Eclipse version 32-bit or 64-bit check on macOS

You can check what eclipse version is being installed on your macOS Operating System by going to the eclipse directory and look for the eclipse icon,

Right Click on the icon and select "Show Package Contents" now go to Content/MacOS/, here you would see eclipse.ini file, let's see what details this file contains,

eclipse ini file macOS

-startup
../../../plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar
--launcher.library
../../../plugins/org.eclipse.equinox.launcher.cocoa.macosx.x86_64_1.1.0.v20100503
-product
org.eclipse.epp.package.php.product
--launcher.defaultAction
openFile
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vmargs
-Dosgi.requiredJavaVersion=1.5
-XstartOnFirstThread
-Dorg.eclipse.swt.internal.carbon.smallFonts
-XX:MaxPermSize=256m
-Xms40m
-Xmx384m
-Xdock:icon=../Resources/Eclipse.icns
-XstartOnFirstThread
-Dorg.eclipse.swt.internal.carbon.smallFonts

Check the 4th line,

../../../plugins/org.eclipse.equinox.launcher.cocoa.macosx.x86_64_1.1.0.v20100503

If it contains x86_64 then your eclipse is 64-bit or else if it contains just x86 then it is a 32-bit setup.

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