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Can I change JVM parameters at runtime

I am writing a Java program and at some point during runtime I want to change the JVM settings (reduce the heap) and after a while increase it again. Is this possible with Java?

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In short: you cannot. The heap size is fixed after it starts, and there is no way to change it from the code.

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, , , , -Xmx -Xms. : -XX: MaxHeapFreeRatio: (70 , ) , , , GC .

-Xms ( GC), .

, , , GC aka stop-the-world events, .

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Source: https://habr.com/ru/post/1531737/

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