Difference between start() and run() method in Java | Giri's Tech Hub | Java смотреть онлайн

Difference between start() and run() method in Java | Giri's Tech Hub | Java

The start() and run() methods in Java are both used to execute a thread. However, there are some important differences between the two methods.

The start() method is used to create a new thread and then start executing the run() method in the new thread. The run() method is the method that contains the code that will be executed by the thread.

The run() method, on the other hand, can be called directly on an existing thread. When the run() method is called directly, the code in the run() method will be executed in the current thread.

Another important difference between the start() and run() methods is that the start() method can only be called once on a thread, while the run() method can be called multiple times. If the start() method is called twice on the same thread, an IllegalStateException will be thrown.

Here is a table that summarizes the key differences between the start() and run() methods:

| Method | Description |
|---|---|---|
| start() | Creates a new thread and then starts executing the run() method in the new thread. |
| run() | Executes the code in the run() method in the current thread. |
| Can be called once | Yes |
| Can be called multiple times | Yes |

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