Should I use 32 or 64-bit Java?

The 64-bit JVM is especially useful for Java applications with large heaps, such as those that use more than 100 GB of memory as a maximum. Because the size of the OOP (Ordinary Object Pointer) has increased from 32 to 64 bits, the same Java application will use more memory in the 64-bit JVM than in the 32-bit JVM.

Can Java 32 and 64-bit coexist?

Yes, it is absolutely no problem. You could even have multiple versions of both 32bit and 64bit Java installed at the same time on the same machine.

How do I change my Java from 32 bit to 64 bit?

Switching between 32-bit and 64-bit Java

  1. In the menu, click Settings > Active Profile.
  2. Click the Java icon and then the Advanced tab.
  3. Select 32-bit Java (default) or 64-bit Java.
  4. If you use 64-bit Java, specify an Execution timeout for the communication between the Silk Performer runtime and the JVM.

Is there a 64 bit version of Java?

Java is available on Microsoft Windows in 64 and 32 bit versions, allowing users to get the appropriate version for their system. Users can even run both side-by-side for 64 bit operating systems.

Does Java need 32-bit?

64 bit gives much better performance in most apps and it shouldn’t matter if the launching program is 32 bit, it can still run the 64 bit java. @AthomSfere, minecraft for one, recommends using a 64 bit java runtime if you want to enable the highest graphics modes as the performance is too slow under 32 bit.

What are the benefits of 64-bit JVM on 64-bit OS and hardware?

The 64-bit JVM allows heaps >> 4 GB and, as such, only makes sense for applications which can take advantage of huge memory on systems which have it. Generally there is either a slight improvement (due to certain hardware optimizations on certain platforms) or minor degradation (due to increased pointer size).

Where is Java 64bit installed?

All of the 64-bit programs are installed in the Program Files directory, easily accessible using Windows Explorer. Look for the Java directory within Program Files and you will find all of the 64-bit Java packages that are installed located there.

How do I make Java default to 64 bit?

Go to the Java Preferences (/Applications/Utilities/Java Preferences) and on the General tab just make sure the 64-bit java is first (you can click and drag them to change the order).

Does Java work on 32-bit?

Strictly speaking, on a 32-bit CPU architecture machine, you should install 32-bit java/JRE. On the other hand, on a 64-bit CPU architecture machine, you are free to choose between 32-bit java/JRE and 64-bit java/JRE. Both will work just fine.