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Difference between Thread and Process

Difference between Thread and Process

Threads and processes are two important elements of computer programming. While they may seem similar, there are some key differences between them. In this blog post, we’ll explore those differences and discuss the benefits of using each one. Stay tuned!

What is Thread?

  • Thread is a lightweight process, also known as a lightweight process, that shares the same address space as the parent process. Threads share the same code and data segments as the processes that created them. Threads have their own stack but they can access shared data in the address space of the process that created them. Threads can be created within the same process or different processes.
  • Threads within the same process are known as threads of execution. Threads across different processes are known as processes of execution. Processes can communicate with each other through inter-process communication (IPC). Threads can communicate with each other through inter-thread communication (ITC). Threads can be created in two ways: thread-safe and non-thread-safe. Thread-safe means that a thread can be safely accessed by multiple threads at the same time.
  • Non-thread-safe means that only one thread can safely access a resource at a time. Thread safety is important when working with shared resources. A process is an instance of a program that is being executed. A program is a set of instructions that tells a computer what to do. A thread is a unit of execution within a process. A process can have multiple threads.

What is Process?

Processes are programs that are executed by the computer. Every process has its own address space, which is a region of memory that it can access. Processes are executed sequentially, meaning that each instruction in a process is executed one after the other. However, processes can also be executed concurrently, meaning that multiple processes can be running at the same time.

Processes can communicate with each other through inter-process communication (IPC) mechanisms, such as pipes and sockets. When a process terminates, it is said to have exited. Processes can also be terminated by the operating system if they fail to obey the operating system’s rules or if they try to access memory that they are not allowed to access.

Difference between Thread and Process

Threads and processes are both used to execute code, but they differ in several important ways. Most notably, threads share a common memory space, while separate processes have their own memory space. This means that threads can more easily communicate with each other, which is why they’re often used for tasks that need to be synchronized (such as animation).

Processes, on the other hand, are more isolated and are therefore better suited for tasks that don’t need to share data. Another key difference is that threads are lightweight and require fewer resources than processes. Finally, threads can be created and destroyed more quickly than processes. For these reasons, threads are generally preferable when coding for performance.


The two concepts of thread and process are important to understand in order to create efficient code. In the context of this blog post, we’ve looked at how threads can be used to run multiple tasks concurrently, while processes are best suited for managing a single task. We’ve also seen that Java provides several methods for starting and stopping threads and processes. As always, experimentation is key when learning about these concepts.

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