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Java Java Objects Harnessing the Power of Objects Computed Properties

Posted by Ahmed Sadat
.a{fill-rule:evenodd;}techdegree
Ahmed Sadat
Java Web Development Techdegree Student 643 Points

Hi guys in this task he said you don't pass task 1 but i actually i pass it

The task need to make two methods " isEmpty() " to check the barCount is equal to 0 or not and i did with no problem and the second method "isFully()" to check the barCount is equal to MAX_BARS and also i did it but there is error "Yo don't pass task 1" !!

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

   public boolean isFullyCharged(){
    retrun barCount != MAX_BARS ;
  }


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


  public String getColor() {
    return color;
  }

  public void charge() {
    barCount = MAX_BARS;
  }

 public boolean isBatteryEmpty(){
  if( barCount == 0) 
    return true ;
   else 
     return false ;
  }


}

3 Answers

Patrik Horváth
Patrik Horváth
11,110 Points
Patrik Horváth
Patrik Horváth
11,110 Points

i dont see in your code method "isEmpty()" looks like you called it "isBatteryEmpty" always use same names as they asked also in real life ! never use other method names never just never because you will get UML diagram and you have to have same code like on UML diagram

Ahmed Sadat
.a{fill-rule:evenodd;}techdegree
Ahmed Sadat
Java Web Development Techdegree Student 643 Points

ok sorry i mean ( isBatteryEmpty() ) but the implementation of it is true why i get error ?!

Patrik Horváth
Patrik Horváth
11,110 Points
Patrik Horváth
Patrik Horváth
11,110 Points

because "retrun " is not valid you have to use "return"

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

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

  public String getColor() {
    return color;
  }

  public void charge() {
    barCount = MAX_BARS;
  }
  public boolean isBatteryEmpty() {
   if( barCount == 0) {
    return true;
   } else {
     return false; 
   }
  }
   public boolean isFullyCharged() {
   if( barCount == MAX_BARS) {
    return true;
   } else {
     return false; 
   }
  }
}
Ahmed Sadat
seal-mask
.a{fill-rule:evenodd;}techdegree
Ahmed Sadat
Java Web Development Techdegree Student 643 Points
Ahmed Sadat
.a{fill-rule:evenodd;}techdegree
Ahmed Sadat
Java Web Development Techdegree Student 643 Points

Thanks Patrik it is silly mistake

Patrik Horváth
Patrik Horváth
11,110 Points
Patrik Horváth
Patrik Horváth
11,110 Points

dont use TreeHouse code editor use normal IDE it clearly tell you : Syntax error on line 10 for example or when you start type it will show you suggestions for type

for Java try : IntelliJ its best for java + hibernate + sprint + .... in my opinion :)

Ahmed Sadat
seal-mask
.a{fill-rule:evenodd;}techdegree
Ahmed Sadat
Java Web Development Techdegree Student 643 Points
Ahmed Sadat
.a{fill-rule:evenodd;}techdegree
Ahmed Sadat
Java Web Development Techdegree Student 643 Points

okay Patrik thanks