flashingcoloredlight.java

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// Introduced in Chapter 3
/** A flashing, colored light bulb. */
public class FlashingColoredLight extends ColoredLight {

  /** No special initialization is required. */
  public FlashingColoredLight() {
    super();
  }

  /** Toggle the light's on status after returning a String. */
  public String toString() {
    String result;
    if (isOn()) {
      result = "" + getColor();
    } else {
      result = ".";
    }
    setOn(!isOn());
    return result;
  }

}