PR1-W6-Part1-OOP_Classes&Objects | Baamboozle - Baamboozle

10. What is the output? (3)

2 (Static field count is shared across all objects. Each constructor increments once)

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24. Which access modifier allows visibility only within the same class? (2)

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6. What is the output? (2)

5 (int is primitive → assignment copies the value. Changing y does not affect x.)

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16. Given String s1 = new String("hi"); String s2 = "hi";, what is s1 == s2? (3)

B (new String("hi") creates a separate object on the heap; s2 references the interned literal)

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boom

Lose 50 points!

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gold

Win 50 points!

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rocket

Go to first place!

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baam

Lose 20 points!

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3. What does a class represent in object-oriented programming? (1)

B (A class defines fields and methods. Instances (objects) are created from that blueprint.)

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7. What is the output? (2)

Fido (d1 and d2 refer to the same object → changing through one affects the other.)

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lifesaver

Give 15 points!

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star

Double points!

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fairy

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baam

Lose 5 points!

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11. Which keyword refers to the current instance inside an instance method or constructor? (2)

C. this

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seesaw

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seesaw

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fairy

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lifesaver

Give 15 points!

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1. Which Java keyword is used to create a new object (an instance) of a class? (1)

C. new (Example: Dog d = new Dog();)

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13. What does the expression a == b test when a and b are object references? (3)

B ( == compares references for objects. equals() can be overridden to compare content.)

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Won 5 points

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seesaw

Swap points!

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star

Double points!

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gift

Win 25 points!

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thief

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5. Which of the following best describes encapsulation? (2)

B (Encapsulation uses private fields and public getters/setters or methods to control access)

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15. Given String s1 = "hi"; String s2 = "hi";, what is s1 == s2? (3)

B ( String literals are interned; identical literals refer to the same object in the string pool, so == is true)

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