How can I fix my Pet class to work with the given PetDriver class?

[Bellatrix6]

Homework Statement

Suppose that you are given the following PetDriver class, which includes a main method:




public class PetDriver{
public static void main(String[] args){
int weight = 40;
Pet doggie = new Pet("Rover", weight);
System.out.println("my pet's name is " + doggie.getName());
System.out.println("my pet's weight is " + doggie.getWeight());
}
}

Executing main produces the following output:

my pet's name is Rover
my pet's weight is 40

Complete the Pet class definition, below, so that the main method shown above works correctly.

Homework Equations

The Attempt at a Solution

This is what I tried, but it didn't work:
public class Pet{
private String name;
private int weight;
public Pet(String who, int pounds){
name = who;
weight = pounds;
}
public String getName(){return name;}

public int getWeight(){return weight;}

}

 

[Mark44]

You said it didn't work, but didn't give any further information, such as whether there were compiler errors, and if there were no compiler errors, what output did you get.

This looks like C++ code--is it? The thing that pops out at me is your constructor for your Pet class. You can't use the assignment operator (=) to assign a string to a variable. I haven't done much with C++ for a few years, so I'm not sure whether there are any methods on the String class that you can use to copy a String value to a variable. If there is one, you'll need to use it. If not, you can use some of the older C run-time functions, such as strcpy().

Mark

 

[piercas]

Your attempt at a solution is on the right track, but there are a few errors that are preventing it from working correctly. First, make sure that your Pet class is in the same package as your PetDriver class. This will allow the PetDriver class to access the methods and variables in the Pet class. Additionally, in your PetDriver class, you are calling the constructor for the Pet class, but you are not passing in any arguments. You need to pass in the name and weight of the pet you want to create, like this:

Pet doggie = new Pet("Rover", weight);

Finally, make sure that your Pet class has a default constructor (a constructor with no parameters) in addition to the one you have already defined. This will allow you to create a Pet object without specifying a name or weight, like this:

Pet kitty = new Pet(); // this will use the default constructor and set the name and weight to null and 0, respectively.

Once you make these changes, your code should work correctly. Remember to always test your code and look for any errors or exceptions that may occur. Good luck!