TemplateEngine
object is used to create strings which have system variable names replaced with their values. This is used by the Source
context object to ensure that values taken from an XML element or attribute can be values values augmented with system or environment variable values. tools=${java.home}/lib/tools.jar Above is an example of the use of an system variable that has been inserted into a plain Java properties file. This will be converted to the full path to tools.jar when the system variable "java.home" is replaced with the matching value.