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

Matt Kuzovkin
Matt Kuzovkin
1,653 Points
Posted by Matt Kuzovkin
Matt Kuzovkin
1,653 Points

i can not handle this task, maybe you could give me a solution so i could learn. Thank you!

Here is what i have so far:

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

public void charge() { mBarsCount = MAX_BARS; }

}

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

  public void charge() {
    mBarsCount = MAX_BARS;
  }



  isFullyCharged();
  if (MAX_BARS) {
    return isFullyCharged;
  }
}

1 Answer

Chase Marchione
Chase Marchione
155,055 Points
Chase Marchione
Chase Marchione
155,055 Points

Hi Matt,

  • We'll need to create a new method called isFullyCharged(). It will return a boolean value, so I will designate boolean as the method's return type.
  • You're right to include MAX_BARS in your if statement, but what we want to do is check if mBarsCount is equal in value to MAX_BARS: this is how we would know if the bar count as at total/maximum capacity, which is when we want the return value to be true (since that would mean that the GoKart is fully charged.)

Here's how I just did it:

  public boolean isFullyCharged() {
    if (mBarsCount == MAX_BARS) {
      return true; 
    }
    else {
      return false; 
    }
  }

Hope this helps.