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From Learn Java.
I’ve been struggling with this for days 
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https://www.codecademy.com/en/courses/learn-java/lessons/object-oriented-programming/exercises/classes-instance-variables?action=resume
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Error message: Did you create an instance variable called age? Place it inside of the class, but before the Dog constructor.
Didn’t I do that though?
```public class Dog{
//instance variable for age of dog
int age;
public Dog() { //constructor method for Dog class
}
public static void main(String[] args) {
}
}
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