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java Programming Glossary: lockDifference between wait() and sleep() http://stackoverflow.com/questions/1036754/difference-between-wait-and-sleep a sleep cannot. Also a wait and notify must happen in a block synchronized on the monitor object whereas sleep does not Object.. the monitor remember that the wait is in a synchronized block and carry on the others will then be blocked until they can.. a synchronized block and carry on the others will then be blocked until they can acquire the monitor's lock. Another point is..
How can I lock a file using java (if possible) http://stackoverflow.com/questions/128038/how-can-i-lock-a-file-using-java-if-possible can I lock a file using java if possible I have a java process that opens.. java file io share improve this question FileChannel.lock is probably what you want. FileInputStream in new FileInputStream.. in new FileInputStream file try java.nio.channels.FileLock lock in.getChannel .lock try Reader reader new InputStreamReader..
Why is Java Vector class considered obsolete or deprecated? http://stackoverflow.com/questions/1386275/why-is-java-vector-class-considered-obsolete-or-deprecated over a Vector for instance you still need to take out a lock to avoid anyone else changing the collection at the same time.. in the iterating thread but also slower why take out a lock repeatedly when once will be enough Of course it also has the.. once will be enough Of course it also has the overhead of locking even when you don't need to. Basically it's a very flawed..
Download a file with Android, and showing the progress in a ProgressDialog http://stackoverflow.com/questions/3028306/download-a-file-with-android-and-showing-the-progress-in-a-progressdialog protected String doInBackground String... sUrl take CPU lock to prevent CPU from going off if the user presses the power.. Service you must manually spawn new threads to run CPU blocking operations . Download service can look like this public class..
Java synchronized static methods: lock on object or class http://stackoverflow.com/questions/437620/java-synchronized-static-methods-lock-on-object-or-class synchronized static methods lock on object or class The Java Tutorials say it is not possible.. has no associated object will the synchronized keyword lock on the class instead of the object java class static methods.. improve this question will the synchronized keyword lock on the class instead of the object Yes. share improve this..
Avoid synchronized(this) in Java? http://stackoverflow.com/questions/442564/avoid-synchronizedthis-in-java synchronized this should be avoided. Instead they claim a lock on a private reference is to be preferred. Some of the given.. of the given reasons are some evil code may steal your lock very popular this one also has an accidentally variant all synchronized.. methods within the same class use the exact same lock which reduces throughput you are unnecessarily exposing too..
How to lock compiled Java classes to prevent decompilation? http://stackoverflow.com/questions/49379/how-to-lock-compiled-java-classes-to-prevent-decompilation to lock compiled Java classes to prevent decompilation How do I lock.. compiled Java classes to prevent decompilation How do I lock compiled Java classes to prevent decompilation I know this must..
Do spurious wakeups actually happen? http://stackoverflow.com/questions/1050592/do-spurious-wakeups-actually-happen public class Spurious public static void main String args Lock lock new ReentrantLock Condition cond lock.newCondition lock.lock.. public static void main String args Lock lock new ReentrantLock Condition cond lock.newCondition lock.lock try try cond.await..
What is the difference between a synchronized method and synchronized block in Java? http://stackoverflow.com/questions/1149928/what-is-the-difference-between-a-synchronized-method-and-synchronized-block-in-j and hence the lock will be of lesser time And in case of Lock on a static method on what is the Lock taken What is the meaning.. time And in case of Lock on a static method on what is the Lock taken What is the meaning of a Lock on Class java multithreading.. method on what is the Lock taken What is the meaning of a Lock on Class java multithreading synchronization share improve..
http://stackoverflow.com/questions/1482282/java-vs-python-on-hadoop Python is also held back by its Global Interpreter Lock meaning it cannot push threads of a single process onto different..
http://stackoverflow.com/questions/2424604/what-is-a-java-classloader from shared objects file Loaded java.lang.Shutdown Lock from shared objects file As you can see the Java runtime classes..
A simple scenario using wait() and notify() in java http://stackoverflow.com/questions/2536692/a-simple-scenario-using-wait-and-notify-in-java T queue new LinkedList T private int capacity private Lock lock new ReentrantLock private Condition notFull lock.newCondition.. T private int capacity private Lock lock new ReentrantLock private Condition notFull lock.newCondition private Condition..
How to programmaticaly lock screen in Android? [duplicate] http://stackoverflow.com/questions/3594532/how-to-programmaticaly-lock-screen-in-android lock screen in Android duplicate Possible Duplicate Lock the android device programatically How can I programmatically.. Check this class com.android.internal.policy.impl.LockScreen Referenced from here http stackoverflow.com questions.. getSystemService Activity.KEYGUARD_SERVICE KeyguardLock lock keyguardManager.newKeyguardLock KEYGUARD_SERVICE For locking..
I don't understand file locking http://stackoverflow.com/questions/4025721/i-dont-understand-file-locking don't understand file locking I've been trying to use FileLock to get exclusive access to a file in order to delete it rename.. java.nio.channels.FileChannel import java.nio.channels.FileLock public abstract class LockedFileOperation public void execute.. import java.nio.channels.FileLock public abstract class LockedFileOperation public void execute File file throws IOException..
http://stackoverflow.com/questions/4201713/synchronization-vs-lock vs Lock java.util.concurrent api provides a class called as Lock which.. Lock java.util.concurrent api provides a class called as Lock which would basically serializes the conntrol in order to access.. locking an object I'd prefer to use synchronized Example Lock.acquire doSomethingNifty Throws a NPE Lock.release Oh noes we..
Interesting uses of sun.misc.Unsafe http://stackoverflow.com/questions/5574241/interesting-uses-of-sun-misc-unsafe VM intrinsification. ie CAS Compare And Swap used in Lock Free Hash Tables eg sun.misc.Unsafe.compareAndSwapInt it can..
http://stackoverflow.com/questions/5639870/simple-java-name-based-locks them on demand. Some pseudo code for what I am thinking is LockManager.acquireLock String name Lock lock synchronized map lock.. pseudo code for what I am thinking is LockManager.acquireLock String name Lock lock synchronized map lock map.get name doesn't.. what I am thinking is LockManager.acquireLock String name Lock lock synchronized map lock map.get name doesn't exist yet create..
Synchronizing on an Integer value [duplicate] http://stackoverflow.com/questions/659915/synchronizing-on-an-integer-value the more elaborate solutions like keeping a WeakHashMap of Lock objects keyed to the int nothing wrong with that it just seems..
Extremely simple code not working in HtmlUnit http://stackoverflow.com/questions/7200886/extremely-simple-code-not-working-in-htmlunit waiting on 0x76af2ff0 a java.lang.ref.ReferenceQueue Lock at java.lang.ref.ReferenceQueue.remove ReferenceQueue.java 118.. 118 locked 0x76af2ff0 a java.lang.ref.ReferenceQueue Lock at java.lang.ref.ReferenceQueue.remove ReferenceQueue.java 134.. Method waiting on 0x7675cc58 a java.lang.ref.Reference Lock at java.lang.Object.wait Object.java 485 at java.lang.ref.Reference..
Why is there no GIL in the Java Virtual Machine? Why does Python need one so bad? http://stackoverflow.com/questions/991904/why-is-there-no-gil-in-the-java-virtual-machine-why-does-python-need-one-so-bad threads nicely without the need for a Global Interpreter Lock GIL while Python necessitates such an evil. java python multithreading..
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