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 (Retired) Harnessing the Power of Objects Incrementing

ankit panwar
ankit panwar
436 Points
Posted by ankit panwar
ankit panwar
436 Points

having missing return statement error

having return statement error in task 1 of increment video ....

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 isFullyCharged()
  {
  while(!isFullyCharged())
    { 
    boolean wascharge=false;
      if(isBatteryEmpty())
    {
    mBarsCount++;
    wascharge= true;
    }
 return wascharge;

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

}

1 Answer

Kourosh Raeen
Kourosh Raeen
23,733 Points
Kourosh Raeen
Kourosh Raeen
23,733 Points

You need to use the isFullyCharged() method to change the implementation of the charge() method, so keep the isFullyCharged() method just as it is given in the challenge and add code to the charge() method.

ankit panwar
ankit panwar
436 Points
ankit panwar
ankit panwar
436 Points

thank you kourosh but I ma having trouble with the coding ..can you help and explain public void charge() { while(!isFullyCharged()) { boolean wascharge=false; if(isBatteryEmpty()) { mBarsCount++; wascharge= true; }

}

mBarsCount = MAX_ENERGY_BARS;

}

Kourosh Raeen
Kourosh Raeen
23,733 Points
Kourosh Raeen
Kourosh Raeen
23,733 Points

You don't need the wascharge variable or the if statement. Just loop as long as the battery is not fully charged and inside the loop increment mBarsCount:

public void charge() {
    while(!isFullyCharged()) { 
        mBarsCount++; 
    }
}