what is the difference between synchronous and asynchronous in java?
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Synchronous basically means that you can only execute one thing at a time. Asynchronous means that you can execute multiple things at a time and you don't have to finish executing the current thing in order to move on to next one.
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Synchronous motor is a machine whose rotor speed and the speed of the stator magnetic field is equal. Asynchronous motor is a machine whose rotor rotates at the speed less than the synchronous speed. ... AC Induction Motor is known as the Asynchronous Motor. Synchronous motor does not have slip.
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Promises aren't exactly synchronous or asynchronous in and of themselves. When you create a promise the callback you pass to it is immediately executed and no other code can run until that function yields.
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Synchronous vs. Asynchronous Communication. Synchronous communication means that two or more people exchange information in real-time. ... Asynchronous communication refers to the exchange of data between two or more parties without the requirement for all the recipients to respond immediately.
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The wait() and join() methods are used to pause the current thread. The wait() is used in with notify() and notifyAll() methods, but join() is used in Java to wait until one thread finishes its execution. wait() is mainly used for shared resources, a thread notifies other waiting thread when a resource becomes free.
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Synchronous learning is online or distance education that happens in real time, whereas asynchronous learning occurs through online channels without real-time interaction. Many hybrid learning models will include a blend of both asynchronous and synchronous online learning.
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The synchronized keyword prevents concurrent access to a block of code or object by multiple threads. All the methods of Hashtable are synchronized , so only one thread can execute any of them at a time.
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Difference between yield and sleep in Java. The major difference between yield and sleep in Java is that yield() method pauses the currently executing thread temporarily for giving a chance to the remaining waiting threads of the same priority to execute.
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With GCD, you can dispatch a task either synchronously or asynchronously. ... An asynchronous function returns immediately, ordering the task to start but not waiting for it to complete. Thus, an asynchronous function does not block the current thread of execution from proceeding on to the next function.
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Synchronous vs. On the other hand, networks are inherently asynchronous and in many scenarios it's useful to be able to start RPCs without blocking the current thread. The gRPC programming API in most languages comes in both synchronous and asynchronous flavors.
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In Summary only difference between start() and run() method in Thread is that start creates new thread while run doesn't create any thread and simply execute in current thread like a normal method call. Why wait and notify methods are declared in Object Class?
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For synchronous data transfer, both the sender and receiver access the data according to the same clock. ... For asynchronous data transfer, there is no common clock signal between the sender and receivers. Therefore, the sender and the receiver first need to agree on a data transfer speed.
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Synchronous = happens at the same time. Asynchronous = doesn't happen at the same time. With synchronous learning, participants can receive immediate feedback. With asynchronous learning, the participants can learn at their own pace.
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A Java Future works in a synchronous blocking way. It does not work in an asynchronous non-blocking way, whereas a Scala Future works in an asynchronous non-blocking way.
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A synchronous bus transmits bits of data by using a shared clock signal to synchronize the timing of both the sender and the receiver. ... An asynchronous bus, on the other hand, does not require a common clock signal to be shared between sender and receiver in order to work.
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One of the major differences is that in Synchronous Transmission, the sender and receiver should have synchronized clocks before data transmission. Whereas Asynchronous Transmission does not require a clock, but it adds a parity bit to the data before transmission.
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Static and non-static synchronized method Java. For those who are not familiar static synchronized method locked on class object e.g. for string class, it's String. class while instance synchronized method locks on the current instance of Object denoted by “this” keyword in Java.