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Explain the difference between process and thread in Java.

Mid Java
Quick Answer Process: independent program with its own memory space, expensive to create and switch, communication via IPC. Thread: lightweight execution unit within a process, shares process memory (heap), cheap to create, communication via shared memory (but needs synchronization). Java threads share heap but each has its own stack, program counter, and registers.

Answer

Process: Independent execution with separate memory.
Thread: Lightweight execution sharing memory within a process.
Threads improve concurrency; processes ensure isolation.
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