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Java Java Objects (Retired) Meet Objects Constructors

Posted by Wayne Greenwood
Wayne Greenwood
15,907 Points

Now totally confused with the Constructor Quiz i have used may different ways to complete this test. Could someone help.

my first code is

public class GoKart { private String mColor = "red"; public GoKart (String mColor){ mColor = Color; } public Gokart gokart = new GoKart("red"); public String getColor() { return mColor; } }

2 Answers

Nick Beukema
Nick Beukema
6,359 Points 
public class GoKart { 
   private String mColor = "red"; 

   public GoKart (String mColor){
      mColor = Color; 
   } 

   public Gokart gokart = new GoKart("red"); 

   public String getColor() { return mColor; };
 }

So the issue is, your constructor needs to reference the correct variable.

public GoKart (String mColor){
   this.mColor = mColor
}

Where 

this.mColor

references the GoKart object's instance variable, mColor.

and

mColor

references the parameter you define and pass a variable through in this line of the constructor

public GoKart (String mColor){

I think that should do it for you.. I'm not 100% sure on your section here.

public Gokart gokart = new GoKart("red");

This might need to be declared outside of the class declaration, but I could be wrong.

Wayne Greenwood
Wayne Greenwood
15,907 Points

Cheers Nick most appreciated thats done it. It now makes sense.

Mukul Gupta
Mukul Gupta
8,760 Points
Mukul Gupta
Mukul Gupta
8,760 Points

When declaring the constructor, use a different variable name than the member variable

public GoKart (String color){
   mColor = color;
}