Java Programming Quiz 2: Class Declaration and Access Modifiers

Quiz 2Due Sep 15, 2023 at 11:45amPoints 40Questions 20Time Limit 75 MinutesQuestion 12 ptsHow do you declare a class in Java?class MyClass;class = new MyClass();class MyClass {}MyClass class = new MyClass(); Question 22 ptsWhat is the purpose of a constructor in a class?To initialize static variablesTo create an object of the classTo define methodsTo handle exceptionsQuestion 32 ptsHow do you instantiate an object of a class in Java?new Object myObject = Object();myObject = new Object;Object myObject = new Object();create Object myObject; Question 42 ptsWhat is the default access modifier for class members if notspecified?publicprivateprotectedpackage-privateQuestion 52 ptsWhich keyword is used to refer to the current instance of the class?thiscurrentselfinstance Question 62 ptsWhat is the role of the 'static' keyword for class members?It makes the member immutableIt allows access without creating an objectIt restricts access to the memberIt is used for dynamic memory allocationQuestion 72 ptsHow do you declare an instance variable in a class?var myVariable;variable myVariable;int myVariable;type myVariable; Question 82 ptsWhat is the significance of the 'final keyword for a class?.It prevents the class from being extendedIt makes the class abstractIt allows the class to be modifiedIt marks the class as deprecatedQuestion 92 ptsHow do you call a method of an object in Java?myObject.callMethod();callMethod(myObject);myObject.methodCall;methodCall(myObject); Question 102 ptsWhat is method overloading in Java?Defining multiple methods with the same name in a classOverriding methods in a subclassCalling a method from another methodDeclaring methods in an interfaceQuestion 112 ptsHow is method overriding achieved in Java?Using the 'extends' keywordBy defining a new method in the subclass with the samesignatureBy using the 'override' keywordIt is not possible in Java Question 122 ptsWhat is encapsulation in Java?Combining multiple classes into oneHiding the internal details of an object and restricting accessCreating objects from a classImplementing abstract classesQuestion 132 ptsWhich keyword is used to prevent method overriding in Java?Cfinalabstractoverrideprevent Question 142 ptsWhat is the purpose of the 'this' keyword in Java?It refers to the previous object in memoryIt refers to the current objectIt is used to create threadsIt represents a null valueQuestion 152 ptsHow do you declare a constant in a class in Java?constant int X = 10;const int X = 10;final int X = 10;var X = 10; Question 162 ptsWhat is the purpose of the "abstract" keyword for a class?It allows the class to be instantiatedIt marks the class as staticIt prevents the class from being extendedIt makes the class incomplete and must be extendedQuestion 172 ptsWhat does the 'package-private' access modifier mean for a classmember?It can only be accessed within the same packageIt is accessible from any classIt is accessible only within the same classIt is visible to all classes in different packages Question 182 ptsHow do you achieve method overriding in Java?By defining multiple methods with the same name in a classBy using the 'implements' keywordBy declaring a method in an interfaceBy defining a new method in the subclass with the samesignatureQuestion 192 ptsWhat is the role of the "extends" keyword in Java?It allows a class to be instantiatedIt denotes the superclass of a classIt defines a new classIt specifies the access modifier of a class Question 202 ptsHow do you prevent a class from being subclassed in Java?Using the 'static' keywordBy declaring it as 'final'By using the 'abstract' keywordIt is not possible in Java