Velocity based tools

Reference to the ResourceLoader object class can be passed to a Velocity template in it's context:

ResourceLoader rb = new ResourceLoader("_org.sakaiproject.tool.foobar.bundle.Messages_");
context.put("tlang", rb );

Then any strings can be referenced as standard velocity variables:

$tlang.getString("foo");

For Sakai 2.8 and newer you can also supply parameters to getFormattedMessage such as:

$tlang.getFormattedMessage("foo", $value)