How can I get record count with a query?

In Client/Server pplication,the client send a query to server.
How can server get record count by oracle call interface?
Is it need execute "select count(*) from ...."?

Yes.
Either that or increment a counter for each record fetched and
loop round until you hit the last record.
The first method would be more efficient on large datasets.

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Check out the following url, it should suit ur need.
http://jsptags.com/tags/navigation/pager/pager-taglib-1.1.html
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hope u find it helpful.
keep progRamming,
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class sampleThread extends Thread
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NB: if i write the variable in to a file I am able to read it from external method. This I dont want to do

We want to access a variable from the run method of a
Thread externally in a class or in a method. I presume you mean a member variable of the thread class and not a local variable inside the run() method.
Even
though I make the variable as public /public static, I
could get the value till the end of the run method
only. After that scope of the variable gets lost
resulting to null value in the called method/class..
I find it easier to implement the Runnable interface rather than extending a thread. This allows your class to extend another class (ie if you extend thread you can't extend something else, but if you implement Runnable you have the ability to inherit from something). Here's how I would write it:
public class SampleSynchronisation
public static void main(String[] args)
    SampleSynchronisation app = new SampleSynchronisation();
public SampleSynchronisation()
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    new Thread(runner).start();
    // yield this thread so other thread gets a chance to start
    Thread.yield();
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class MyRunnable implements Runnable
    String X = null;
    // this method called from the controlling thread
    public synchronized String getX()
      return X;
    public void run()
      System.out.println("Inside MyRunnable");
      X = "MyRunnable's data";
} // end class MyRunnable
} // end class SampleSynchronisation>
public class SampleSynchronisation
public static void main(String df[])
sampleThread sathr= new sampleThread();
sathr.start();
System.out.println("This is the value from the run
method "+sathr.x);
// I should get Inside the run method::: But I get
only Inside
class sampleThread extends Thread
public String x="Inside";
public void run()
x+="the run method";
NB: if i write the variable in to a file I am able to
read it from external method. This I dont want to do

How can I get the variable with the value from Thread's run method

We want to access a variable from the run method of a Thread externally in a class or in a method. Even though I make the variable as public /public static, I could get the value till the end of the run method only. After that scope of the variable gets lost resulting to null value in the called method/class..
How can I get the variable with the value?
This is sample code:
public class SampleSynchronisation
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sampleThread sathr= new sampleThread();
sathr.start();
System.out.println("This is the value from the run method "+sathr.x);
/* I should get:
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But I get only:
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class sampleThread extends Thread
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     public void run()
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NB: if i write the variable in to a file I am able to read it from external method. This I dont want to do

Your main thread continues to run after the sathr thread is completed, consequently the output is done before the sathr thread has modified the string. You need to make the main thread pause, this will allow sathr time to run to the point where it will modify the string and then you can print it out. Another way would be to lock the object using a synchronized block to stop the main thread accessing the string until the sathr has finished with it.

How can I get an album with multiple artists to display in my Nano as one album insteadof multiple albums?

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select distinct group_id
from tab_tmp t
where t.group_id not in (select distinct t2.group_id
 from tab_tmp t2
 where t2.colour = 'BLACK');
 GROUP_ID
1 2220052-----
Edited by: stefan nebesnak on Feb 24, 2013 9:02 AM
In the TEST table there are the 'BLUE' and 'GREEN' values together in all cases, which confused me. ツ
<tt>
GROUP_ID COLOUR KEY
--1--
8311226 GREEN 12428183
8311226 BLUE 12428183
8311226 GREEN 35428017
8311226 BLACK 5415875
--2--
2220052 GREEN 12253085
2220052 WHITE 12253085
2220052 BLUE 84553085
--3--
3029178 BLACK 54587856
3029178 BLUE 54587856
3029178 GREEN 67080752
</tt>

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How can I get record count with a query?

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