assign default java for TOS

English Applications
1

Hello,

Just setting up my new pc and trying to get the trading platform
Thinkorswim working. After running the installation, here is the error I
get:


Thinkorswim requires exactly Java 7, but found Java 8. Please set Oracle
Java 7 as default java for thinkorswim. Java must include JavaFX and
Oracel Java 7 has it, but OpenJDK 7 has not. Application will exit now.

Now when I did a zypper search, I found that I have the following installed:


# zypper se openjdk
Loading repository data...
Reading installed packages...

S | Name                                  | Summary
| Type
--+---------------------------------------+--------------------------------------------------------------+-----------
i | java-1_7_0-openjdk                    | Java runtime environment
based on OpenJDK 7 and IcedTea 7    | package
i | java-1_7_0-openjdk-headless           | JRE based on OpenJDK 7 and
IcedTea 7 without X, audio and -> | package
| java-1_7_0-openjdk-javadoc            | Documentation of the Java
API of OpenJDK 7                   | package
i | java-1_7_0-openjdk-plugin             | Java Web Start and plugin
implementation                     | package
i | java-1_8_0-openjdk                    | OpenJDK Runtime Environment
| package
i | java-1_8_0-openjdk-headless           | OpenJDK Runtime Environment
| package
i | java-1_8_0-openjdk-plugin             | Java Web Start and plugin
implementation                     | package

(I deleted the extra entries and only showed what was installed above)

My understanding of openjdk is that it contains more than the JRE, and
actually has the compilers and debuggers for developing applications. I
am not trying to develop applications, but just to run one, so the JDK
should be overkill compared to just having the JRE.

Now since I already have openJDK 7 and openJDK 8 both on my computer, I
should be able to just somehow point thinkorswim to run openJDK 7
instead of 8, right? But I have no idea how to do that. Any ideas?

–
G.O.
Box #1: 13.1 | KDE 4.12 | AMD Phenom IIX4 | 64 | 16GB
Box #2: 13.1 | KDE 4.12 | AMD Athlon X3 | 64 | 4GB
Laptop #1: 13.1 | KDE 4.12 | Core i7-2620M | 64 | 8GB
Laptop #2: 13.2 | KDE 4.14 | Core i7-4710HQ | 64 | 16GB

2

Hi,
just start your application with the right java.

Normally, for openjdk 1.7 this should lie in:

/usr/lib64/jvm/java-1.7.0-openjdk-1.7.0/bin/

So


/usr/lib64/jvm/java-1.7.0-openjdk-1.7.0/bin/java -jar yourprog.jar

should do the trick.

HTH

Lenwolf

3

I created scripts that will install Oracle Java 7 in a few seconds
https://github.com/putztzu/openSUSE_Oracle_Java_Install

As described, use the link to download the Oracle Java 7 rpm.
Then, run the scripts in order.

After you’ve installed Oracle Java 7, you need to run the “update-alternatives” utility to specify which Java you want to use, this utility allows you to have multiple JRE and JDK installed on a system and easily switch between them.

Have fun,
TSU

4

On 02/13/2015 10:46 AM, tsu2 wrote:
>
> I created scripts that will install Oracle Java 7 in a few seconds
> https://github.com/putztzu/openSUSE_Oracle_Java_Install
>
> As described, use the link to download the Oracle Java 7 rpm.
> Then, run the scripts in order.
>
> After you’ve installed Oracle Java 7, you need to run the
> “update-alternatives” utility to specify which Java you want to use,
> this utility allows you to have multiple JRE and JDK installed on a
> system and easily switch between them.
>
> Have fun,
> TSU
>
>
Ok, great. I downloaded the Oracle Java 7 rpm and installed it. Here is
the result:


# zypper in jdk-7u75-linux-x64.rpm
Loading repository data...
Reading installed packages...
Resolving package dependencies...

The following NEW package is going to be installed:
jdk

1 new package to install.
Overall download size: 120.8 MiB. Already cached: 0 B  After the
operation, additional 197.3 MiB will be used.
Continue? [y/n/? shows all options] (y): y
Retrieving package jdk-2000:1.7.0_75-fcs.x86_64
(1/1), 120.8 MiB (197.3 MiB unpacked)
Checking for file conflicts:
...................................................................................[done]
(1/1) Installing: jdk-2000:1.7.0_75-fcs
........................................................................[done]
Additional rpm output:
Unpacking JAR files...
rt.jar...
jsse.jar...
charsets.jar...
tools.jar...
localedata.jar...
jfxrt.jar...

However, I have not been able to figure out how to execute these scripts:


# ./rt.jar
bash: ./rt.jar: No such file or directory
# java rt.jar
Error: Could not find or load main class rt.jar

So how do I execute these scripts?

I have not yet gone through the sdb on this page
https://en.opensuse.org/SDB:Installing_Java, because I was under the
impression that if I run those scripts in the package you wrote, it
takes care of everything. I hope I am understanding this right.

Thanks for your help.

