Java - What is synchronization and why is it important

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What is synchronization and why is it important

With respect to multithreading, synchronization is the capability to control the access ofmultiple threads to shared resources. Without synchronization, it is possible for onethread to modify a shared object while another thread is in the process of using orupdating that object's value. This often leads to significant errors.

Total Answers and Comments: 7

Last Update: November 08, 2007

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Submitted by: ravikant

Well Synchronization is the way to make our program safe. It is used in multithreading. As we know when we have two or more threads that share a common code there can be some problem like inconsistent of data if one thread is updating data in that code. so if we make that sharable code(common code) synchronized then its ensured that at a given time only one thread will be having rights to access that code. other threads can't access the code untill its free that is not being used by other thread. hope your point is clear now.

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Lokesh M, freeman76

July 26, 2005 03:37:25

javid

RE: What is synchronization and why is it important

can u give me more information on syncronization and deadlocks and the practical usage of that.

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August 27, 2005 03:54:41

RANJEET KUMAR RAVI

RE: What is synchronization and why is it important

threads share monitor(critical section) and only one thread can have monitor at a time.hence synchronization is important so that no other thread
attemp to hold the monitor.

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September 14, 2005 02:14:21

ravikant

RE: What is synchronization and why is it important

Well Synchronization is the way to make our program safe. It is used in multithreading. As we know when we have two or more threads that share a common code there can be some problem like inconsistent of data if one thread is updating data in that code. so if we make that sharable code(common code) synchronized then its ensured that at a given time only one thread will be having rights to access that code. other threads can't access the code untill its free that is not being used by other thread. hope your point is clear now.

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September 29, 2005 06:31:59

Anu Patreddy

RE: What is synchronization and why is it important

Synchronization is a process of letting one thread to access the method while all other thread are waiting, which avoids deadlock.

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November 09, 2005 05:04:29

Devidas Sonawane

RE: What is synchronization and why is it important

Synchronization is the safe mechanism for memory leakage problem. In which we can modify one thread to complete another thread's process and then executes other.

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September 13, 2007 05:31:29

priya

RE: What is synchronization and why is it important

Synchronisation is a phenomenon in multithreaded programming which enforce synchronicity when we need it. For eg, if we want two threads to share a complicated datastructureÂ we need to ensure that they dont conflict with each other. That isÂ we must prevent one thread from writing data while the other is in the middle of reading it. For this process, Java uses the concept of monitor. The monitor is a control mechanism and it is like a small box that can hold only one thread. Once a thread enters the monitor, all other threads must wait until it remains in that box (monitor). In Java each object has its own implicit monitor that is entered when the object's synchronised method is called. Once a thread is inside a synchronised method, no other thread can call any other synchronised method on the same object.

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November 08, 2007 09:01:58

bijuleo

Member Since: September 2005 Contribution: 2

RE: What is synchronization and why is it important

Synchronization is the mechanism that ensures that only one thread is accessed the resources at a time. In a practical point of view assume that two threads are trying to update bank balance at the same time!!! How we can solve this issue the answer is sychronization. Hope you got the importance

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