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Java Java Objects (Retired) Harnessing the Power of Objects Throwing Exceptions

Posted by Erik Jacobsson
Erik Jacobsson
1,674 Points

Why do I get an error saying it cant find the symbol: IllegalArgumentExeption?

public void drive(int laps) { // Other driving code omitted for clarity purposes int newAmount = mBarsCount + laps; if(newAmount > MAX_BARS) { throw new IllegalArgumentExeption("Not enough battery remains"); } }

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 drive() {
    drive(1);
  }

  public void drive(int laps) 
  {
    // Other driving code omitted for clarity purposes
    int newAmount = mBarsCount + laps;
    if(newAmount > MAX_BARS)
    {
      throw new IllegalArgumentExeption("Not enough battery remains");
    }
  }

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

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

  public boolean isFullyCharged() {
    return mBarsCount == MAX_BARS;
  }

}

1 Answer

Benjamin Larson
Benjamin Larson
34,055 Points
Benjamin Larson
Benjamin Larson
34,055 Points

Hi Erik,

It looks like you have a bit of faulty logic for determining the exception clause. You want to determine when the number of laps requested is greater than the current battery level found in the mBarsCount member variable. Looks like you were thinking about it a bit differently and probably over-complicating it.

  public void drive(int laps) {
    // Other driving code omitted for clarity purposes
    if(laps > mBarsCount) {
      throw new IllegalArgumentException("Not enough battery remains");
    }
    mBarsCount -= laps;
  }
Erik Jacobsson
Erik Jacobsson
1,674 Points

Hi! Yea, I noticed that too. Changed it after I realized the logic. And I also saw that I had misspelled "Exception"... :)