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syntactic unit > clause > implements clause

implements clause
subject			fact

implements clause	has example public class AnimatedSign extends javax.swing.JApplet implements Runnable { //... }
	has purpose to indicate that a class implements an interface
	has syntax className implements Interface1 (,Interface2, Interface3 ...)
	indicates that a class contains methods for each of the operations specified by the interface
	is a subtopic of Interfaces
	is a kind of clause
syntactic unit	has syntax rule bold = mandatory italic = non-terminal normal font = optional