Why use SwingUtilities.invokeLater to interact with Swing components?

SwingUtilities.invokeLater: Executing Code on the Event Dispatching Thread

SwingUtilities.invokeLater provides a mechanism for executing code asynchronously on the AWT event-dispatching thread. This method takes a Runnable object as an argument and schedules it to be executed as soon as the event-dispatching thread becomes idle.

WhatinvokeLater Does:

The purpose of SwingUtilities.invokeLater is to ensure that code that manipulates Swing components is executed in a thread-safe manner. Swing components are not thread-safe, meaning that accessing them from multiple threads simultaneously can lead to unpredictable behavior. By scheduling code to be executed on the event-dispatching thread, SwingUtilities guarantees that any modifications to Swing components are performed in a synchronized and controlled manner.

Difference Between invokeLater and Direct Execution:

Calling an action within the invokeLater function executes the code in a non-blocking manner. The code is scheduled to be executed on the event-dispatching thread, but the current thread continues execution immediately. On the other hand, simply calling the action at the end of the current thread blocks the thread until the action completes.

Reason for Using invokeLater:

In most cases, it is preferable to use SwingUtilities.invokeLater instead of directly calling actions that manipulate Swing components. This ensures that the code is executed on the correct thread and prevents potential thread safety issues.

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