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Java Java Objects (Retired) Meet Objects Creating New Objects

Joanna Deirmendjian
Joanna Deirmendjian
674 Points

Issue using the getColor method using System.out.printf to get color of object

This is the code:

public static void main(String[] args) {
    System.out.println("We are going to create a GoKart");
    new GoKart("Red");
    System.out.printf("The color is %s\n",
                      getColor());
}

}

This is the error:

./Example.java:7: error: cannot find symbol getColor()); ^ symbol: method getColor() location: class Example 1 error

Example.java
public class Example {

    public static void main(String[] args) {
        System.out.println("We are going to create a GoKart");
        new GoKart("Red");
        System.out.printf("The color is %s\n",
                          getColor());
    }
}

3 Answers

Alexander Nikiforov
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.a{fill-rule:evenodd;}techdegree seal-36
Alexander Nikiforov
Java Web Development Techdegree Graduate 22,161 Points

As your compiler suggests:

./Example.java:7: error: cannot find symbol getColor()); ^ symbol: method getColor() location: class Example 1 error

When you write in code, getColor() compiler is trying to find method getColor in the class where the code executed.

Obviously, there is no getColor() method in the Example class.

Hint: you should run this method on the class, where this method exists ...

Alexander Nikiforov
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Alexander Nikiforov
Java Web Development Techdegree Graduate 22,161 Points

When you create new GoKart object you have to save it to re-use later:

//save new GoKart in some goKart object to use later
// syntax is like this : 
// classType anyNameYouLike = new Class();
GoKart kart = new GoKart("red");

Now because we want to get the color of particular "kart" that we created and not some other kart, we have to use getColor() method on the "kart" we created

// now we can use
kart.getColor();

If you feel confused, please re-watch video before. In it Craig is doing exactly the same:

// create new PezDispenser
PezDispenser dispenser = new PezDispenser("Donatello");
// get character name of that particular dispenser
dispenser.getCharacterName();
Joanna Deirmendjian
Joanna Deirmendjian
674 Points

So mColor? I thought the private code on GoKart class would mean I use getColor? Anyway. Totally confused now.

Joanna Deirmendjian
Joanna Deirmendjian
674 Points

When I initially did this code in the previous exercise:

new GoKart("Red");

The challenge stated I was correct. I guess that is where my error lies.