Basic HTML version of Foils prepared 18 May 97

Foil 66 Java Language -- Interface Example -- Implementing Storable

From Java Tutorial - Spring 1997 Part II: Java Language and Object-Oriented Concepts Peking Tutorial, Web Certificate -- Spring-Summer 1997. by Nancy J. McCracken,Geoffrey C. Fox
A class may implement an interface, in which case it provides the body for the methods specified in the interface.
interface storable has store and retrieve methods
  • public class Picture implements Storable {
    • public void store(Stream s) {
    • // JPEG compress image before storing
    • }
    • public void retrieve(Stream s) {
    • // JPEG decompress image before retrieving
    • }
  • }
  • public class StudentRecord implements Storable {
    • . . .
  • }

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