Quick Answer
Thread safety approaches: make classes stateless (no shared mutable state = automatically thread-safe), use immutable objects (share freely), use synchronized or locks for mutable shared state, use concurrent collections (ConcurrentHashMap), use atomic variables (AtomicInteger), or use ThreadLocal to give each thread its own copy. The safest code avoids shared mutable state entirely.
Answer
Thread safety is achieved using synchronized blocks, locks, atomic variables, and concurrent collections. Prefer immutability and minimize shared mutable state. Use functional programming constructs where possible.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
