How to compile and run H2 TriggerSample - command-line

Question

I copied TriggerSample.java to this directory. Then:
javac -cp h2-1.3.168.jar TriggerSample.java
creates
TriggerSample$MyTrigger.class ... and ... TriggerSample.class
Then:
java TriggerSample
says:
Exception in thread "main" java.lang.NoClassDefFoundError: TriggerSample (wrong name: org/h2/samples/TriggerSample)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
also no go with:
java org.h2.samples.TriggerSample
java org/h2/samples/TriggerSample
How exactly to run that example from the command line?

Answer 1

This is a regular Java problem. The package name of class TriggerSample is org.h2.samples. You should use the directory name org/h2/samples.
Create a directory org/h2/samples
mkdir org/h2/samples
Move the file TriggerSample.java to that directory
Run
javac -cp h2-1.3.168.jar org/h2/samples/TriggerSample.java
Then run
java -cp h2-1.3.168.jar:. org.h2.samples.TriggerSample
Or: remove the package declaration of the file TriggerSample.java.