conversations.from: human
conversations.value: Give me a description for a book titled Java Threads and the Concurrency Utilities about Concurrency, Utilities, Java with the genre: Computers & Technology, Programming.
conversations.from: assistant
conversations.value: Threads and the Concurrency Utilities helps all Java developers master the complexity of Java's Thread APIs and Java's Concurrency Utilities. This knowledge aids the Java developer in writing correct and performant multithreaded applications.
conversations.from: human
conversations.value: Give me the first two paragraphs for this book.
conversations.from: assistant
conversations.value: Java Threads and the Concurrency Utilities
  The last point is probably confusing, so here is a simple example where this explicitly escapes from the constructor:
  Check out "Java theory and practice: Safe construction techniques" at www.ibm.com/developerworks/library/j-jtp0618/ to learn more about this common threading hazard.
conversations.from: human
conversations.value: Give me five more paragraphs.
conversations.from: assistant
conversations.value: A runnable for the reader thread is subsequently created. Its run() method repeatedly obtains the read lock, accesses a random entry in the map, outputs this entry, and unlocks the read lock. An executor based on a thread pool is obtained and used to invoke the reader thread's runnable.
  Although I could have avoided the idiom for lock acquisition and release because an exception isn't thrown, I specified try/finally for good form.
  You should observe output that's similar to the following prefix of the output (the message order may differ somewhat) that I observed in one execution:
  What is the biggest advantage that Lock objects hold over the intrinsic locks that are obtained when threads enter critical sections (controlled via the synchronized reserved word)?
  True or false: ReentrantLock's unlock() method throws IllegalMonitorStateException when the calling thread doesn't hold the lock.
conversations.from: human
conversations.value: Give me the last five paragraphs.
conversations.from: assistant
conversations.value: The loadSlides() method looks for a text file named index in the directory identified by this method's string argument and creates the List of Slides in the order identified by this text file's contents--you can choose an order to display slides that differs from the order of the image files stored in the directory. Each line is organized as a file name followed by a comma, which is followed by a textual description (such as earth, Terran System). When specifying a file name, you don't specify a file extension; loadSlides() is hardwired to recognize JPEG files only.
  SlideShow declares a main() method that drives this application. This method first verifies that a single command-line argument identifying the slide show directory (a directory containing index and the JPEG files) has been specified. It then invokes loadSlides() to load index and all slide images from this directory. loadSlides() throws java.io.IOException when it's unable to load an image or when the number of images is less than 2. After all, how can you have a slide show with less than two images?
  The only remaining significant model object to create is the projector, and main() accomplishes this task by passing the List of Slide objects returned from loadSlides() and the previously created Screen object to Projector's constructor.
  Projector uses a pair of Timer objects to manage the slide show. The main timer object is responsible for advancing the projector to the next slide, and the subordinate timer object (which is created each time the main timer fires an action event) is responsible for transitioning from the currently displayed slide image to the next slide's image (with help from blend()).
  Each timer instance runs on the EDT. It's important that the main timer not execute a timer task while the subordinate timer is running. If this rule isn't followed, the slide show will malfunction. I've chosen a period of 3000 milliseconds between successive executions of the main timer task and 10 milliseconds between successive executions of the subordinate timer task, which runs 100 times for an approximate total of 1000 milliseconds. When the subordinate timer task finishes, it stops itself.