Whats the difference between these types of classes?

What's the difference between using a "private inner class", an "anonymous inner class", and a "class that implements on itself" to create a GUI?
Also, what's the difference between regular classes, abstract classes, and interfaces?
I ask because I'm an excellent coder, but have trouble understanding the terminology behind the code and also explaining the code.

hi,
First of all your questions are beyond the scope of this forum ...
They are much general about the java syntax of oop.
So read tutorials about the java programming language.
http://en.wikipedia.org/wiki/Java_syntax
Olek

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Whats the difference between these two queries ? - for tuning purpose

Whats the difference between these two queries ?
I have huge amount of data for each table. its takeing such a long time (>5-6hrs).
here whice one is fast / do we have any other option there apart from listed here....
QUERY 1:
SELECT --<< USING INDEX >>
      field1, field2, field3, sum( case when field4 in (1,2) then 1 when field4 in (3,4) then -1 else 0 end)
    FROM
      tab1 inner join tab2 on condition1 inner join tab3 on condition2 inner join tab4 on conditon3
    WHERE
     condition4..10 and
    GROUP BY
      field1, field2,field3
    HAVING
      sum( case when field4 in (1,2) then 1 when field4 in (3,4) then -1 else 0 end) <> 0;
QUERY 2:
   SELECT --<< USING INDEX >>
      field1, field2, field3, sum( decode(field4, 1, 1, 2, 1, 3, -1, 4, -1 ,0))
    FROM
      tab1, tab2, tab3, tab4
    WHERE
     condition1 and
     condition2 and
     condition3 and
     condition4..10
    GROUP BY
      field1, field2,field3
    HAVING
      sum( decode(field4, 1, 1, 2, 1, 3, -1, 4, -1 ,0)) <> 0;
[pre]

My feeling here is that simply changing join syntax and case vs decode issues is not going to give any significant improvement in performance, and as Tubby points out, there is not a lot to go on. I think you are going to have to investigate things along the line of parallel query and index vs full table scans as well any number of performance tuning methods before you will see any significant gains. I would start with the Performance Manual as a start and then follow that up with the hard yards of query plans and stats.
Alternatively, you could just set the gofast parameter to TRUE and everything will be all right.
Andre

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Note: You will have to translate these pages into english
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Link two:
[65226001BA01A12] ราคาพิเศษ จำหน่าย Photoshop CC ALL Multiple Platforms Multi Asian Languages Licensing Subscription Mo…
I've attached screenshots too

The features in both of the Photoshop CC are identical, there is a difference in price because, the higher priced is the original Photoshop price, the less priced is the promotional priced Photoshop CC eligible only if you have CS3 or later version of Adobe creative suite product.
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Whats the difference between these products ?

Hi,
can somebody tell me what's the difference between these products ?
Support Portal - Installations and Upgrades - Entry by Application Group - AP BusinessObjects portfolio:
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Martin Sautter

Hi,
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H

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Did you search in the documentation ?
http://www.oracle.com/webapps/online-help/forms/10g/state?oldNavSetId=_&oldNavId=2&navId=2&vtTopicFile=&navSetId=_&value=1&sPhrase=&action=search&locale=&searchType=simple&phrase=sqlcode&event=update&source=
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My feeling here is that simply changing join syntax and case vs decode issues is not going to give any significant improvement in performance, and as Tubby points out, there is not a lot to go on. I think you are going to have to investigate things along the line of parallel query and index vs full table scans as well any number of performance tuning methods before you will see any significant gains. I would start with the Performance Manual as a start and then follow that up with the hard yards of query plans and stats.
Alternatively, you could just set the gofast parameter to TRUE and everything will be all right.
Andre

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.-**Click the star under my name if this information helped! TY!**-.
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http://search.java.sun.com/search/java/index.jsp?col=javaforums&qp=%2Bforum%3A31&qt=Difference+between+interface+and+class

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Whats the difference between these types of classes?

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