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This article mainly talks about "what is the difference between java process, thread and fiber". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Next, let the editor take you to learn "what is the difference between java processes, threads, and fibers?"

In Java, these short code snippets are typically put into a class and saved to a file with a .java extension; then compiled by a command line or integrated development environment tool, a .class file is generated and the .class file is run to get the results we want.

For example, there is a simple imitation game to open the treasure chest to get the gift program code, refer to the following:

We save it to the system as a file, as shown in the figure.

The class file that has been saved to the Java of the system

In this way, the file contains a small piece of program that we want to run. When you use the command of Java or click the run button of the integrated development environment, the program will run and feedback the relevant information according to the written logic. The running result of OpenBox is shown in the figure.

These seemingly simple operations can give us a better understanding of the following concepts: programs, processes, and threads.

A process is the process of running a program. Generally speaking, one run of a program can produce a process, and the process is a dynamic concept. The operation of the process needs to use the content of the program, more specifically, the operation of the process can not be separated from the program, can not be separated from the special meaning of the text in the program.

In fact, there is a special area for storing these texts in the process, which is called the code text area. There is an one-to-many relationship between programs and processes, that is, a program can run one or more processes at the same time. When you click the run button in the integrated development environment, a process corresponding to OpenBox.java is generated immediately.

With a good understanding of the relationship between the program and the process, the thread can be described and explained. A thread is a smaller first-level partition than a process. A thread can make use of the resources owned by the process and can independently complete a task, such as calculating, outputting display information, and so on. In the operating system that introduces threads, the process is usually regarded as the basic unit of allocating resources, and the thread is regarded as the basic unit of independent operation and scheduling.

There is also an one-to-many relationship between processes and threads, that is, at least one thread in a process corresponds to it. If there are multiple threads in a process at the same time, it is a multithreaded process. When the above OpenBox.java program runs, it not only generates a process, but also produces a single thread corresponding to it. That is, when you run an OpenBox.java program, the process that this behavior produces is a single-threaded process.

The relationship between programs, processes, and threads is shown in the figure.

The relationship between program, process and thread

At this point, I believe you have a deeper understanding of "what is the difference between java process, thread and fiber". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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