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What is adapter in programming language?
An adapter is a class that subclasses a commonly used class or interface with reasonable default functions provided. For example, the WindowAdapter provides a quick solution that provides default do-nothing functions for 4 common interfaces that a GUI would use. Typically, a developer only needs one or two functions from WindowEvent, for example, but without an adapter, they are required to implement seven functions (with five or six of them "do-nothing" functions), instead of just using an adapter and providing the one or two function bodies they do need.
What is the difference between auto int a and int a?
Nothing: 'auto' is usable only in functions, and there it is the default storage class, so you don't have to use it at all.
Why Member functions are not virtual by default?
It depends which language you are using. Java member functions are virtual by default but C++ member functions are not. Java takes the viewpoint that if any member function is declared virtual then all member functions should be declared virtual, so they may as well be virtual by default. However, C++ takes the view that a member function should only be declared virtual if there's a specific reason to declare it virtual. Not all functions are meant to be overridden. Indeed, not all classes are meant to act as base classes. So all member functions are non-virtual by default. Purists will argue that the C++ method is the correct method. After all, there's no point in having a virtual-table if it's never going to be used. Java places the onus on the programmer to eliminate an unused virtual-table, whereas C++ simply doesn't provide one unless you explicitly declare one. However, the real reason C++ uses non-virtual methods by default is because it has to maintain compatibility with a C struct. A C struct is not a class so it has no methods (and therefore no virtual methods). It is a "plain-old-data" or POD structure. In C++, however, a struct is a class. As such, by default, it has a compiler-generated default constructor, default copy and move constructors, default copy and move assignment operators and a default destructor. It also has public access by default. However, because the compiler-generated methods are all trivial member-wise implementations, a C++ struct is backwardly compatible with a POD. Thus C code can use a C++ struct just as if it were a C struct, because both use POD structures by default. If C++ used virtual member functions by default, a struct would not be a POD by default, it would be a base class by default.
Is it ever necessary to add extends Object to a class declaration?
No; that is the default. In other words, if you don't add "extends", the class will automatically inherit from the "Object" class.No; that is the default. In other words, if you don't add "extends", the class will automatically inherit from the "Object" class.No; that is the default. In other words, if you don't add "extends", the class will automatically inherit from the "Object" class.No; that is the default. In other words, if you don't add "extends", the class will automatically inherit from the "Object" class.
What is default object in java?
I don't think there is such a thing as a "default object". The default class, for inheritance purposes, is called "Object".
By default functions will be the static storage class?
No, you have to make them static explicitly.
What is the default subnet mask of a class A address?
Class A default is 255.0.0.0 Class B default is 255.255.0.0 Class C default is 255.255.255.0
When class will be used and when structure will be used?
In class default members are private and in structure default members are public ,When ever you want to hide data from outside functions then you can use class.But in ANSI C we can hide data by using private access specifier.
What is default subnet mask for a class b address?
255.255.0.0255.255.0.0 is the default for a class B address
What is adapter in programming language?
An adapter is a class that subclasses a commonly used class or interface with reasonable default functions provided. For example, the WindowAdapter provides a quick solution that provides default do-nothing functions for 4 common interfaces that a GUI would use. Typically, a developer only needs one or two functions from WindowEvent, for example, but without an adapter, they are required to implement seven functions (with five or six of them "do-nothing" functions), instead of just using an adapter and providing the one or two function bodies they do need.
What language is Adaptation in?
An adapter is a class that subclasses a commonly used class or interface with reasonable default functions provided. For example, the WindowAdapter provides a quick solution that provides default do-nothing functions for 4 common interfaces that a GUI would use. Typically, a developer only needs one or two functions from WindowEvent, for example, but without an adapter, they are required to implement seven functions (with five or six of them "do-nothing" functions), instead of just using an adapter and providing the one or two function bodies they do need.
What is the difference between auto int a and int a?
Nothing: 'auto' is usable only in functions, and there it is the default storage class, so you don't have to use it at all.
What is the default sub-net mask for a class B address?
255.255.0.0255.255.0.0 is the default for a class B address
How a class in java declared default?
default it is public type
What is the default class type of 195.152.12.1?
Class c
What are the default subnet masks for each one of the classes?
The default subnet masks per class are: class A 255.0.0.0 class B 255.255.0.0 class C 255.255.255.0
Why Member functions are not virtual by default?
It depends which language you are using. Java member functions are virtual by default but C++ member functions are not. Java takes the viewpoint that if any member function is declared virtual then all member functions should be declared virtual, so they may as well be virtual by default. However, C++ takes the view that a member function should only be declared virtual if there's a specific reason to declare it virtual. Not all functions are meant to be overridden. Indeed, not all classes are meant to act as base classes. So all member functions are non-virtual by default. Purists will argue that the C++ method is the correct method. After all, there's no point in having a virtual-table if it's never going to be used. Java places the onus on the programmer to eliminate an unused virtual-table, whereas C++ simply doesn't provide one unless you explicitly declare one. However, the real reason C++ uses non-virtual methods by default is because it has to maintain compatibility with a C struct. A C struct is not a class so it has no methods (and therefore no virtual methods). It is a "plain-old-data" or POD structure. In C++, however, a struct is a class. As such, by default, it has a compiler-generated default constructor, default copy and move constructors, default copy and move assignment operators and a default destructor. It also has public access by default. However, because the compiler-generated methods are all trivial member-wise implementations, a C++ struct is backwardly compatible with a POD. Thus C code can use a C++ struct just as if it were a C struct, because both use POD structures by default. If C++ used virtual member functions by default, a struct would not be a POD by default, it would be a base class by default.
