PPT Slide

public interface Printable{

public void printMe( );

} // of interface

public class PrintableText extends TextFile implements Printable{

// inherits from TextFile

// must have printMe( ) method to implement Printable

public void printMe( ) {

// code to print the text file goes here

} // printMe

} // PrintableText

public class PrintableGraphics extends Graphics implements Printable {

// inherits from Graphics

// must have printMe( ) method to implement Printable

public void printMe( ) {

// code to print the Graphics object goes here

} // printMe

} // PrintableGraphics

Interface Example