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

Posted by Carter Pringle
Carter Pringle
3,416 Points

I'm sort of stuck on the exersize. I check if the mBarsCount is equal to 0, then do my try catch. Any pointers?

I was trying it without the if statement at first, but when I checked it I was getting the 'bummer' tip

public void drive() { if (mBarsCount==0){ try { drive(1); } catch (IllegalArgumentException e){ System.out.println("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() {
    if (mBarsCount==0){
    try {
      drive(1);
    }
    catch (IllegalArgumentException iae){
     System.out.println("Not enough battery remains"); 
    }
    }
  }

  public void drive(int laps) {
    // Other driving code omitted for clarity purposes
    mBarsCount -= laps;
  }

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

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

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

}

1 Answer

Rob Bridges
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Rob Bridges
Full Stack JavaScript Techdegree Graduate 35,467 Points
Rob Bridges
.a{fill-rule:evenodd;}techdegree seal-36
Rob Bridges
Full Stack JavaScript Techdegree Graduate 35,467 Points

Hey there Carter in this challenge we don't need to catch anything yet. First just check to see if laps is greater than mBarsCount. 

If(laps > mBarsCount) { 
 // throw exception
} 
mBarsCount - laps;

Sorry for any syntax errors on my tablet.

This should get you started. Let me know if it doesn't help.

Thanks.

Carter Pringle
Carter Pringle
3,416 Points

Awesome! Thanks for the help

Carter Pringle
Carter Pringle
3,416 Points

Amazing how easy it can be to over complicate things