Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Java Java Objects Harnessing the Power of Objects Computed Properties

Petter Jonasson
Petter Jonasson
808 Points
Posted by Petter Jonasson
Petter Jonasson
808 Points

Hi, i need some help.

Create a new public method named isBatteryEmpty that returns true if the battery has 0 bars remaining, and false otherwise.

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

  if (barCount.isBatteryEmpty()) {
    System.out.println("True");
  }

  if (!barCount.isBatteryEmpty()) {
    System.out.println("false");
  }

  public String getColor() {
    return color;
  }

  public void charge() {
    barCount = MAX_BARS;
  }
}

1 Answer

Stuart Wright
Stuart Wright
41,120 Points
Stuart Wright
Stuart Wright
41,120 Points

You actually have the correct solution for this right there in your code:

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

The reason your code isn't passing the challenge is because of the two if blocks you've added straight afterwards - these aren't valid (because they are not inside methods). Just delete these and your code is good to go.

Petter Jonasson
Petter Jonasson
808 Points
Petter Jonasson
Petter Jonasson
808 Points

Thank you for your quick answer. It helped a lot.