How to translate many to many with association class

Question

hello
I have found that there is many way to translate this to java code ,could you please tell me what do you think about this. is it right ??is it the best way ??
The relation between A and B is a bidirectional
Class A:
-idA
ClassB:
-idB
Class C:
-date
Class A {
private int  idA;
private C[] c;
public A(){}
//getters and setters and other methods
Class B {
private int  idB;
private C[] c;
public B(){}
//getters and setters and other methods
Class C {
private int  idA;
private int  idB;
private Date date;
public C(){}
//getters and setters and other methods
}thank you in advance

Answer 1

What do you need the IDs for? I prefer this:
Class A {
    private Set<C> cees = new HashSet<C>();
    public A(){}
    //other methods
Class B {
    private Set<C> cees = new HashSet<C>();
    public B(){}
    //other methods
Class C {
    private final A a;
    private final B b;
    private Date date;
    public C(final A a, final B b){
        this.a = a;
        this.b = b;
    //other methods
}