java thread shared variable example

end of a thread, which frees up memory more quickly, without calling or, because the associated threadlocal variable can be automatically released after the thread has finished. Threadlocal's application scenario:Order Processing consists of a series of operations: reducing inventory levels, add a water account, modify the general ledger, these operations to be

Thread-wide shared data, more commonly used in Java EE, less AndroidA thread calls A,b,c three modules, and the expression or variable call in the module accesses a data that can be staticAnother thread also calls A,b,c three modu

Shared variables for java multi-thread Communication(1) when accessing the Common Code: You can use the same Runnable object, which contains the shared data, such as the ticket selling system. Or the shared data is encapsulated in an object, and the object is locked. This ca

(this) synchronization code block in the same object, only one thread can be executed within a single time. The other thread must wait for the current thread to finish executing the block before it can execute the code block.2. However, when one thread accesses one synchronized (this) of an object to synchronize a blo

thread-wide shared data, more commonly used in Java EE, less AndroidA thread calls A,b,c three modules, and the expression or variable call in the module accesses a data that can be staticAnother thread also calls A,b,c three modu

Shared data within the Java thread rangeShared data within the thread range, which is commonly used in JavaEE, and less in AndroidA thread calls three modules A, B, and C. The expressions or variables in the module call to access A data. The data can be static.Another

); Threaddata.put (Thread.CurrentThread (), data); NewA (). get (); NewB (). get (); }}). Start (); } } Static classa{ Public voidget () {intdata =Threaddata.get (Thread.CurrentThread ()); System.out.println ("A from" +Thread.CurrentThread (). GetName ()+ "Get data:" +data); } } Static classb{ Public voidget () {intdata =Threaddata.get (Thread.CurrentThread ()); System.out.println ("B from" +Thread.CurrentThread (). GetName ()+ "Get data:" +data); }

The effect to be implemented for a thread-wide shared variable is: Share variables within the same thread among multiple objects demo for thread sharing variable not implemented: Package cn.itcast.heima2; Import Java.util.Hash

( String.format("[monitor] [%d/%d] Active: %d, Completed: %d, Task: %d, isShutdown: %s, isTerminated: %s", this.executor.getPoolSize(), this.executor.getCorePoolSize(), this.executor.getActiveCount(), this.executor.getCompletedTaskCount(), this.executor.getTaskCount(), this.executor.isShutdown(), this.executor.isTermin

;ImportJava.util.Random; Public classThreadscopesharedata {Private Static intdata = 0; Static Long[] seed =New Long[] {12345612, 654321 }; Private StaticHashmapNewHashmap(); Public Static voidMain (string[] args) {NewThread (Newthreadscopesharedata.myrunnable () {@Override Public voidrun () {//TODO auto-generated Method Stubdata =MyRunnable.rd.nextInt (); System.out.println (Thread.CurrentThread (). GetName ()+ "has put data:" +data); Threaddata.put (Thread.CurrentThread (), data

moment.Note: (1) in Java, the object is judged by the same object using the address . The same address is the same object, the above three is the same object.(2) It is not possible to replace an object instance shared in the above example with a basic data type. Because the basic data type program is automatically initialized with default values, which are decla

Preface: The work will use threadlocal, first study summarizes a wave. There is no place to welcome comments to point out. DefinedThreadlocal is not a thread, but a local variable of thread. These variables are different from their ordinary counterparts, because each thread that accesses a