Oracle Certified Professional Java SE 8 Programmer Practice Test
Gana confianza para Oracle Certified Professional Java SE 8 Programmer. Practica los conceptos, comprende las respuestas y refuerza tus conocimientos pregunta a pregunta.
Probar una preguntaDescripción y detalles del examen
Oracle Java SE 8 programmer certification covering Java basics, OOP, generics, lambda expressions, streams, and Java 8 language features. Administered by Oracle as a linear format exam. Key domains include Java Basics, Working with Inheritance, Working with Methods and Encapsulation and Working with Selected Classes from the Java API. The exam consists of 80 questions over 150 minutes.
Preguntas de Muestra
Elige una respuesta y consulta la explicación para ver cómo funciona la práctica.
Iris is reviewing a Java 8 pricing module before a certification-style code audit. The code contains assert balance >= 0 : balance; in production, but assertions are not enabled on the JVM. What happens when balance is negative?
Elena is reviewing a Java 8 billing module before a certification-style code audit. An ExecutorService runs Callable task = () -> 42. How does the caller obtain the value?
Iris is reviewing a Java 8 inventory module before a certification-style code audit. A TreeSet stores Ticket objects. The class does not implement Comparable and no Comparator is supplied. What happens when the second Ticket is added?
Mateo is reviewing a Java 8 catalog module before a certification-style code audit. A stream contains List> batches and must produce a stream of each String. Which operation is correct?
Jon is reviewing a Java 8 trading module before a certification-style code audit. Two threads each hold one lock and wait forever for the other's lock. Which condition is this?
Oportunidades profesionales y salario
Los rangos son cifras del mercado de EE. UU. salvo que se muestre un rango local.
Qué temas cubre este examen
Usa las ponderaciones publicadas de los dominios para planificar tu estudio. Los resultados de práctica no predicen tu puntuación en el examen de certificación.