# Revision history [back]

This exactly same question comes up over and over, but seems like TDF doesn't care to mention it unless it comes up in a place like this.

You need a JDK, JRE ain't enough. You don't mention your OS, but I'm gonna assume Window$. From http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html download u102 for Window$ x86 and x64, then install the x86 (32-bit) first [1], and then try x64. If nothing comes up as a warning of the system not being 64-bit, then install it just like you installed the 32-bit one. Be sure to install the 32-bit first.

[1] If you've already installed u102 JRE of either bit width, then unmark the JRE during installation.

This exactly same question comes up over and over, but seems like TDF doesn't care to mention it unless it comes up in a place like this.

You need a JDK, JRE ain't enough. You don't mention your OS, but I'm gonna assume Window$. From http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html download u102 for Window$ x86 and x64, then install the x86 (32-bit) first [1], and then try x64. If nothing comes up as a warning of the system not being 64-bit, then install it just like you installed the 32-bit one. Be sure to install the 32-bit first.

[1] If you've already installed u102 JRE of either bit width, then unmark the JRE during installation.installation. Be mindful of which bit width of JRE you installed so that you have both bit widths installed on a 64-bit system.