You can specify a properties file to load with the environment variable QIBM_JAVA_PROPERTIES_FILE.
QIBM_JAVA_PROPERTIES_FILE=/path/to/myproperties.properties java -cp "Test.jar:lib/*" my.package.MainClass
In addition properties in a file named SystemDefault.properties will be automatically loaded if it exists in the user home directory.
Here are some links to additional documentation that may be useful: