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Java Java Objects (Retired) Meet Objects Constructors

Posted by Jhaycea Parayno
Jhaycea Parayno
1,350 Points

I'm stuck with this question can anyone please post the answer and explain it.

Add a public constructor to the GoKart.java class that allows the parameter color to be passed in. In the constructor store the argument color in the private color field.

GoKart.java 
public class GoKart {
  private String mColor = "red";

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

  public String getColor() {
    return mColor;
  }
}
Jorge Paredes Cimadevilla
Jorge Paredes Cimadevilla
3,068 Points
Jorge Paredes Cimadevilla
Jorge Paredes Cimadevilla
3,068 Points

A constructor is a method within a class that allows you to create objects of that class.

In this specific case we want to create GoKart objects.

Declaring a constructor is similar to declaring a method, except that constructors do not have a return type.

We want our constructor to be public, and a color parameter to be passed in.

We also want the color parameter that we passed to be stored in our mColor private variable.

In this particular case then, our GoKart constructor would look like this:

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

1 Answer

Pauliina K
Pauliina K
1,973 Points
Pauliina K
Pauliina K
1,973 Points

A constructor makes it possible to create objects of a specific class. In this example we want to make more GoKarts, but in different colors.

It should look something like this:

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

What this means is: it's a public class, so everyone can access it. And it's called the same as the class, GoKart, because we are making new GoKarts, right? Its parameter is -color-, which is a string, and on the line under we declare that -color- is the same as mColor (thereby storing it in the private variable). Also, color is written with lowercase letters. Does this make sense?