Basic HTML version of Foils prepared Sept 21 1998

Foil 35 Interface Example -- Implementing Storable

From Java Tutorial 98- 2: Java Language and Object Oriented Techniques NAVO Tutorial -- Sept 23 1998. by Geoffrey C. Fox, Nancy McCracken
1 A class may implement an interface, in which case it provides the body for the methods specified in the interface.
2 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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