6 Answers. Minecraft is written in Java, so it should “adapt” itself to both 32-bit and 64-bit systems (depending if you have a 32-bit or 64-bit Java runtime). While Minecraft itself is not optimized for 64-bit, it will take advantage of JVM optimizations for 64-bit processors.

How do I install 64-bit Java?

1. Choose the 64-bit Windows offline download. The File Download dialog box appears.
2. Choose the folder location. …
3. Close all applications including the browser.
4. Double-click on the saved file icon to start the installation process.

How do I know if I have Java 64-bit Windows 10?

1. Click the Start button.
2. Scroll through the applications and programs listed until you see the Java folder.
3. Click on the Java folder, then About Java to see the Java version.