–
G.O.
Box #1: 13.1 | KDE 4.12 | AMD Phenom IIX4 | 64 | 16GB
Box #2: 13.1 | KDE 4.12 | AMD Athlon X3 | 64 | 4GB
Laptop #1: 13.1 | KDE 4.12 | Core i7-2620M | 64 | 8GB
Laptop #2: 13.2 | KDE 4.14 | Core i7-4710HQ | 64 | 16GB

5

On 02/13/2015 10:46 AM, tsu2 wrote:
>
> I created scripts that will install Oracle Java 7 in a few seconds
> https://github.com/putztzu/openSUSE_Oracle_Java_Install
>
> As described, use the link to download the Oracle Java 7 rpm.
> Then, run the scripts in order.
>
> After you’ve installed Oracle Java 7, you need to run the
> “update-alternatives” utility to specify which Java you want to use,
> this utility allows you to have multiple JRE and JDK installed on a
> system and easily switch between them.
>
> Have fun,
> TSU
>
>
Nevermind my last post, I figured it out. I couldn’t find where the
scripts were downloaded to, but they were downloaded into
“openSUSE_Oracle_Java_Install” which was put in my home directory.

I did run into a hitch when running the install scripts - script 1 and 2
were written with jdk1.7.0_67 in mind, and I had to switch them to
jdk1.7.0_75, which was the lastest java 7 version that I had downloaded.
Since I didn’t do that in the first place, I had to go back into the
directories in /usr/… and delete some improperly placed links, and
then run the scripts again. Once all the scripts showed that they
executed correctly, the system was installed correctly.

In order to run TOS, I had to do the following command:


# update-alternatives --config java
There are 3 choices for the alternative java (providing /usr/bin/java).

Selection    Path                                       Priority   Status
------------------------------------------------------------
* 0            /usr/lib64/jvm/jre-1.8.0-openjdk/bin/java   18040
auto mode
1            /usr/lib64/jdk_Oracle/bin/java              3
manual mode
2            /usr/lib64/jvm/jre-1.7.0-openjdk/bin/java   17147
manual mode
3            /usr/lib64/jvm/jre-1.8.0-openjdk/bin/java   18040
manual mode

Press enter to keep the current choice[li], or type selection number: 1[/li]update-alternatives: using /usr/lib64/jdk_Oracle/bin/java to provide
/usr/bin/java (java) in manual mode

So I have set it in manual mode to java 7, and I can run TOS.

But now the question is, if I normally want to be running java 8 (in
order to have the latest version with all the security patches), do I
need to run the update-alternatives every time I get in and out of TOS?
Right now I am thinking of creating another script that will run this so
I can select it, but I am wondering if there is an easier way.

–
G.O.
Box #1: 13.1 | KDE 4.12 | AMD Phenom IIX4 | 64 | 16GB
Box #2: 13.1 | KDE 4.12 | AMD Athlon X3 | 64 | 4GB
Laptop #1: 13.1 | KDE 4.12 | Core i7-2620M | 64 | 8GB
Laptop #2: 13.2 | KDE 4.14 | Core i7-4710HQ | 64 | 16GB

6

Good that you figured out the modification for the specific JDK version.
I need to update the scripts each time Oracle releases a new minor version.

I recommend you just switch to JDK 7 whenever you need to, or leave that as the default since even today most Java apps don’t require JDK 8… yet.

In other words, switch your entire system as needed.
It gets a little trickier to assign the Java HOME variable to specific apps and may not be possible using update-alternatives.

TSU

7

The above is not correct.

A default openJDK install will contain only a JRE and nothing more.
This is because of its inability to distribute the compiler parts that are proprietary.

If you’re running openJDK and need to compile, it’s possible to build the compiler parts yourself (because you can download the required source separately) but most people instead just install the Oracle JDK instead which is not only easier to acquire the needed functions but is more certain of results.

The JDK contains much more than “just” compilers, this thread is one example where the JDK also has extensions which may be required for some apps.

TSU

8

On 02/14/2015 06:46 PM, tsu2 wrote:

>
> I recommend you just switch to JDK 7 whenever you need to, or leave that
> as the default since even today most Java apps don’t require JDK 8…
> yet.
>
> In other words, switch your entire system as needed.
> It gets a little trickier to assign the Java HOME variable to specific
> apps and may not be possible using update-alternatives.
>
> TSU
>
Ok, great. I ended up writing a script that runs the update alternatives
before executing the TOS application, and then runs it again when I exit
so that I can switch to Oracle JDK 7 at that time.

It is a bit of a workaround, but it works, and it is preferable to
having to run the application in Windows inside VirtualBox.

Thanks again for your help, I am very glad to have gotten this running now!

>

–
G.O.
Box #1: 13.1 | KDE 4.12 | AMD Phenom IIX4 | 64 | 16GB
Box #2: 13.1 | KDE 4.12 | AMD Athlon X3 | 64 | 4GB
Laptop #1: 13.1 | KDE 4.12 | Core i7-2620M | 64 | 8GB
Laptop #2: 13.2 | KDE 4.14 | Core i7-4710HQ | 64 | 16GB

9

Hi everyone,

I came back with a working solution to run TOS without changing the current java installation. I just installed the requested java version, e.g 1.7 and modified
the test directory name in the thinkorswim script.

  1. I downloaded the 1.7 version from here: http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html

  2. extract the jdk directory. I put it in the /tmp directory as I don’t delete the contents there but can be installed anywhere.

  3. edit the bash file “thinkorswim” and search the procedure “test_jvm()” and change it like this:

    test_jvm() {
    tested_jvm=na
    test_dir=/tmp/jdk1.7.0_79
    #test_dir=$1
    bin_dir=$test_dir/bin
    java_exc=$bin_dir/java

…
}

The TOS platform will launch smoothly.

Best,

Farid.