What does the sync keyword in a method signify?

The sync keyboard is also known as the synchronized keyword. It is a part of the programming language Java. The synchronized keyword is a vital part of Java. The purpose of it is to allow one thread at a time.

Only one thread is allowed into a particular code section. This allows the variables or data to be protected and prevent them from being corrupted by other threads.

Another important feature is that it allows the thread to work with locally cached copies. When this is done, the main copy is updated to suit the other copies. Though often overlooked, this function is equally important.

In Java programming, the async keyword in a method signifies the prevention of thread interference and inconsistency in memory errors. This simply means that the keyword allows only one thread at a time. It makes your threads safe.

The async keyword in a method helps prevent data and variables from being corrupted by modifications from other threads. For instance, if an object is visible to more than a single thread, the write and the reads to the object’s variable will be done through the sync methods.

Bear in mind that every Java object has an associated lock or monitor. The sync method makes the compiler append instructions to access the lock on the object before the code can be executed.