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String vs StringBuilder vs StringBuffer in Java
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Difference between JDK, JRE, and JVM.
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Java2
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Explain the Class Loading Mechanism.
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Java3
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What are Bootstrap, Platform, and Application ClassLoaders?
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Java4
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What happens when a Java program starts?
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Java5
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Explain Heap, Stack, Metaspace, PC Register, and Native Method Stack.
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Java6
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How is an object created in Java?
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Java7
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How do you identify a memory leak?
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Java10
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Serial GC vs Parallel GC vs CMS vs G1.
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Java13
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Young Generation vs Old Generation.
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Java14
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Minor GC vs Major GC vs Full GC.
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Java15
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Explain Encapsulation with a real-world example.
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Java16
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Interface vs Abstract Class.
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Java20
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String vs StringBuilder vs StringBuffer.
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Java23
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How is String concatenation optimized?
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Java25
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