what is the difference between service and thread in android?
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Service : is a component of android which performs long running operation in background, mostly with out having UI. Thread : is a O.S level feature that allow you to do some operation in the background.
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Sleep holds the thread's execution for the specified time. When a task is invoked in yielding, it returns to the ready state. When a task is invoked in sleeping, it returns to the waiting state. It is used to get the running thread into out of runnable state with the same priority.
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Most important is to realize that both are singletons in your app, even though the name “factory” might imply differently. Essentially, factories are functions that return the object, while services are constructor functions of the object which are instantiated with the new keyword.
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In an asynchronous interaction, a client sends a request to a service and waits until the service replies. ... Note the difference between this and responding from a synchronous BPEL process: a synchronous BPEL process uses a reply activity to respond to the client and an asynchronous service uses an invoke activity.
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The processes and threads are independent sequences of execution, the typical difference is that threads run in a shared memory space, while processes run in separate memory spaces. Each process is started with a single thread, known as the primary thread. ...
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['wait()-It tells the calling thread to give up the lock and go to sleep until some other thread enters the same monitor and calls notify().', 'notify()-It wakes up one single thread that called wait() on the same object. ... ', 'notifyAll()-It wakes up all the threads that called wait() on the same object.']
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1. Java sleep() and wait() – Discussion. sleep() is a method which is used to pause the process for few seconds or the time we want to. But in case of wait() method, thread goes in waiting state and it won't come back automatically until we call the notify() or notifyAll() .
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What is the difference between a running and runnable process? ... Running the process is executing with everything it needs as well as the CPU. Whereas, runnable the process is on a run query and is ready-to-run. A runnable process has every resource that it needs to execute except the CPU itself.
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Runnable is an interface which represents a task that could be executed by either a Thread or Executor or some similar means. On the other hand, Thread is a class which creates a new thread. Implementing the Runnable interface doesn't create a new thread. Java Docs clearly explains the difference between them.
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A process is an instance of a particular executable (.exe program file) running. A service is a process which runs in the background and does not interact with the desktop. ... Sometimes, processes may run in the background without interacting with the desktop, but without being installed as a service.
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The significant differences between extending Thread class and implementing Runnable interface: ... When we extend Thread class, each of our thread creates unique object and associate with it. When we implements Runnable, it shares the same object to multiple threads.
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A thread is an entity within a process that consists of the schedulable part of the process. A fork() duplicates all the threads of a process.
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It separates tasks from execution, this is different from java. lang. Thread class which combines both task and its execution. ... On the other hand, ExecutorService is an extension of the Executor interface and provides a facility for returning a Future object and terminate, or shut down the thread pool.
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The major difference is to wait to release the lock or monitor while sleep doesn't release any lock or monitor while waiting. Wait is used for inter-thread communication while sleep is used to introduce pause on execution.
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Basically synchronous means one can execute many things in parallel. With this respect Stringbuffer in java is synchronous class ie it allows the access of one single method by different threads in a synchronized manner and Stringbuilder is asynchronous aka not thread safe.
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The main difference between API and system call is that API is a set of protocols, routines, and, functions that allow the exchange of data among various applications and devices while a system call is a method that allows a program to request services from the kernel.
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A Windows service is a long-running executable that performs specific functions and which is designed not to require user intervention. A web service is an HTTP interface to a system. ... A Windows Service is a background process that runs without user interaction.