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Java Java Objects Harnessing the Power of Objects Computed Properties

Thiago Silva
Thiago Silva
715 Points
Posted by Thiago Silva
Thiago Silva
715 Points

the comparison barCount == 0 is not working in my code. What is the problem?

The same happened when I tried to replicate the exercise during the class, the operator "==" does not work as intended.

GoKart.java 
class GoKart {
  public static final int MAX_BARS = 8;
  private String color;
  private int barCount;

  public GoKart(String color) {
    this.color = color;
  }

  public String getColor() {
    return color;
  }

   public boolean isBatteryEmpty(){
    barCount == 0;
  }

  public void charge() {
    barCount = MAX_BARS;
  } 

}

1 Answer

jacobproffer
jacobproffer
24,604 Points

Hey Thiago,

Make sure you're following the structure of the prompt. You are being asked to create a boolean method that returns true if barCount has the value of 0 and false otherwise. The double equals sign in Java is for comparison. As of now, it looks like you're attempting to use it for assignment. You'll need to do that comparison inside of something like an if statement. 

public boolean isBatteryEmpty() {
  if (barCount == 0) {
    return true; 
  } else {
    return false;
  }
}
Thiago Silva
Thiago Silva
715 Points
Thiago Silva
Thiago Silva
715 Points

Thanks Jacob! I had thought that using an "If" would be correct, but during the video it was used simply as I originally did above. I am not sure how it worked for Craig; Anyway, I'll start doing it with "If" from now on.