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

Posted by Lalit Taparia
Lalit Taparia
667 Points

I don't know, why this is wrong

Please help me to correct this code.

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() {
    mBarsCount = MAX_BARS;
  }

  public Boolean isBatteryEmpty(){

    if (mBarsCount==0){
     return true; 
    }
  }
}
Kourosh Raeen
Kourosh Raeen
23,733 Points
Kourosh Raeen
Kourosh Raeen
23,733 Points

The problem is that the method doesn't return anything if mBarsCount is not zero. See if you can add code to account for that case.

1 Answer

Geovanie Alvarez
Geovanie Alvarez
21,500 Points
Geovanie Alvarez
Geovanie Alvarez
21,500 Points

In the isBatteryEmpty() method you need to add the return out side the if statement

public Boolean isBatteryEmpty(){

    if (mBarsCount==0){
     return true; 
    }
    return false; // here
  }

or you can just do this

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