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Java Basics: Beyond the Fundamentals
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Module 4
Garbage Collection Internals
1
Understanding GC: Roots, Reachability, and Mark-and-Sweep
Explain GC fundamentals: GC roots, object reachability, and the mark-and-sweep algorithm.
2
Generational Garbage Collection Explained
Describe generational garbage collection and the weak generational hypothesis that motivates it.
3
Garbage Collection Pauses and Application Latency
Explain stop-the-world pauses, safe points, and their impact on application latency.
Garbage Collection Algorithms: A Comparative Analysis
Compare common GC algorithms (e.g., Serial, Parallel, G1, ZGC) and the trade-offs each makes.
Essential GC Tuning Flags
Identify common GC tuning flags (-Xmx, -Xms, -XX:+UseG1GC) and explain their purpose.
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JVM Runtime Data Areas and Object Model
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Core Language Internals: Types, Strings, and Semantics