Does Java allow us to use private and protected modifiers for variables in interfaces? How can we cast to an object reference to an interface reference? How can you change the value of a final variable in Java? Can a class be marked final in Java? How can we create a final method in Java? How can we prohibit inheritance in Java? Why Integer class in final in Java? What is a blank final variable in Java? How can we initialize a blank final variable? Is it allowed to declare main method as final? What is the purpose of package in Java? What is java.lang package? Which is the most important class in Java? Is it mandatory to import java.lang package every time?Can you import same package or class twice in your class?What is a static import in Java? What is the difference between import static com.test.Fooclass and import com.test.Fooclass? What is 

Locale in Java? How will you use a specific Locale in Java?What is the serialization? What is the purpose of serialization? What is Deserialization? Explain the concept of Inheritance? Which class in Java is superclass of every other class? Why Java does not support multiple inheritance? In OOPS, what is meant by composition? How aggregation and composition are different concepts? Why there are no pointers in Java? If there are no pointers in Java, then why do we get NullPointerException?. What is the purpose of 'super' keyword in java?. Is it possible to use this() and super() both in same constructor? What is the meaning of object cloning in Java?. In Java, why do we use static variable? Why it is not a good practice to create static variables in Java?

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Lets go through each of your questions Private and Protected Modifiers in Interfaces In Java all variables declared in an interface are implicitly public static and final They are constants and cannot ... View the full answer