Question

Every time I create a new Dog object on a main Java class, I am unable to replace “null” (which represents the String Name variable from the Dog class) with the string I want. Here is the Class:

private String Name;
private int Age;

public Dog(String Name, int Age) //Constructor {
    this.Name =(String) Name;
    this.Age = Age;
}

public int getAge() {
    return Age;
}

public void setAge(int Age) {
    this.Age = Age;
}

public String getName() {
    return Name;
}

public void setName(String Name) {
    this.Name = Name;
}

Answer 1

Try Dog dog1 = new Dog("James", 2); instead. The string literal has to be enclosed in double quotes, else, it’ll be treated as a variable.

or, add

String James = “Name of the dog”;

before instantiating the Dog with Dog dog1 = new Dog(James, 2);