java

Question

Okay, so let's throw an IllegalArgumentException from the drive method if the requested number of laps cannot be
   completed on the current battery level.
   Make the exception message "Not enough battery remains".
  public void drive(int laps) {
    // Other driving code omitted for clarity purposes
    int totalLaps = mBarsCount -= laps;
    if(totalLaps > mBarsCount){
      throw new IllegalArgumentException( "Not enough battery remains");
    }
    mBarsCount = totalLaps;
  }

Alexander Nikiforov · Answer

Make sure you post link to challenge, of hit Get Help button, to properly paste link to challenge, that helps a lot :) In order to find challenge :)
Now back to your code
java
public void drive(int laps) { 
  // Other driving code omitted for clarity purposes 
  // int totalLaps = mBarsCount -= laps; // this line is incorrect... what did you want to achieve with it ?
  if(totalLaps > mBarsCount){ 
    throw new IllegalArgumentException( "Not enough battery remains"); 
  } 
  // mBarsCount = totalLaps;  incorrect
  // here you have to leave the code before: simple -= decrementing
}

Does it make more sense now ? :)
So all you need to do is to add if statement just like you did without changing anything else in this code. Very simple, just like that.
Is that your challenge BTW?
https://teamtreehouse.com/library/java-objects/harnessing-the-power-of-objects/throwing-exceptions
?

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tyrone taylor

tyrone taylor

java

1 Answer

Alexander Nikiforov

Alexander Nikiforov