Hi,

I can call my compute() may times (event from GUI triggers it). How can
I check how many threads that are running at the same time? ( I have to
print that to a panel.

cheers,

//mikael

My code
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public void compute(String numerator, String denominator) {
        CalcData data = new CalcData();
        data.setN(numerator);
        data.setD(denominator);
        // My Runnable class
        Calculation calc = new Calculation(data);
        // Create a new thread
       
       
        Thread calcThread = new Thread(calc, "Calculation");
        calcThread.start();

        // Wait for the thread to finish but don't wait longer than a
        // specified time
        long delayMillis = 20000; // since max is 15 seconds delay in
                                    // calculation
        try {
            calcThread.join(delayMillis);

            if (calcThread.isAlive()) {
                // Timeout occurred; thread has not finished
            } else {
                // Finished
            }
        } catch (InterruptedException e) {
            // Thread was interrupted
        }
        // wait for theard to finnish before we can fireUpdateOccurred.
        fireUpdateOccurred(new UpdateEvent(this, calc.data));

    }