☕️ #JavaQuiz Challenge! ☕️
In Java, which exception is thrown when an application tries to use `null` in a case where an object is required?
A) `ClassCastException` 📚
B) `NullPointerException` 🚫
C) `IndexOutOfBoundsException` 📏
D) `IllegalArgumentException` ❌
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☕️ #JavaQuiz Challenge! ☕️
In Java, which method of the `Object` class is used to create and return a copy of the object?
A) `clone()` 🧬
B) `copy()` 📋
C) `duplicate()` 🔄
D) `replicate()` 🧪
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☕️#JavaQuiz Challenge!
In Java, what does the `transient` keyword indicate when applied to a variable?
A) The variable cannot be serialized.
B) The variable is immutable.
C) The variable cannot be accessed outside its class.
D) The variable is initialized with a default value.
☕️ #JavaQuiz Time! ☕️
Which keyword in Java is used to define a variable that can hold a reference to an object of any type? 🤔
A) `var` 🆕
B) `object` 🧱
C) `any` 🌐
D) `Object` 🧩
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☕️ #JavaQuiz Time! ☕️
Which method in Java is used to compare two strings for equality, ignoring case differences? 🤔
A) `compareTo()` 📏
B) `equalsIgnoreCase()` 🔤
C) `contentEquals()` 📄
D) `equals()` ✅
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☕️ #JavaQuiz Time! ☕️
Which of these methods is used to start the execution of a thread in Java? 🤔
A) `start()` 🚀
B) `run()` 🏃♂️
C) `begin()` 🟢
D) `init()` 🔄
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☕️ #JavaQuiz Time! ☕️
Which Java keyword is used to prevent a class from being subclassed? 🤔
A) `static` 🚫
B) `final` 🔒
C) `abstract` 🌐
D) `synchronized` 🔄
Comment your answer and let’s discuss Java best practices! 👇
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