Core java Interview Question and Answer By Vivek Part -4

#JavaInterface
#StaticInterfaceMethod
#InterfaceNotFinal
#MarkerInterface
#AlternativesToMarkerInterface
#AnnotationsVsMarkerInterfaces
#AbstractClassVsInterface
#InterfaceModifiers
#CastingToInterface
#FinalVariable
#FinalClass
#FinalMethod
#ProhibitInheritance
#IntegerClassFinal
#BlankFinalVariable
#InitializeBlankFinalVariable
#FinalMainMethod
#JavaPackagePurpose
#JavaLangPackage
#MostImportantJavaClass
61. What is an interface in Java?
62. Is it allowed to mark an interface method as static?
63. Why an Interface cannot be marked as final in Java?
64. What is a marker interface?
65. What can we use instead of Marker interface?
66. How Annotations are better than Marker Interfaces?
67. What is the difference between abstract class and interface in Java?
68. Does Java allow us to use private and protected modifiers for
variables in interfaces?
69. How can we cast to an object reference to an interface reference?
Final
70. How can you change the value of a final variable in Java?
71. Can a class be marked final in Java?
72. How can we create a final method in Java?
73. How can we prohibit inheritance in Java?
74. Why Integer class in final in Java?
75. What is a blank final variable in Java?
76. How can we initialize a blank final variable?
77. Is it allowed to declare main method as final?
Package
78. What is the purpose of package in Java?
79. What is java.lang package?
80. Which is the most important class in Java?
What is an interface in Java? - 00:00
Is it allowed to mark an interface method as static? - 00:27
Why an Interface cannot be marked as final in Java? - 00:54
What is a marker interface? - 01:21
What can we use instead of Marker interface? - 01:48
How Annotations are better than Marker Interfaces? - 02:15
What is the difference between abstract class and interface in Java? - 02:42
Does Java allow us to use private and protected modifiers for variables in interfaces? - 03:09
How can we cast an object reference to an interface reference? - 03:36
How can you change the value of a final variable in Java? - 04:03
Can a class be marked final in Java? - 04:30
How can we create a final method in Java? - 04:57
How can we prohibit inheritance in Java? - 05:24
Why is the Integer class final in Java? - 05:51
What is a blank final variable in Java? - 06:18
How can we initialize a blank final variable? - 06:45
Is it allowed to declare the main method as final? - 07:12
What is the purpose of a package in Java? - 07:39
What is the java.lang package? - 08:06
Which is the most important class in Java? - 08:33

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