First, a recruiter from Oracle contacted me. Afterwards, I went for an in-site interview where three people interviewed me. What I didn't like is that the questions were based on specific Java libraries, such as Date or StringBuilder, which I don't use regularly. I couldn't see the API, and therefore, I couldn't solve some exercises. I can say the interviews are poorly designed, attempting to emulate Amazon's in a very deficient way.

Preguntas de ISTQB

Crear un sistema que pruebe ciclos de facturación usando la clase Date.

Invertir las palabras en un string sin usar espacio extra ni otra estructura de datos.