Now create a helper method named isFullyCharged. It should return true if the GoKart is at max capacity.

Question

Yeah I'm sure I'm doing this assignment correctly....but it's telling me I've got a compiler error!?

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 boolean isBatteryEmpty(){
  if (mBarsCount<=0){

     return true;
  } 

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

  public void charge() {
    mBarsCount = MAX_BARS;
  }
}

Answer 1 · 2016-09-26T09:58:54Z

September 26, 2016 9:58am

When you check your challenge, please post here also push "Preview" button. It shows you errors that you do:

If you paste your code and after Error, hit "Preview button", you will see the following output:

/GoKart.java:22: error: illegal start of expression
   public boolean isFullyCharged(){
   ^
./GoKart.java:22: error: ';' expected
   public boolean isFullyCharged(){
                                ^
./GoKart.java:26: error: illegal start of expression
  public void charge() {
  ^
./GoKart.java:26: error: illegal start of expression
  public void charge() {
         ^
./GoKart.java:26: error: ';' expected
  public void charge() {
                    ^
./GoKart.java:29: error: reached end of file while parsing
}
 ^
JavaTester.java:89: error: cannot find symbol
  kart.charge();
      ^
  symbol:   method charge()
  location: variable kart of type GoKart
7 errors

As you can see the first error is the illegal start of expression. You have to go to the line "22" and take a look if everything is OK...

Illegal start of expression means you cannot write public, and you cannot write public because you haven't close your public boolean isBatteryEmpty() { method.

And because it is not closed with brace '}' compiler cannot proceed to the next method :isFullyCharged.

Fix that and try to catch another error:) And make sure you check errors after hitting Preview button.

The second error should be straightforward to fix.

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Roger Vieira

Roger Vieira

Now create a helper method named isFullyCharged. It should return true if the GoKart is at max capacity.

1 Answer

Alexander Nikiforov

Alexander Nikiforov