7. How to share data among multiple threads-jdk5 multithreading

1 /**2 * Discussion on how to share data among multiple threads3  * @authorlitaiqing4  * 5  * *************************************************6 * If each thread executes a different code, this time requires a different runnable object, with7 * There are two ways to achieve data sharing between these runnble objects:8 * 1. Encapsulate the shared data in another object and pass the object to the9 * Individual Runnble objects. Each thread's method of manipulating shared data is also assigned to that object.Ten * go up and finish, so it's easy to achieve mutual exclusion and communication for each operation on the data.  One * 2. Use these runnable objects as internal classes in a class and share the data as A * This is a member variable in the external class, and each thread also assigns an action method to the shared data to the external class . - * In order to achieve mutual exclusion and communication of various operations on shared data, as individual runnble of internal classes - * Objects call these methods of the external class.  the * Combination of the above two ways: encapsulate shared data in another object, each thread - * The method of sharing data is also assigned to the object to be completed, the object as the outer class of the - * A local variable in a member variable or method, each thread's Runnable object as an outer class - * member inner class or local inner class.  + * In short, the very short code to synchronize mutually exclusive is best placed in several separate methods, these - * methods are then placed in the same class, which makes it easier to synchronize mutual exclusion and communication between them.  +  * ************************************************* A  * at  */ -  Public classMultithreadsharedata { -      -     Private StaticShareData1 data1 =NewShareData1 (); -      -      Public Static voidMain (string[] args) { in          -         FinalShareData1 data2 =NewShareData1 (); to         NewThread (NewMyRunnable1 (data1)). Start (); +         NewThread (NewMyRunnable1 (data2)). Start (); -          the         FinalShareData1 data1 =NewShareData1 (); *         NewThread (NewRunnable () { $ @OverridePanax Notoginseng              Public voidrun () { - data1.decrement (); the             } + }). Start (); A         NewThread (NewRunnable () { the @Override +              Public voidrun () { - data1.increment (); $             } $ }). Start (); -     } -      the      - }Wuyi  the classMyRunnable1Implementsrunnable{ -      Wu     PrivateShareData1 data1; -  About      PublicMyRunnable1 (ShareData1 data1) { $          This. data1 =data1; -     } -      - @Override A      Public voidrun () { + data1.decrement (); the     } - } $  the classMyRunnable2Implementsrunnable{ the      the     PrivateShareData1 data1; the  -      PublicMyRunnable2 (ShareData1 data1) { in          This. data1 =data1; the     } the      About @Override the      Public voidrun () { the data1.increment (); the     } + } -  the classShareData1/*implements Runnable*/{Bayi      the     Private intCount = 100; the      -     Private intj = 0; -      Public synchronized voidincrement () { theJ + +; the     } the      Public synchronized voidDecrement () { thej--; -     } the //@Override the //Public void Run () { the //While (true) {94 //count--; the //        } the //    } the     98}

7. How to share data among multiple threads-jdk5 multithreading