Test
3
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Preguntas del test (20)
1An ArrayList<T> collection uses a linked list as its underlying data structure.
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2An ArrayList<T> collection uses [ ] along with an index value to access its members.
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3An ArrayList<T> collection type has an attribute called "length" that provides the occupied size of the collection.
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4An ArrayList<T> collection is faster and more memory efficient than an array.
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5A class that implements an interface must have a concrete implementation of every abstract method in the interface.
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6If a class contains at least one abstract method then the class must be declared as abstract.
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7If a class implements the Comparable<T> interface then it can be sorted by built-in sorts already coded in the Java API.
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8Interfaces can extend other interfaces.
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9An abstract method does not have any concrete code in a set of { }. It does not even have { }.
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10An inner class must be declared private and static.
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11An inner class can access the attributes of the outer class even if they are private.
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12Java allows multiple inheritance.
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13"Early binding" is satisfied at runtime.
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14Object is the parent class for all objects in Java.
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15A method declared as "final" cannot be overridden.
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16"Late binding" is the process of binding a method to an object at runtime. The method bound is determined by the actual type of the object at runtime.
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17When used in a generic class header, the notation "<T extends Root>" means that any type that is of type Root or of any class that extends Root can be provided as a type to this generic class.
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18The type "T" in "GenericClass<T>" cannot be instantiated within the definition of the generic class.
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19A class can contain one or more generic methods even if its class header is declared in the normal way, like "public class IHaveGenericMethods { }", for example.
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20When declaring a generic method, the notation "<T>" must precede any use of the type T in the rest of the method header.
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Información
- Descripción
- Test sobre 3, creado por Ricky Zhang el 18/04/2018.
- Autor
- Ricky Zhang
- Idioma
- English
- Visitas
- 17
- Valoración
- Aún sin valoraciones Valora este test