java - How to determine if a JRE is 32/64bit from folder structure/files -


i have jre folder on windows system. there way determine if jre 32-bit or 64-bit looking @ files within?

to clarify, have multiple jre folders , want investigate each.

this not duplicate of suggested duplicate. wish know arch jre designed for, not arch of machine installed on

you can examine release file in java root directory, , @ os_arch. these contents on windows 8 machine; 64-bit 'amd64' while 32-bit 'i586'.

64 bit:

java_version="1.8.0_31" os_name="windows" os_version="5.2" os_arch="amd64" source=" .:fde671d8b253 corba:f89b454638d8 deploy:6bb9afd737b2 hotspot:4206e725d584 hotspot/make/closed:3961887b77fc hotspot/src/closed:5b436b7ac70c hotspot/test/closed:63646d4ea987 install:b2307098361c jaxp:1dd828fd98f1 jaxws:9d0c737694ec jdk:1fbdd5d80d06 jdk/make/closed:ebe49cb8785a jdk/src/closed:ef076fdb2717 jdk/test/closed:ab9c14025197 langtools:7a34ec7bb1c8 nashorn:ec36fa3b35eb pubs:532faa86dd91 sponsors:477c30a7726d" build_type="commercial"

32 bit:

java_version="1.8.0_31" os_name="windows" os_version="5.1" os_arch="i586" source=" .:fde671d8b253 corba:f89b454638d8 deploy:6bb9afd737b2 hotspot:4206e725d584 hotspot/make/closed:3961887b77fc hotspot/src/closed:5b436b7ac70c hotspot/test/closed:63646d4ea987 install:b2307098361c jaxp:1dd828fd98f1 jaxws:9d0c737694ec jdk:1fbdd5d80d06 jdk/make/closed:ebe49cb8785a jdk/src/closed:ef076fdb2717 jdk/test/closed:ab9c14025197 langtools:7a34ec7bb1c8 nashorn:ec36fa3b35eb pubs:532faa86dd91 sponsors:477c30a7726d" build_type="commercial"

alternatively, go bin folder , execute java -version.


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