Skip to main content

Code

1. java codes




2.php codes

Comments

Post a Comment

Popular posts from this blog

46 to 50 Java Questions

46. What is Constructor? A constructor is a special method whose task is to initialize the object of its class. It is special because its name is the same as the class name. They do not have return types, not even void and therefore they cannot return values. They cannot be inherited, though a derived class can call the base class constructor. Constructor is invoked whenever an object of its associated class is created. 47. What is an Iterator ? The Iterator interface is used to step through the elements of a Collection. Iterators let you process each element of a Collection. Iterators are a generic way to go through all the elements of a Collection no matter how it is organized. Iterator is an Interface implemented a different way for every Collection. 48. What is the List interface? The List interface provides support for ordered collections of objects. Lists may contain duplicate elements. 49. What is memory leak? A memory leak is where an unreferenced object that will ne...
Post a Comment
Read more

26 to 30 Questions of Java

26. What is the difference between this() and super()? this() can be used to invoke a constructor of the same class whereas super() can be used to invoke a super class constructor. 27. What is Domain Naming Service(DNS)? It is very difficult to remember a set of numbers(IP address) to connect to the Internet. The Domain Naming Service(DNS) is used to overcome this problem. It maps one particular IP address to a string of characters. For example, www. mascom. com implies com is the domain name reserved for US commercial sites, moscom is the name of the company and www is the name of the specific computer, which is mascom’s server. 28. What is URL? URL stands for Uniform Resource Locator and it points to resource files on the Internet. URL has four components: http://www. address. com:80/index.html, where http – protocol name, address – IP address or host name, 80 – port number and index.html – file path. 29. What is RMI and steps involved in devel...
Post a Comment
Read more

Latest Java 6 to 10

6. What are the access modifiers in java ? There are 3 access modifiers. Public, protected and private, and the default one if no identifier is specified is called friendly, but programmer cannot specify the friendly identifier explicitly. 7. What is are packages? A package is a collection of related classes and interfaces providing access protection and namespace management. 8. What is meant by Inheritance and what are its advantages? Inheritance is the process of inheriting all the features from a class. The advantages of inheritance are reusability of code and accessibility of variables and methods of the super class by subclasses. 9. What is the difference between superclass and subclass? A super class is a class that is inherited whereas sub class is a class that does the inheriting. 10. What is an abstract class? An abstract class is a class designed with implementation gaps for subclasses to fill in and is deliberately incomplete.
Post a Comment
Read more