How to run an application on a specific Java version?

How can I run an application with a specific Java version? I have three Java versions intstalled:

myuser@mysystem:~$ sudo update-alternatives --config java
There are 3 choices for the alternative java (providing /usr/bin/java).

  Selection    Path                                            Priority   Status
------------------------------------------------------------
  0            /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java   1081      auto mode
* 1            /opt/jdk-9.0.4/bin/java                          1         manual mode
  2            /opt/jdk1.8.0_162/bin/java                       1         manual mode
  3            /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java   1081      manual mode

I have Java 9 set as default and I'd like to keep it that way. Still, an application named pdfsam doesn't seem to work properly with Java 9. What command is necessary to run it with openjdk (option 3)?