What is java multithreading?
A java thread is an execution path or a control unit within a process; java multi-threading refers to the existence of multiple threads in a process, and multi-threading can improve program execution efficiency.
(Recommended tutorial: java tutorial)
1. Processes and threads:
Process: an ongoing program. Each process execution has an execution sequence, which is an execution path, or a control unit.
Thread: an execution path or a control unit within a process.
The difference between the two:
A process has at least one thread
The process has an independent memory unit during execution, and multiple threads Shared memory;
2. What is multi-threading:
There are multiple threads in a process, which is called multi-threading.
3. Advantages of multi-threading:
Solve the problem of multiple parts running at the same time and improve efficiency
4. Disadvantages of threads :
Too many threads will lead to a reduction in efficiency, because the execution of threads relies on the CPU switching back and forth.
5. Methods to implement multi-threading:
Java can implement multi-threading by inheriting the Thread class and implementing the Runnable interface.
The above is the detailed content of what is java multithreading. For more information, please follow other related articles on the PHP Chinese website!