime type of the object cannot be determined at compile time. This is achieved through the object's virtual table. Static methods do not have any object associated with them; they can be invoked even when no object of the type exists. Without an object, there can be no virtual table. Thus static functions cannot be virtual. They are mutually exclusive concepts.
What is the difference between a constructor and a thread?
These concepts are two different things. A 'Constructor' is a special method with the same class name and with no return type definition, invoked only when we create a new object (when we instantiate our object with the 'new' operator). An is used to initialize our object state (our instance variables). A thread is a separate process which runs in parallel (at the same time) in a program.
How do you create an object for anonymous class?
public class Class1 { protected InnerClass1 ic; public Class1() { ic = new InnerClass1(); } public void displayStrings() { System.out.println(ic.getString() + "."); System.out.println(ic.getAnotherString() + "."); } static public void main(String[] args) { Class1 c1 = new Class1(); c1.displayStrings(); } protected class InnerClass1 { public String getString() { return "InnerClass1: getString invoked"; } public String getAnotherString() { return "InnerClass1: getAnotherString invoked"; } } } we can do like . crieate inner class instanve in side of main class defalut consiter . use the object we do the our bz logic
If object 1 call object 2 in oop in which object the excution happen?
Strictly speaking, neither. Although member functions are obviously members of an object, this is merely an abstraction. In reality, there is only one instance of every member function, not one per object. The function knows which instance it was invoked against through the implicit 'this' pointer that is passed to the function through a hidden parameter. Thus execution occurs within the function that was invoked, not within the objects itself.
How do you create a constructor to display a message in java?
(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")
.....will be automatically Invoked when an object is created?
The Class object is automatically created by the JVM when an object is created. The Class object provides information about the Class and is primarily used by the IDEs and factory classes. The method that is automatically called when an object is created is called a constructor. In Java, the constructor is a method that has the same name as the class.
