Java Multi Threading Control

Question

I am using this code to create threads.

      while ((strLine = br.readLine()) != null) {
                r = new runnable(strLine);
                new Thread(r).start();
                x++;
                Thread.sleep(100);
      }

How can I control the maximum number of threads running at any point of time? This code has issues where memory used keeps rising(memory leak) is there a better way to do this? I tried using scheduler but didnt help.

dlev · Accepted Answer · 2011-05-21 05:22:00Z

10

You can use an ExecutorService to create constrained thread pools.

ExecutorService executor = Executors.newFixedThreadPool(10);

will create a pool with 10 available threads. You can then call

executor.submit(new Runnable() { ... })

for each unit of work.

EDIT: I should note that this facility is only available in Java 1.5 and later.

edited May 21, 2011 at 5:22

answered May 21, 2011 at 5:11

dlev

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