Thread pool using java.util.concurrent packages

SharedTaskExecutor.java

package jp.youtalk;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;

public class SharedTaskExecutor {
  private static ExecutorService EXECUTORS =
    Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors() + 1);

  public static synchronized void executeTask(Runnable r) {
    EXECUTORS.execute(r);
  }

  public static synchronized  Future executeTask(Callable c) {
    return EXECUTORS.submit(c);
  }

  private SharedTaskExecutor() {}

  public static void main(String[] args) {
    SharedTaskExecutor.executeTask(new Runnable() {
        @Override
          public void run() {
          // do something
        }
      });
    Future result = SharedTaskExecutor.executeTask(new Callable() {
        @Overridepublic Boolean call() throws Exception {
          return true;
        }
      });
  }
}