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Java Java Objects Harnessing the Power of Objects Changing State

Joakim Sjöstedt
Joakim Sjöstedt
1,975 Points
Posted by Joakim Sjöstedt
Joakim Sjöstedt
1,975 Points

How do I get the GoKart filed and method to work?

The challange told me to declare a private variable named barCount, so I tried:

private int barCount=0;

and

private int barCount;

Treehouse said OK! on with the next challenge: Write a method that sets the barCount to MAX_BARS

so I tried:

public void charge(){ barCount = MAX_BARS }

as well as:

public void charge(){ do ( barCount ++ ) while (barCount < MAX_BARS)
}

Treehouse now tells me that the first task I did no longer works. Why? Any ideas?

GoKart.java 
class GoKart {
  public static final int MAX_BARS = 8;
  private String color;
  private int barCount=0;

  public void charge(){
  do (
      barCount ++
    ) while (barCount < MAX_BARS)    
    }

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

  public String getColor() {
    return color;
  }
}
Chaltu Oli
Chaltu Oli
4,915 Points
Chaltu Oli
Chaltu Oli
4,915 Points

I think you have to subtract barCount from MAX_BARS

2 Answers

andren
andren
28,558 Points
andren
andren
28,558 Points

The "Task 1 is no longer passing" message usually comes up because there is a problem in your code that causes the code checker to crash while evaluation your code.

In your case both of the solutions you came up while are correct logic wise, but they both have at least one code error within them.

Your first solution:

public void charge(){
    barCount = MAX_BARS // <- You are missing a semicolon ;
}

Is missing a semicolon to terminate the statement.

Your second solution:

public void charge() {
    do ( // <- The ( should be a {
        barCount ++ // <- You are missing a semicolon ;
    ) while (barCount < MAX_BARS) // <- The ) should be a } and you are missing a semicolon ;
}

Has three issues. You are meant to use curly braces {} for a do loop, not parenthesis (). You are also missing a semicolon after the barCount ++ line and the while statement.

If you fix the issues I outline above then either solution will work for passing the challenge. Though the first solution is the closest to the intended solution.

Joakim Sjöstedt
Joakim Sjöstedt
1,975 Points
Joakim Sjöstedt
Joakim Sjöstedt
1,975 Points

Awesome, it worked! Got confused by it referring to task 1. Thanks for clearing that up! :)