assign identifier = expression
class_name is the name of a Java class, using either the package path (using period (.) as a qualifier; for example, test1.extra.T1.Inner) or the full path name (preceded by a pound sign (#) and using slash (/) and dollar sign ($) as qualifiers; for example, #test1/extra/T1$Inner). Enclose class_name in quotation marks if you use the $ qualifier.
expression is a valid Java expression.
field_name is the name of a field in the class.
identifier is a local variable or parameter, including this, the current class instance variable (object_name.field_name) or a class (static) variable (class_name.field_name).
object_name is the name of a Java object.