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AP COMPUTER SCIENCE A UNIT 1 EXAM QUESTIONS AND ANSWERS ALREADY PASSED What are the main primitive data types in Java, and what are they used for? The main primitive data types in Java are `int` (for integers), `double` (for floating-point numbers), `boolean` (for true/false values), `char` (for single characters), `byte`, `short`, `long`, and `float`. These are used to store basic data values directly in memory. Consider the following code segment: ```java int x = 5; int y = ...

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Java Interview Review; Questions and Answers 100% Pass What is the difference between an Interface and an Abstract class? Correct answer-"An abstract class can have instance methods that implement a default behavior. An Interface can only declare constants and instance methods, but cannot implement default behavior and all methods are implicitly abstract. An interface has all public members and no implementation. An abstract class is a class which may have the usual flavors of class ...

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Java Programming Study Guide; Questions and Answers 100% Pass super CORRECT ANSWER-A call to a superclass constructor. subclass method CORRECT ANSWER-Must use the same method name and the same parameter types to override a superclass method. instanceof operator CORRECT ANSWER-Used to test whether an object belongs to a particular type. overloaded method CORRECT ANSWER-A subclass method that uses the same method name but different parameter types for a method that appears in its super...

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