Is my understanding correct? And if it is correct, then I am getting error?.Now to test this, I logged in into my 64 bit Ubuntu guest OS and installed 64 bit JDK version - Linux 圆4 165.24 MB jdk-8u45-linux-圆4.tar.gz.Īfter installing the JDK, when I run my java program using -d64 then everything is as expected because it is in fact a 64 bit installation but when I use -d32 then I get error saying Error - This Java instance does not support 32 bit JVM.Įrror is understandable to me, but what confuses me is this line (as in above quoted para) "The options -d32 and -d64 have been added to the Java launcher to specify whether the program is to be run in a 32 or 64-bit environment."Īs per this line, my understanding is that when launching Java of 64 bit version, -d32 can be used to launch it in 32 bit mode. If neither -d32 nor -d64 is specified, theĭefault is to run in a 32-bit environment. Implementation contained within the same installation of Java, you can Since Solaris has both a 32 and 64-bit J2SE On Solaris these correspond to the ILP32 and LP64 data Specify whether the program is to be run in a 32 or 64-bitĮnvironment. The options -d32 and -d64 have been added to the Java launcher to How do I select between 32 and 64-bit operation? What's the default?
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