Which JVM option sets the maximum heap size?

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Multiple Choice

Which JVM option sets the maximum heap size?

Explanation:
The option that controls how much memory the JVM is allowed to use for its heap at runtime is the one that sets the maximum heap size. By specifying -Xmx, you define an upper limit (for example, -Xmx2g means the heap can grow to at most 2 gigabytes). This ceiling is what prevents the heap from growing indefinitely and helps protect the system from running out of memory. In contrast, -Xms sets the initial amount of heap allocated at startup, -Xmn designates the size of the young generation, and -XX:NewRatio adjusts the proportion between the young and old generations. Tuning -Xms together with -Xmx can reduce pauses caused by heap resizing, aiding GC performance, while the other options influence where and how garbage collection occurs within the heap.

The option that controls how much memory the JVM is allowed to use for its heap at runtime is the one that sets the maximum heap size. By specifying -Xmx, you define an upper limit (for example, -Xmx2g means the heap can grow to at most 2 gigabytes). This ceiling is what prevents the heap from growing indefinitely and helps protect the system from running out of memory.

In contrast, -Xms sets the initial amount of heap allocated at startup, -Xmn designates the size of the young generation, and -XX:NewRatio adjusts the proportion between the young and old generations. Tuning -Xms together with -Xmx can reduce pauses caused by heap resizing, aiding GC performance, while the other options influence where and how garbage collection occurs within the heap.

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