subclass

I want to make a custom message box. What I want to customize is the button's text. MessageBoxW( NULL, L"Target folder already exists. Do you want to overwrite the folder?", L"No title", MB_YESNOCANCEL | MB_ICONQUESTION ); I'd like to just change the buttons text to Overwrite , Skip , Cancel . What's the most simple way? I have to make this as having same look and feel with Windows default messagebox. As said by others, a typical way is to create a dialog resource and have a completely independent dialog, which GUI you need to design in the way that it looks like standard dialog (to meet your

Suppose I have a method in a Java class, and I don't want any subclass of that class to be able to override that method. Can I do that? You can declare the method to be final , as in: public final String getId() { ... } For more info, see http://docs.oracle.com/javase/tutorial/java/IandI/final.html Simply make the method final . If your method is not part of your builded API and isn't directly called by subclasses, prefer simply making your method private . If your class hierarchy is contained in a single package, make your method in package scope (without keyword of scoping). Thus, only

In my backing-bean I have a collection of objects of different subclasses sharing a common interface. Inside the view, an ui:repeat iterates over this collection. Inside this loop, different properties have to be rendered depending on the concrete implementation of the interface. I reduced the problem to the following backing bean: @Named @SessionScoped public class DummyBean implements Serializable { private List<Type> objects = new ArrayList<Type>(); public void add1() { objects.add(new Type1()); } public void add2() { objects.add(new Type2()); } public void remove(Type o) { objects.remove(o

I have a set of data in which I need to code values of certain variables (numeric) into 3 classes. My data set is similar to this but has 60 more variables: anim <- c(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15) wt <- c(181,179,180.5,201,201.5,245,246.4,189.3,301,354,369,205,199,394,231.3) data <- data.frame(anim,wt) > data anim wt 1 1 181.0 2 2 179.0 3 3 180.5 4 4 201.0 5 5 201.5 6 6 245.0 7 7 246.4 8 8 189.3 9 9 301.0 10 10 354.0 11 11 369.0 12 12 205.0 13 13 199.0 14 14 394.0 15 15 231.3 I need to code values of the variable "wt" up into 3 classes: (wt >= 179 & wt < 200) = 1; (wt >= 200 & wt < 300)

With an abstract class I want to define a method that returns "this" for the subclasses: public abstract class Foo { ... public <T extends Foo> T eat(String eatCake) { ... return this; } } public class CakeEater extends Foo {} I want to be able to do things like: CakeEater phil = new CakeEater(); phil.eat("wacky cake").eat("chocolate cake").eat("banana bread"); Arguably banana bread would throw an IllegalArgumentException with the message "Not a cake!" public abstract class Foo<T extends Foo<T>> // see ColinD's comment { public T eat(String eatCake) { return (T)this; } } public class CakeEater

In the Python data model reference section on slots there is a list of notes on using __slots__ . I am thoroughly confused by the 1st and 6th items, because they seem to be contradicting each other. First item: When inheriting from a class without __slots__ , the __dict__ attribute of that class will always be accessible, so a __slots__ definition in the subclass is meaningless. Sixth item: The action of a __slots__ declaration is limited to the class where it is defined. As a result, subclasses will have a __dict__ unless they also define __slots__ (which must only contain names of any

I made a subclass of UIView that has a fixed frame. So, can I just override init instead of initWithFrame: ? E.g.: - (id)init { if ((self = [super initWithFrame:[[UIScreen mainScreen] bounds]])) { self.backgroundColor = [UIColor clearColor]; } return self; } The Xcode documentation for -initWithFrame: says: "If you create a view object programmatically, this method is the designated initializer for the UIView class. Subclasses can override this method to perform any custom initialization but must call super at the beginning of their implementation." What does "designated initializer" mean?