What potential issues can arise when calling the System.gc() method in Java?

Calling the System.gc() method in Java only suggests to the JVM to perform garbage collection, but does not guarantee its immediate or any execution. Main challenges:

• Unpredictable timing — the garbage collector may ignore the call.
• Potential delays in application operation — if garbage collection runs, it can cause pauses.
• Unreliability for memory management — System.gc() cannot be used for precise control over resource release.

Therefore, it is better to rely on the automatic operation of the garbage collector and optimize the code to avoid the need for forced calls to System.gc().