This article explains why a write to a volatile variable in Java establishes a happens‑before relationship with a subsequent read in another thread, detailing the visibility rules, ordering constraints with ordinary variables, and the transitive nature of these guarantees.
This article demystifies Java's method‑parameter passing by analyzing code examples with primitives, strings, and objects, illustrating how the JVM copies values—including reference addresses—so that arrays appear mutable while reassigning a String or object reference does not affect the original variable.
This article explains how Java’s synchronized keyword relies on JVM monitorenter/monitorexit instructions to enforce strong memory consistency, compares execution results with and without synchronization, and details the underlying memory semantics, benefits, and performance drawbacks.
This article explains the Java volatile keyword, covering its memory visibility and ordering guarantees, how it interacts with the Java Memory Model, common pitfalls such as lack of atomicity, and practical usage examples like flag signaling and double‑checked locking in concurrent programming.
This article dissects a Java interview question about swapping two Integer variables, explaining Java's pass‑by‑value semantics, the difference between handle‑based and direct pointer object access, Integer immutability, autoboxing, the IntegerCache mechanism, and how reflection can (or cannot) modify private final fields.
