Java virtual machine 64 bit windoww 10 32 bit#
Another thing that changed is the size of internal references that means it can go a maximum of up to 8 bytes wherein 32 bit JVM up-to 4 bytes. Though you can get away with this by using -XXCompressedOOP JVM option, which tells JVM to use 32-bit pointers.Ĥ) Both 32-bit and 64-bit JVM have a separate installer.ĥ) One more thing that changed in the 64 bit JVM architecture is object header size it is now 12 bytes in comparison to 8 bytes headers in 32 bit JVM.
Without wasting any more of your time, here is some of the key difference between 32-bit and 64-bit Java Virtual Machineġ) 64-bit JVM, you can specify more memory for heap size than 32-bit JVM, like in 32-bit JVM, the theoretical limit for maximum memory in 32-bit is 4G, but 64-bit is much higher.Ģ) 64-bit JVM is particularly useful for Java applications with large heaps, like applications that use more than 100G for max memory.ģ) The same Java application will take memory while running in 64-bit JVM then 32-bit because of the increased size of OOP (Ordinary Object pointer), from 32 to 64 bits. You will find out what they are, how they are different, how much heap size, and the pros and cons of each of them.Īs I said, it's also one of the most asked questions to me on Facebook and LinkedIn, what is the difference between a 32-bit and 64-bit JVM? While most of the servers now running on 64-bit JVM and it's rare to find server-side applications still running on 32-bit JVM nowadays but it is still something useful to learn and know.ĭifference between 32-bit JVM vs 64-bit JVM in Java I have tried to answer this question to the point that's why this article is a short but informative one. This is also a common Java interview question for beginners and intermediate Java programmers.
Earlier, I have shared the best JVM books and online JVM courses and in this article, I am going to talk about 32-bit vs 64-bit JVM and their pros and cons. Hello Java Programmers, if you want to learn Java virtual Machine in-depth and wondering what is the difference between a 32-bit and 64-bit JVM and which one should you use and why? then you have come to the right place.