Quick Answer
Thread safety means code works correctly when accessed by multiple threads concurrently. Strategies: immutability (immutable objects need no synchronization), synchronized methods/blocks, java.util.concurrent atomic classes, concurrent collections, ThreadLocal (each thread has its own copy). The best code is stateless or uses immutable shared state - requires no synchronization at all.
Answer
Use synchronization, locks, atomic variables, and concurrent collections. Avoid shared mutable state. Design carefully for safe concurrent execution.
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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.
