code: // from gee.cs.oswego.edu/home/jsr166/jsr166
  
  package jsr166tests.jtreg.util.concurrent.Executors;
  
  /*
   * Copyright 2006 Sun Microsystems, Inc.  All Rights Reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
   *
   * This code is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
   * CA 95054 USA or visit www.sun.com if you need additional information or
   * have any questions.
   */
  
  /*
   * @test
   * @bug 6398290
   * @summary Check Executors/STPE Exception specifications
   * @author Martin Buchholz
   */
  
  import java.io.*;
  import java.util.*;
  import java.util.concurrent.*;
  import static java.util.concurrent.Executors.*;
  import java.security.PrivilegedAction;
  import java.security.PrivilegedExceptionAction;
  
  public class Throws {
      private static void realMain(String[] args) throws Throwable {
          final ThreadFactory fac = defaultThreadFactory();
          final ThreadFactory nullFactory = null;
          final RejectedExecutionHandler reh
              = new RejectedExecutionHandler() {
                      public void rejectedExecution(Runnable r,
                                                    ThreadPoolExecutor executor) {}};
          final RejectedExecutionHandler nullHandler = null;
  
          THROWS(
              NullPointerException.class,
              new Fun(){void f(){ newFixedThreadPool(3, null); }},
              new Fun(){void f(){ newCachedThreadPool(null); }},
              new Fun(){void f(){ newSingleThreadScheduledExecutor(null); }},
              new Fun(){void f(){ newScheduledThreadPool(0, null); }},
              new Fun(){void f(){ unconfigurableExecutorService(null); }},
              new Fun(){void f(){ unconfigurableScheduledExecutorService(null); }},
              new Fun(){void f(){ callable(null, "foo"); }},
              new Fun(){void f(){ callable((Runnable) null); }},
              new Fun(){void f(){ callable((PrivilegedAction<?>) null); }},
              new Fun(){void f(){ callable((PrivilegedExceptionAction<?>) null); }},
              new Fun(){void f(){ privilegedCallable((Callable<?>) null); }},
              new Fun(){void f(){ new ScheduledThreadPoolExecutor(0, nullFactory); }},
              new Fun(){void f(){ new ScheduledThreadPoolExecutor(0, nullFactory, reh); }},
              new Fun(){void f(){ new ScheduledThreadPoolExecutor(0, fac, nullHandler); }});
  
          THROWS(
              IllegalArgumentException.class,
              new Fun(){void f(){ newFixedThreadPool(-42); }},
              new Fun(){void f(){ newFixedThreadPool(0)  ; }},
              new Fun(){void f(){ newFixedThreadPool(-42, fac); }},
              new Fun(){void f(){ newFixedThreadPool(0,   fac); }},
              new Fun(){void f(){ newScheduledThreadPool(-42); }},
              new Fun(){void f(){ new ScheduledThreadPoolExecutor(-42); }},
              new Fun(){void f(){ new ScheduledThreadPoolExecutor(-42, reh); }},
              new Fun(){void f(){ new ScheduledThreadPoolExecutor(-42, fac, reh); }});
  
          try { newFixedThreadPool(1).shutdownNow(); pass(); }
          catch (Throwable t) { unexpected(t); }
  
          try { newFixedThreadPool(1, fac).shutdownNow(); pass(); }
          catch (Throwable t) { unexpected(t); }
  
          try { newSingleThreadExecutor().shutdownNow(); pass(); }
          catch (Throwable t) { unexpected(t); }
  
          try { newCachedThreadPool().shutdownNow(); pass(); }
          catch (Throwable t) { unexpected(t); }
  
          try { newSingleThreadScheduledExecutor().shutdownNow(); pass(); }
          catch (Throwable t) { unexpected(t); }
  
          try { newSingleThreadScheduledExecutor(fac).shutdownNow(); pass(); }
          catch (Throwable t) { unexpected(t); }
  
          try { newScheduledThreadPool(0).shutdownNow(); pass(); }
          catch (Throwable t) { unexpected(t); }
  
          try { newScheduledThreadPool(0, fac).shutdownNow(); pass(); }
          catch (Throwable t) { unexpected(t); }
  
          try { new ScheduledThreadPoolExecutor(0).shutdownNow(); pass(); }
          catch (Throwable t) { unexpected(t); }
  
          try { new ScheduledThreadPoolExecutor(0, fac).shutdownNow(); pass(); }
          catch (Throwable t) { unexpected(t); }
  
          try { new ScheduledThreadPoolExecutor(0, fac, reh).shutdownNow(); pass(); }
          catch (Throwable t) { unexpected(t); }
  
      }
  
      //--------------------- Infrastructure ---------------------------
      static volatile int passed = 0, failed = 0;
      static void pass() {passed++;}
      static void fail() {failed++; Thread.dumpStack();}
      static void fail(String msg) {System.out.println(msg); fail();}
      static void unexpected(Throwable t) {failed++; t.printStackTrace();}
      static void check(boolean cond) {if (cond) pass(); else fail();}
      static void equal(Object x, Object y) {
          if (x == null ? y == null : x.equals(y)) pass();
          else fail(x + " not equal to " + y);}
      public static void main(String[] args) throws Throwable {
          try {realMain(args);} catch (Throwable t) {unexpected(t);}
          System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
          if (failed > 0) throw new AssertionError("Some tests failed");}
      private static abstract class Fun {abstract void f() throws Throwable;}
      static void THROWS(Class<? extends Throwable> k, Fun... fs) {
          for (Fun f : fs)
              try { f.f(); fail("Expected " + k.getName() + " not thrown"); }
              catch (Throwable t) {
                  if (k.isAssignableFrom(t.getClass())) pass();
                  else unexpected(t);}}
  }
  