Hi guys, so I'm going through a tutorial and they're provided the following code.

public class Puppy {
public Puppy() {
}

public Puppy(String name) {
// This constructor has one parameter, name.
}
}

I can see Puppy is a public class, it's not static or void, void means the class doesn't return a value. Can classes use void ? not sure about void and static yet.

So then there's public Puppy, is this a sub class, method or a constructor ? then there's public Puppy (string name) now I know this is a user created constructor.

So, in the case of the Puppy class above

public Puppy() {
} 

is a default constructor, so what it will use if you create the object without passing in a string for the name.

The next one is an overloaded constructor that takes a string, ideally in this case so you can give the puppy a name.

Okay thank you, I thought default constructors are created automatically, but this depends on the IDE I bet ? if I were to use the new keyword to create an object using notepad and run that in cmd, it would give me an error ?

Yes, without specifying one a Default no argument constructor does exist for classes, but if you define a constructor (like the one taking a name), then the no argument constructor can no longer be used unless you also define that.

Thank you, methods are used for calculations and such and therefore return a value, so when a method is called are there parameters that say return the value into these variables ?

the variables are then used within the class for some reason or another.