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Programming Languages Questions - Java

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Explain the difference between fail-fast and fail-safe iterators in Java.
Programming Languages Java Subjective
Posted: Sep 24, 2025 View Details
What is the difference between ClassNotFoundException and NoClassDefFoundError?
Programming Languages Java Subjective
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Explain Java NIO and its advantages over traditional IO.
Programming Languages Java Subjective
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What is the volatile keyword and when should you use it?
Programming Languages Java Subjective
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Explain the concept of weak references in Java.
Programming Languages Java Subjective
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Which of the following is true about Java 8 default methods?
Programming Languages Java Mcq
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What happens when you call wait() method without synchronization?
Programming Languages Java Mcq
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Which garbage collector is best for low-latency applications?
Programming Languages Java Mcq
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Write a thread-safe Singleton using enum.
Programming Languages Java Subjective
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Implement a custom thread pool executor.
Programming Languages Java Subjective
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What are the different types of class loaders in Java?
Programming Languages Java Subjective
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Explain JIT compilation in Java.
Programming Languages Java Subjective
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Implement Observer pattern in Java.
Programming Languages Java Subjective
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What is the difference between CountDownLatch and CyclicBarrier?
Programming Languages Java Subjective
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Explain the Fork/Join framework in Java.
Programming Languages Java Subjective
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