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Java Java Objects (Retired) Harnessing the Power of Objects Helper Methods

Michelle Bramlett
Michelle Bramlett
1,253 Points
Posted by Michelle Bramlett
Michelle Bramlett
1,253 Points

Java Helper Method Challenge Task 2 receiving 1 error Ln 26 "Cannot find symbol" Stuck! Please help

Been stuck on this challenge too long:/ Researched other answers on forum and still not passing Insight, please!

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

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

  public String getColor() {
    return mColor;
  }
 public void charge() {
   if (isBatteryEmpty()) {
     mBarsCount ++;
   }
 }

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

  public boolean isFullyCharged() {
    return mBarsCount == MAX_BARS;
  if(!isBatteryEmpty) {
    return true;
  } 

  }

}
Simon Coates
Simon Coates
28,694 Points
Simon Coates
Simon Coates
28,694 Points

The following still crashes, but shows the updated code.

public class GoKart {
  public static final int MAX_BARS = 8;
  private String mColor;
  private int mBarsCount;

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

  public String getColor() {
    return mColor;
  }

  public void charge() {
   if (isBatteryEmpty()) {
     mBarsCount ++;
   }
 }

  //task 1:
  public boolean isBatteryEmpty() {
    return mBarsCount == 0;
  }
  //task2
  public boolean isFullyCharged() {
    return mBarsCount == MAX_BARS;
    //the following will never fire.
  /*
    if(!isBatteryEmpty) {//should be if(!isBatteryEmpty())
    return true;
  }*/
  }
}

I get the message "Bummer! Your method should return true when mBarsCount is full.". However, it goes away when I copy in:

public class GoKart {
  public static final int MAX_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_BARS;
  }

  //task 1:
  public boolean isBatteryEmpty() {
    return mBarsCount == 0;
  }
  //task2
  public boolean isFullyCharged() {
    return mBarsCount == MAX_BARS;
    //the following will never fire.
  /*
    if(!isBatteryEmpty) {//should be if(!isBatteryEmpty())
    return true;
  }*/
  }
}

which has the original charge method. SO YOU DID CHANGE SOMETHING IN ADDITION TO THE TASK AND IT MAY HAVE BEEN GIVING YOU FAULTY ERROR MESSAGES.

1 Answer

Simon Coates
Simon Coates
28,694 Points
Simon Coates
Simon Coates
28,694 Points

got it to work with:

public class GoKart {
  public static final int MAX_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_BARS;
  }
  public boolean isBatteryEmpty(){
     return mBarsCount == 0; 
  }
  public boolean isFullyCharged(){
     return mBarsCount == MAX_BARS; 
  }
}
Michelle Bramlett
Michelle Bramlett
1,253 Points
Michelle Bramlett
Michelle Bramlett
1,253 Points

Thanks Simon! My code was getting way to complicated as I was trying to get help. I can follow the simplicity of yours above( and it worked;)