Logical Circuit and logical gates

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Java

I was proposed a project that sounds like this.

Consider a set of logical gates like AND, OR, XOR or NOT. Allow for building any logical circuit by connecting such gates.
Provide input (0/1) to a number of gates and collect the results at the output of some of the gates.
Be able to read the description of the circuit from a file.

Additional information that I was given: I have to build some classes/interfaces allowing to model such circuits.After that, you have to simulate the flow of the input signals to the end nodes and eventually to collect the results on some output connectors.It is not about writing a program to evaluate logical propositions like p&q|r&!p or to write truth tables. Rather you have some signals flowing through connectors and processed at the level of each logical gate.

I was suggested an idea like the one below, for a single AND gate, 2 inputs and a single output. Is this a good approach?

01 public class LogicAnd extends Gate
02 {
03 public LogicAnd(int a, int b, int q) {
04 a_ = a; b_ =b; q_ = q;
05 }
06
07 public void Evaluate(int[] signals) {
08 signals[q_] = signals[a_]&signals[b_];
09 }
10 }

Has anyone done anything of this kind? What would you do, how would you start/shape this problem? I am looking for any help as much as possible, open to hints and solutions, anything is helpful.