By Scott Oaks, Henry Wong
ISBN-10: 1565924185
ISBN-13: 9781565924185
Threads should not a brand new notion: many working structures and languages help them. yet regardless of frequent help, threads are typically anything that everybody talks approximately, yet few use. Programming with threads has a name for being tough and nonportable.Not so with Java. Java's thread amenities are effortless to take advantage of, and - like every little thing else in Java - are thoroughly transportable among systems. and that is an exceptional factor, simply because it really is very unlikely to jot down something however the easiest applet with no encountering threads. so that it will paintings with Java, you'll want to find out about threads.This re-creation exhibits you ways to take complete benefit of Java's thread amenities: the place to take advantage of threads to extend potency, the best way to use them successfully, and the way to prevent universal mistakes.Java Threads, second variation discusses difficulties like impasse, race , and hunger intimately, aiding you to write down code with no hidden insects. It brings you brand new with the newest adjustments within the thread interface for JDK 1.2.The ebook deals a radical dialogue of the Thread and ThreadGroup periods, the Runnable interface, the language's synchronized operator. It explains thread scheduling ends by way of constructing a CPUSchedule classification, displaying you ways to enforce your personal scheduling coverage. moreover, Java Threads, second variation indicates you ways to increase Java's thread primitives. different prolonged examples contain sessions that enforce reader/writer locks, normal locks, locks at arbitrary scope, and asynchronous I/O. This version additionally provides large examples on thread swimming pools, complex synchronization method, like situation variables, boundaries, and daemon locks. It indicates easy methods to paintings with sessions that aren't thread secure, and can pay specific awareness to threading concerns with Swing. a brand new bankruptcy exhibits you ways to write down parallel code for multiprocessor machines.In brief, Java Threads, 2d variation covers every little thing you must find out about threads, from the easiest animation applet to the main advanced functions. in the event you plan to do any severe paintings in Java, you can find this publication helpful. Examples on hand on-line. Covers Java 2.
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Extra info for Java Threads
Example text
4. The socket thread calls the appendResult() method to append the character to the result StringBuffer. 5. The applet thread assigns result to a new (empty) StringBuffer. The data that was appended to the StringBuffer in step 4 is now lost: it wasn't retrieved by the applet thread at step 2, and the applet thread discards the old StringBuffer in step 5. Note that there is another race condition here: if two separate threads call the getResult() method at the same time, they could both get copies of the same data from the StringBuffer, and that data would be processed twice.
This may seem obvious, but it should be noted that a race condition would have resulted if the join() method had required that the thread be alive when the method was first called. The Stopping Thread and the Garbage Collector The thread object, like any other object, is a candidate for garbage collection when it gets dereferenced. As developers, we should just note that the garbage collector behaves correctly with the threading system and not worry about the exact details. However, for those of us who are detail-oriented, here is how the garbage collector behaves with the threading system.
So how does synchronization of static methods work? To answer this question, we will introduce the concept of a class lock. Just as there is an object lock that can be obtained for each instance of a class (object), there is a lock that can be obtained for each class. We will refer to this as the class lock .
Java Threads by Scott Oaks, Henry Wong
by Kenneth
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