Font Formatting
A word processor uses the following code for defining font format:
class FontFormat inherits Object
private fontName : String
private fontSize : Int
public constructor(name : String, size : Int)
fontName = name
fontSize = size
end constructor
public function getFontName() : String
return fontName
end function
public function getFontSize() : Int
return fontSize
end function
override public function equals(obj : Object) : Bool
if (!(obj instanceof FontFormat))
return false
end if
FontFormat f = (FontFormat)obj
return f.getFontName() == fontName && f.getFontSize() == fontSize
end function
override public function getHashCode() : Int
return fontName.getHashCode() ^ fontSize.getHashCode()
end function
end class
Analysis shows that even the largest documents use fewer than a hundred different combinations of font name and size. The same analysis shows that the application sometimes uses thousands of FontFormat objects, most of which share the same font name and size.
(Fill in the blank with the software design pattern that solves the issue.)
The
software design pattern can be used to minimize the memory footprint by sharing FontFormat objects.Tags
- OOP & Design Patterns
- Design Patterns
- Structural Patterns
- Public
- Hard
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