Java.Reflect Quiz – Java.Reflect Multiple Choice Questions and Answers

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Java.Reflect Quiz – Java.Reflect Multiple Choice Questions and Answers: Hello aspirants..!! Willing to expertise your skill/ knowledge on “Java.Reflect”? then, what are you waiting for? Look over this article and take a test on Java.Reflect Multiple Choice Questions and Answers. Here, we have provided the Frequently Asked Java.Reflect Questions and Answers for your sake. Thus, you guys are requested to go through the entire article and collect the Important Java.Reflect MCQ Questions. We have collected the Java.Reflect Quiz Questions & Answers and listed them in Objective format that will brush up your concepts of Java.Reflect package in Java.

Java.Reflect Quiz – Java.Reflect Multiple Choice Questions and Answers

Exercise Java.Reflect MCQ Quiz Questions & Answers

Which method is used to create a new instance of a class using Java Reflection?
a) newInstance()
b) createInstance()
c) getObject()
d) makeInstance()
Answer: a) newInstance()
Explanation: The newInstance() method is used to create a new instance of a class using Java Reflection. This method is declared in the Class class and can be used to create an instance of any class that has a default constructor.

What is the difference between a Class object and an instance of a class?
a) A Class object is an instance of a class
b) A Class object is a template for creating instances of a class
c) An instance of a class is a template for creating Class objects
d) There is no difference between a Class object and an instance of a class
Answer: b) A Class object is a template for creating instances of a class
Explanation: A Class object is a representation of a class in Java. It contains information about the class such as its name, superclass, interfaces, fields, and methods. An instance of a class, on the other hand, is an object that is created from a class using the new keyword.

Which method is used to get the class loader of a class in Java?
a) getClassLoader()
b) getClass()
c) getLoader()
d) getClassObj()
Answer: a) getClassLoader()
Explanation: The getClassLoader() method is used to get the class loader of a class in Java. This method is declared in the Class class and returns a ClassLoader object that can be used to load classes and resources.

Which method is used to get the value of a field using Java Reflection?
a) getValue()
b) getField()
c) readValue()
d) retrieveField()
Answer: a) getValue()
Explanation: The getValue() method is used to get the value of a field using Java Reflection. This method is declared in the Field class and can be used to get the value of any field, regardless of its access level.

Which method is used to set the value of a field using Java Reflection?
a) setValue()
b) setField()
c) writeValue()
d) modifyField()
Answer: a) setValue()
Explanation: The setValue() method is used to set the value of a field using Java Reflection. This method is declared in the Field class and can be used to set the value of any field, regardless of its access level.

What is the purpose of the java.lang.reflect package in Java?
a) To provide a way to manipulate objects at runtime
b) To provide a way to create new classes at runtime
c) To provide a way to compile Java code at runtime
d) To provide a way to execute bytecode at runtime
Answer: a) To provide a way to manipulate objects at runtime
Explanation: The java.lang.reflect package in Java provides a way to manipulate objects at runtime using reflection. Reflection allows you to inspect and modify the runtime behavior of an application.

Which method is used to get the methods of a class using Java Reflection?
a) getMethods()
b) getDeclaredMethods()
c) retrieveMethods()
d) obtainMethods()
Answer: a) getMethods()
Explanation: The getMethods() method is used to get the methods of a class using Java Reflection. This method is declared in the Class class and returns an array of Method objects that represent the methods of the class, including those inherited from its superclass.

Which method is used to get the constructors of a class using Java Reflection?
a) getConstructors()
b) getDeclaredConstructors()
c) retrieveConstructors()
d) obtainConstructors()
Answer: a) getConstructors()
Explanation: The getConstructors() method is used to get the constructors of a class using Java Reflection. This method is declared in the Class class and returns an array of Constructor objects that represent the public constructors of the class.

