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Answer» The terms process and thread are often used in multithreading in Java. A major difference between a process and a thread is that a process is a program that is currently executing while a thread is a subpart of the process. The differences between a process and a thread in detail are given as follows: Process
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A process is a program that is currently executing.
| A thread is a subpart of the process.
| A process is also KNOWN as a heavyweight task.
| A thread is also known as a lightweight task.
| Communication between TWO processes is quite complicated and expensive.
| Communication between two threads is comparatively less expensive.
| All the processes have a separate address space as they are individual entities.
| The threads of a single process share the address space of the process as they are a PART of the process.
| Context switching between two processes is quite expensive.
| Context switching between two threads is less expensive than that between processes.
| An individual process has its own global variables, address space, files, accounting information etc.
| A thread has its own stack, register and program counter. The rest of the components are shared by all the threads of a process.
| A computer SYSTEM can run multiple processes concurrently in process multitasking.
| A computer system can run multiple threads of a program concurrently in thread multitasking.
| Java does not CONTROL process multitasking.
| Java does controls thread multitasking.
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