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a class invariant is a condition that describes all valid states for an object it is a logical condition to make sure the correct working of a class
it is an object of a number of classes whose purpose is to indicate that a real object of that class does not exist one common use for a null object
a class that has no functionality of its own is an adaptor class in c its member functions hide the use of a third party software component or an
message in c objects converse by sending messages to each other a message is sent to invoke a method in c method in c gives response to a message
a using declaration in c makes it likely to use a name from a namespace without the scope
an accessor is a class operation that does not change the state of an object in c the access or functions require to be declared as const operations
the standard c library function is removing this is thus one of the few questions in this section for which the answer is not its system-dependent on
on many systems you can describe a function matherr which will be known as when there are certain floating-point errors like errors in the math
these days theyre pretty much obsolete theyre definitely system-particular they had to do with 16-bit programming under ms-dos and perhaps some early
which is more efficient a switch statement or an if else chainans the differences if any are likely to be small the switch statement was designed to
no c dont have circular shift operator part of the reason why that is the sizes of cs types arent precisely described----but a circular shift makes
its not trivial to execute nested functions such that they have the proper access to local variables in the having functions so they were
the c programming language is a standardized programming language forrned in the early 1970s by ken thompson and dennis ritchie for use on the unix
a scrollbar is a component but not a container while scrollpane is a container and handles its own events and do its own scrolling
they are light weight components that do no painting but can take space in the gui this is mainly used for layout management
realized mean that the component has been painted on screen or that is prepared to be painted realization can take place by invoking any of these
swt standard widget toolkit is a totally independent graphical user interface gui toolkit from ibm they formed it for the creation of eclipse
converter is an application that converts distance measurements among metric and us units
the enableevents method is used to enable an event for a certain object normally an event is enabled when a listener is added to an object for a
the frame class extends window to describe a main application window that can have a menu bar a window can be
java uses layout managers to lay out components in a consistent manner across all windowing platforms as javas layout managers arent tied to absolute
this method is used to make sure that swing components are updated by the event-dispatching thread
when a window is repainted by the awt painting thread it sets the clipping regions to the area of the window that needs repainting
a canvas object gives access to a graphics object by its paint method