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Java Java Objects (Retired) Harnessing the Power of Objects Incrementing

Posted by Charles Rotenberg
Charles Rotenberg
736 Points

What is wrong with my while loop?

Other then the fact that it is empty my syntax says there are problems with what I wrote in the brackets. If someone could point them out that would be very much appreciated.

GoKart.java 
public class GoKart {
  public static final int MAX_ENERGY_BARS = 8;
  private String mColor;
  private int mBarsCount;

  public GoKart(String color) {
    mColor = color;
    mBarsCount = 0;
  }

  public String getColor() {
    return mColor;
  }

  public void charge() {
    mBarsCount = MAX_ENERGY_BARS;
  }


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

  public boolean isFullyCharged() {
    return mBarsCount == MAX_ENERGY_BARS;
  }
  while(!mBarsCount.isFullyCharged()) {

  } 
}

3 Answers

Jacob Bergdahl
Jacob Bergdahl
29,119 Points
Jacob Bergdahl
Jacob Bergdahl
29,119 Points

The while-loop need to be placed inside a method. Right now it is out in the wild, where it cannot be!

Charles Rotenberg
Charles Rotenberg
736 Points

Thanks for the help again.

Charles Rotenberg
Charles Rotenberg
736 Points
Charles Rotenberg
Charles Rotenberg
736 Points

I am still having problem in my syntax saying that an int cannot be dereferenced. If someone could explain that to me that would be great.

Jacob Bergdahl
Jacob Bergdahl
29,119 Points
Jacob Bergdahl
Jacob Bergdahl
29,119 Points

On what line or what variable?

Charles Rotenberg
Charles Rotenberg
736 Points
Charles Rotenberg
Charles Rotenberg
736 Points

line 18

Jacob Bergdahl
Jacob Bergdahl
29,119 Points
Jacob Bergdahl
Jacob Bergdahl
29,119 Points

You've probably altered the code a little, so I'm not sure what line that is, but the probably is most likely that you wrote !mBarsCount.isFullyCharged(), while it should be simply !isFullyCharged(). You're trying to call this method on an integer, which doesn't work and there's also no need to, since you use the variable already in the method. So simply switch the condition in the while() to !sFullyCharged().