Multithreading-in app app-Java.pdf (1).pdf

Multithreading-in app app-Java.pdf (1).pdf

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  MULTI-THREADING IN JAVA #Submittedby: P. Vinay -238r1a12q1 IT - D
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  Multithreading in Java Multithreading isa powerful feature in Java that allows a program to execute multiple threads concurrently, improving efficiency and responsiveness. This presentation will explore the benefits, concepts, and best practices of utilizing multithreading in Java development.
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  What is Multithreading? 13 2Concurrent Execution Multithreading enables a single process to have multiple threads running simultaneously, each performing a specific task. Resource Sharing Threads within a process share the same memory space, allowing efficient utilization of system resources. Improved Responsiveness Multithreading can enhance the overall responsiveness of an application by allowing it to continue processing other tasks while waiting for a time- consuming operation to complete.
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  Benefits of Multithreading IncreasedEfficiency Multithreading can improve the overall efficiency of a program by utilizing system resources more effectively and reducing idle time. Enhanced Responsiveness By allowing the application to continue processing other tasks while waiting for a time-consuming operation, multithreading can improve the user experience. Scalability Multithreading enables applications to scale more easily, as additional threads can be added to handle increased workloads.
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  Creating Threads inJava Thread Pools Use the java.util.concurrent.ExecutorService to manage a pool of threads, simplifying thread creation and lifecycle management. Extending Thread Class Create a new class that extends the Thread class and override the run() method to define the thread's behavior. Lambda Expressions Leverage Java 8's Lambda expressions to create and start threads concisely. Implementing Runnable Interface Implement the Runnable interface, create a Thread instance, and pass the Runnable implementation to the Thread constructor.
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  Thread Life Cycle 1 2 3 4 5 New Athread is created but not yet started. Running The thread is currently being executed by the JVM. Runnable The thread is eligible for execution and is waiting to be scheduled by the JVM. Blocked/ Waiting The thread is temporarily suspended and cannot run until a certain condition is met. Terminated The thread has completed its task and is no longer active.
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  Thread Synchronization Semaphores Provide a wayto control the number of threads that can access a shared resource simultaneously. Synchronized Methods Ensures that only one thread can access a method at a time, preventing race conditions. Reentrant Locks Offer more flexibility and control over synchronization compared to synchronized methods and blocks. Synchronized Blocks Allows for more granular synchronization, locking specific code blocks instead of entire methods.
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  Deadlocks and Starvation 3 4 2 1 Deadlocks Occur whentwo or more threads are waiting for each other to release resources, leading to a circular dependency. Starvation A situation where a thread is continuously denied access to a shared resource, leading to lack of progress. Fair Scheduling Implementing fair scheduling policies can help mitigate the risk of starvation in multithreaded applications. Resource Allocation Careful management of shared resources and the order in which they are acquired can help prevent deadlocks.
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  Best Practices andConsiderations 1 3 4 Utilize Thread Pools Use thread pools to manage the lifecycle of threads, improving performance and reducing resource consumption. Avoid Deadlocks Carefully design the resource acquisition order and consider using tools like lock hierarchies to prevent deadlocks. Monitor and Debug Implement comprehensive logging and monitoring to quickly identify and resolve multithreading-related issues. 2Minimize Shared Resources Reduce the number of shared resources to minimize the potential for race conditions and synchronization issues.
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  THANK YOU