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Java Java Objects Harnessing the Power of Objects Throwing Exceptions

Bolatito Seriki
Bolatito Seriki
1,170 Points
Posted by Bolatito Seriki
Bolatito Seriki
1,170 Points

Add logic to the drive method so that it throws an IllegalArgumentException if there aren't enough bars to support the l

I've tried every method but it's still wrong. can someone pls help me with the answer

GoKart.java 
'''java class GoKart { public static final int MAX_BARS = 8; private String color; private int barCount; private int lapsDriven;

public GoKart(String color) { this.color = color; }

public String getColor() { return color; } public void charge() { barCount = MAX_BARS; }

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

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

public void drive() { drive(1); }

public void drive(int laps) { if(laps>barCount){ throw new IllegalArgumentException(); } lapsDriven += laps; barCount -= laps; } '''

1 Answer

Simon Coates
Simon Coates
8,377 Points
Simon Coates
Simon Coates
8,377 Points

Seemed to accept

  public void drive(int laps) {
    if(barCount - laps <=0)
    {
      throw new IllegalArgumentException();
    }
    lapsDriven += laps;
    barCount -= laps;
  }

I thought it might be an boundary condition, but it passed for me with:

if(laps > barCount) throw new IllegalArgumentException();

as well. So I tried copy and paste with your method and it worked.

Jonathan Hermansen
Jonathan Hermansen
25,935 Points

I think

if(laps > barCount) throw new IllegalArgumentException();

Is the best approach , and should work absolutely fine.