Interview Question

What is the Java Memory Model?

The Java Memory Model defines visibility, ordering, and synchronization between threads.

💡 Concept ✅ Quick Revision ☕ Java

Answer

The Java Memory Model defines legal interactions between threads through memory actions and synchronization. • It specifies visibility and ordering rules. • Happens-before relationships guarantee visibility of prior actions. • Programs with data races can observe surprising but specification-constrained results.

Example

Code

class State {
    volatile boolean ready;
    int value;
}

Quick Revision

The Java Memory Model defines visibility, ordering, and synchronization between threads.

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