Linux, cant find installation of java

While I am still trying to find out how to install java 1.7 in 32 bit mode
   (with a yum install)

In parallel, I am trying to install a 32 bit version without the yum

rpm -Uvh jre-7u45-linux-i586.rpm
Preparing...                ########################################### [100%]
   1:jre                    ########################################### [100%]
Unpacking JAR files...
        rt.jar...
        jsse.jar...
        charsets.jar...
        localedata.jar...
        jfxrt.jar...
        plugin.jar...
        javaws.jar...
        deploy.jar...

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My java still thinks he is 64 bit

OpenJDK Runtime Environment (rhel-2.4.3.3.el6-x86_64 u45-b15)
OpenJDK 64-Bit Server VM (build 24.45-b08, mixed mode)

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So I try the alternatives command

So he sees the two previously installed 64 bit versions

There are 2 programs which provide 'java'.

  Selection    Command
-----------------------------------------------
*+ 1           /usr/lib/jvm/jre-1.7.0-openjdk.x86_64/bin/java
   2           /usr/lib/jvm/jre-1.6.0-openjdk.x86_64/bin/java

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So how do I tell if the java 32 bit was installed

and how do I tell it to use the 32 bit as primary

Thanks