Success installing TD Ameritrade Thinkorswim (TOS) trading platform by first installing Oracle (Sun) Java Development Kit (JDK):jdk-8u112-linux-x64.rpm

I used this opensuse guide: SDB: Installing Java / openSUSE Support Database

Perfect; Many thanks to whoever put that up because, I could not get it done alone!

and this for TOS (note TOS is using Java Ver 1.8 now)

Works for me! Have fun!