General principle to choose the location of a parameter (attribute) in a class

Could you talk to me a general principle to choose the location of a parameter (attribute) in a class?

For example, I can have a class:

class A {
     X x;
     Y y;
     A (X x, Y y) {...}
     void method() {...}
}

Way to use:

A a = new A(x, y);
a.method();

Or I can have a class:

class B {
     X x;
     B (X x) {...}
     void method(Y y) {...}
}

Way to use:

B b = new B(x);
b.method(y);

To rephrase the question: what should I incapsulating and what should I leave as part of the interface?