Which method is used to get the fields of a class using Java Reflection?
a) getFields()
b) getDeclaredFields()
c) retrieveFields()
d) obtainFields()
Answer: a) getFields()
Explanation: The getFields() method is used to get the fields of a class using Java Reflection. This method is declared in the Class class and returns an array of Field objects that represent the public fields of the class, including those inherited from its superclass.

Which method is used to invoke a method on an object using Java Reflection?
a) invoke()
b) callMethod()
c) execute()
d) run()
Answer: a) invoke()
Explanation: The invoke() method is used to invoke a method on an object using Java Reflection. This method is declared in the Method class and can be used to call any method, regardless of its access level.

Which method is used to determine if a class is an interface using Java Reflection?
a) isInterface()
b) getClassType()
c) isClass()
d) isAbstract()
Answer: a) isInterface()
Explanation: The isInterface() method is used to determine if a class is an interface using Java Reflection. This method is declared in the Class class and returns true if the class is an interface, false otherwise.

Which method is used to determine if a class is an array using Java Reflection?
a) isArray()
b) getClassType()
c) isClass()
d) isAbstract()
Answer: a) isArray()
Explanation: The isArray() method is used to determine if a class is an array using Java Reflection. This method is declared in the Class class and returns true if the class is an array, false otherwise.

Which method is used to get the superclass of a class using Java Reflection?
a) getSuperClass()
b) getSuper()
c) getParentClass()
d) getAncestor()
Answer: a) getSuperClass()
Explanation: The getSuperClass() method is used to get the superclass of a class using Java Reflection. This method is declared in the Class class and returns the Class object that represents the superclass of the class.

Which method is used to get the interfaces implemented by a class using Java Reflection?
a) getInterfaces()
b) getImplementedInterfaces()
c) retrieveInterfaces()
d) obtainInterfaces()
Answer: a) getInterfaces()
Explanation: The getInterfaces() method is used to get the interfaces implemented by a class using Java Reflection. This method is declared in the Class class and returns an array of Class objects that represent the interfaces implemented by the class.

Which method is used to determine if a method is abstract using Java Reflection?
a) isAbstract()
b) isStatic()
c) isFinal()
d) isNative()
Answer: a) isAbstract()
Explanation: The isAbstract() method is used to determine if a method is abstract using Java Reflection. This method is declared in the Method class and returns true if the method is abstract, false otherwise.

Which method is used to determine if a field is static using Java Reflection?
a) isStatic()
b) isFinal()
c) isVolatile()
d) isTransient()
Answer: a) isStatic()
Explanation: The isStatic() method is used to determine if a field is static using Java Reflection. This method is declared in the Field class and returns true if the field is static, false otherwise.

Which method is used to determine if a field is final using Java Reflection?
a) isFinal()
b) isStatic()
c) isVolatile()
d) isTransient()

Answer: a) isFinal()
Explanation: The isFinal() method is used to determine if a field is final using Java Reflection. This method is declared in the Field class and returns true if the field is final, false otherwise.

Which method is used to set the value of a field on an object using Java Reflection?
a) set()
b) setValue()
c) assign()
d) modify()
Answer: b) setValue()
Explanation: The setValue() method is used to set the value of a field on an object using Java Reflection. This method is declared in the Field class and can be used to set the value of any field, regardless of its access level.

Which method is used to create a new instance of a class using Java Reflection?
a) newInstance()
b) createInstance()
c) makeInstance()
d) generateInstance()
Answer: a) newInstance()
Explanation: The newInstance() method is used to create a new instance of a class using Java Reflection. This method is declared in the Class class and can be used to create new instances of any class that has a public no-argument constructor.

Which method is used to get the value of a field on an object using Java Reflection?
a) get()
b) getValue()
c) retrieve()
d) obtain()
Answer: b) getValue()
Explanation: The getValue() method is used to get the value of a field on an object using Java Reflection. This method is declared in the Field class and can be used to get the value of any field, regardless of its access level.

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