steerable.java

来自「java 完全探索的随书源码」· Java 代码 · 共 12 行

public interface Steerable {

  String NORTH_DIRECTION = "North";
  String SOUTH_DIRECTION = "South";
  String EAST_DIRECTION  = "East";
  String WEST_DIRECTION  = "West";

  void turnLeft();
  void turnRight();
  String getCurrentDirection();
}