how can i reference the instance of an object?

Question

Here's the thing i create a new instance of a class in a file then i'm trying to reference that specific instance in another file.

This is the initilization of the object in RegistroUI.

CuentaBancaria Cuenta = new CuentaBancaria(nombre);

This is my code trying to reference that same class in IngresoUI.

textBienvenido.setText("BIENVENID@ USUARIO" + Cuenta.getNombre());

All of this is in the same package and written in java. Please any idea will help :D

I can't create another object because it won't have the same values for attributes and i don't need to import because is already in the same package.

Answer 1

To reference an instance of an object, you need to pass it somehow into IngresoUI. For example via injection in constructor of IngresoUI.

CuentaBancaria cuenta;
IngresoUI(CuentaBancaria cuenta){
    this.cuenta=cuenta
}

Another method is to inject IngresoUI into RegistroUI and then pass CuentaBancaria cuenta into some method of IngresoUI.

IngresoUI ingresoUI;
RegistroUI( IngresoUI ingresoUI){
    this.ingresoUI = ingresoUI;
}
void someMethodOfRegistroUI(){ //Method where you create CuentaBancaria 
    int nobre = 10;
    CuentaBancaria cuenta = new CuentaBancaria(nombre);
    ingresoUI.someMethodOfIngresoUI(cuenta);//call a method of IngresoUI
    //where you need CuentaBancaria cuenta;
}