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low cost private java hosting low cost private java hosting That's because the print method must be called by a specific instance of the website class, and this instance knows what its data is. Or, another way of looking at it, the every object has its own print method. The print() method is completely enclosed within the website class. All methods in Java must belong to a class. Unlike C++ programs, Java programs cannot have a method hanging around in global space that does everything you forgot to do in your classes.

low cost private java hosting ConstructorsThe first method most classes need is a constructor. A constructor creates a new instance of the class. It initializes all the variables and does any work necessary to prepare the class to be used. In the line website x = new website(); website() is a constructor. If no constructor exists Java provides a default one, but it's better to make sure you have your own.

low cost private java hosting You make a constructor by writing a public method that has the same name as the class. Thus our website constructor is called website(). Here's a revised website class with a constructor that initializes all the members to null Strings.class website { String name; String url; String description; public website() { name = ""; url = ""; description = ""; }} Better yet, we should create a constructor that accepts three Strings as arguments and uses those to initialize the member variables like so:class website { String name; String url; String description; public website(String n, String u, String d) { name = n; url = u; description = d; }} We'd use this like so: website x = new website("Cafe Au Lait", "http://metalab.unc.

low cost private java hosting edu/javafaq/", "Really cool!"); x.print(); This fits in well with the goal of keeping code relevant to the proper functioning of a class within the class.However what if sometimes when we want to create a web site we know the URL, name, and description, and sometimes we don't? Best of all, let's use both!class website { String name; String url; String description; public website(String n, String u, String d) { name = n; url = u; description = d; } public website() { name = ""; url = ""; description = ""; }} This is called method overloading or polymorphism. Polymorphism is a feature of object oriented languages that lets one name refer to different methods depending on context. The important context is typically the number and type of arguments to the method.

low cost private java hosting

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