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how to install jdk32 bit on a windows7 64bit machine

Java Devmail
Greenhorn

Joined: Sep 11, 2013
Posts: 1
Hi,

I need both versions of jdk -- 32 bit and also 64 bit installed on a windows 7 64 bit machine.

Can any one point me where to download jdk32 for win64 ? also if anyone has already done this, any pointers would be great help.

Thanks,
java_dev
Campbell Ritchie
Sheriff

Joined: Oct 13, 2005
Posts: 39828
    
  28
No, you don't. There is no difference in behaviour between a 32‑bit and a 64‑bit JDK. You will have to reinstall Java™ anyway, because there is a new update, and you will find all the downloads here. Including the 32‑bit versions.
Jesper de Jong
Java Cowboy
Saloon Keeper

Joined: Aug 16, 2005
Posts: 14345
    
  22

The "Windows x86" version is the 32-bit version. It can be installed on 32-bit and 64-bit Windows.

The "Windows x64" version is the 64-bit version. It can be installed only on 64-bit Windows.

You can have the 32-bit and 64-bit versions installed at the same time, as long as you install them in different directories. However, why would you want this? Note that Java bytecode is independent of the "bitness" of the JVM and operating system - you do not need to compile your Java program with the 32-bit and 64-bit versions separately, there will be no difference at all in class files that are produced, and classes compiled with the 32-bit version will run on the 64-bit version and vice versa.


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maxim markin
Greenhorn

Joined: Sep 09, 2013
Posts: 6
There is no difference in behaviour between a 32‑bit and a 64‑bit JDK

Difference in memory consuming 64 bit JVM consume more memory than 32 and therefore you application consume more, recommendation is to have at least 15% more memory if you want to use 64 bit java instead of 32.


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subject: how to install jdk32 bit on a windows7 64bit machine