Web Reference: Jul 23, 2025 · Similarly, there two different approaches to check the bit of JVM by using System property “sun.arch.data.model” or “os. arch”. It will return either 32 bit or 64 bit based on your Java installation. I need to determine whether a particular system has 32-bit Java installed. I'm doing a remote query that only gives me access to the filesystem and registry, so I cannot attempt to run java.exe, or run any Java code. Jan 16, 2026 · For example, a 32-bit JVM is limited to ~4GB of maximum heap memory, while a 64-bit JVM can leverage much larger memory pools (depending on the OS). In this blog, we’ll explore **how to programmatically detect whether your Java application is running on a 32-bit or 64-bit JVM**.
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