SE450: Types: Using Generic Methods [26/47] Previous pageContentsNext page

file:types/point6/Main.java [source] [doc-public] [doc-private]
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package types.point6;
import java.awt.Color;
interface Colored {
  Color getColor();
}
interface Point {
  double getX();
  double getY();
}
final class CartesianPoint implements Colored, Point {
  /* ... */
}
final class PolarPoint implements Colored, Point {
  /* ... */
}
class Main {
  private Main() {}
  public static <T extends Point & Colored> void printColoredPoint(T cp) {
    System.out.println(cp.getX());
    System.out.println(cp.getY());
    System.out.println(cp.getColor());
  }
  public static void main(String[] args) {
    printColoredPoint(new CartesianPoint(0,0,Color.RED));
    printColoredPoint(new PolarPoint(0,0,Color.RED));
  }
}

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