### Question:
PhaserServiceBarrier implements IServiceBarrier { @Override public void terminate() { phaser.forceTermination(); } PhaserServiceBarrier( );  PhaserServiceBarrier( String serviceId ); @Override int hold(); @Override int release(); @Override int getHoldCount(); @Override boolean isAvailable(); @Override int awaitAvailability(); @Override void terminate(); @Override boolean isTerminated();  }### Answer:
@Test public void testTerminate() throws Exception { assertTrue( barrier.isAvailable() ); final AtomicBoolean locked = new AtomicBoolean( false ); final AtomicBoolean threwException = new AtomicBoolean( false ); Thread t1 = new Thread( new Runnable() { @Override public void run() { barrier.hold(); locked.set( true ); try { barrier.awaitAvailability(); } catch ( InterruptedException e ) { threwException.set( true ); return; } locked.set( false ); } } ); t1.start(); Thread.sleep( 100 ); assertTrue( locked.get() ); assertTrue( t1.getState() == Thread.State.WAITING ); barrier.terminate(); Thread.sleep( 100 ); assertTrue( locked.get() ); assertTrue( threwException.get() ); assertTrue( barrier.isTerminated() ); }