I got this up and running with java-11-openjdk from the “updates” repo. After installing I had to run ‘sudo alternatives --config java’ like you did. I’m not entirely sure Zulu Java 11 is mandatory. In the past I got ToS running on both EndeavourOS and on Mint the same way. KDE/Wayland here, FWIW…

Here is what I used for Ubuntu Mate

1. Download and install jdk-8u241-linux-x64 from Oracle website
   In my case I extracted tar.gz files to /opt/ as there was no .deb install file

2. Point to the newly installed JRE
   sudo update-alternatives --install "/usr/bin/java" "java" "/opt/<jdk path>/bin/java" 0

3. Install thinkorswim_installer.sh file

4. Increased allocated RAM in settings on login window

Hope this somewhat helps.

Yes the thinkorswim desktop application is much more powerful than the web version.

I got this up and running with java-11-openjdk from the “updates” repo. After installing I had to run ‘sudo alternatives --config java’ like you did. I’m not entirely sure Zulu Java 11 is mandatory. In the past I got ToS running on both EndeavourOS and on Mint the same way. KDE/Wayland here, FWIW…

I got this up and running with java-11-openjdk from the “updates” repo. After installing I had to run ‘sudo alternatives --config java’ like you did. I’m not entirely sure Zulu Java 11 is mandatory. In the past I got ToS running on both EndeavourOS and on Mint the same way. KDE/Wayland here, FWIW…

Instructions for Lubuntu / Ubuntu 19.04

Thanks to Michael in tech support at Thinkorswim.

The following instructions should help you to install thinkorswim with the proper version of Java:

Installing Zulu OpenJDK:

1. Log in as root or use sudo

2. Import Azul's public key

   $ sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 0xB1998361219BD9C9
   

3. Add the Azul package to the APT repository

   For Ubuntu

   $ sudo apt-add-repository 'deb http://repos.azulsystems.com/ubuntu stable main'
   

   For Debian

   $ sudo apt-add-repository 'deb http://repos.azulsystems.com/debian stable main'
   

4. Update the information about available packages.

   $ sudo apt-get update
   

5. Install Zulu by using the following command:

   $ sudo apt-get install zulu-8
   

Once Zulu is installed move on to installing ThinkorSwim:

1. Navigate to downloads and right click "thinkorswim_installer.sh", select "Properties"
2. Select the "Permissions" tab, and make sure "Allow executing file as program" is selected
3. Close the window
4. Double click "thinkorswim_installer.sh"

-IF ONLY A TEXT EDITOR OPENS, CLOSE IT AND CONTINUE BELOW-

5. Click back onto the file explorer
6. Open from the top menu bar: Edit > Preferences OR Files > Preferences
7. Select the "Behavior" tab
8. Select "Ask each time" OR "Ask what to do" under "Executable Text Files"
9. Close the window and launch "thinkorswim.sh" and select "Run" from the prompt

Please check the workarounds that work for me.

I figured it out. The script is actually corrupt. I think they transferred the fire to their server as ASCII instead of binary. I found a good copy on the Internet Archive's Wayback Machine. It installs. Let me know if it worked for you.

https://web.archive.org/web/20150801000000*/https://mediaserver.thinkorswim.com/installer/InstFiles/thinkorswim_installer.sh

IIRC there's a separate 3rd party JVM that it requires. It's been several years since I've used it though.