Master

'

s Thesis 2006 

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STUTTGART

TECHNIK

The implementation 

        STUTTGART UNIVERSITY OF APPLIED 

SCIENCES 

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Server 

Server 

Server 

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Edit 

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Main 

Point 

Layer 

Format 

SVGT 

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Viewer 

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&SRS 

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Raster 

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me 

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Fig. 19: 

Interface structure of the client from the users

'

 point of view 

In the developers

'

 shoes, the structure is composed of not only the interface, but also 

several  individual  functions  which  will  run  invisibly  (see  Figure  20).  Java  has  one 

famous wisdom,

  Write Once

Run Anywhere

, but it is also called by somebody,

Write  Once,  Debug  Anywhere

.  That  means  the  more  transplantable,  the  more 

extendable, the  more compatible, the better the codes are. In order to make the code 

more understandable by other programmers, even by the author himself, the structure 

of the code should be clear and easy to modify later. So Oriented Object Programming 

(OOP) method should be used here.   

Simply to say, OOP is a type of programming in which programmers define not only 

the data type of a data structure, but also the types of operations (functions) that can 

be applied to the data structure. In this way, the data structure becomes an object that 

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