Question

Is it true that it is undesirable to create more than 10 additional threads?
Example:

for(int i=0; i<100; i++) {
    new Thread() {
        public void run() {
            // something
        }
    }.start();
}

that will create and start 100 threads. That is not good, right?

UPDATE > Every thread are downloading something and put it into the bundle

Answer 1

It is undesirable to create more thread than you need.

Of course if you need 100 threads, then that is a good number to create.

No idea where you get it is undesirable to create more than 10 additional threads from. Java processes can handle 10,000 threads.