When does Java declare the static method

Source: Internet
Author: User

1. The frequently used method, which can be declared as static, eliminates the memory space of each new object, because a new object is required to call this method because it is not a static method. But it also produces multithreaded access to thread safety issues

Like what:

2. When a method or variable needs to be initialized when the class loader loads the class, it is declared as static. the static variable allocates memory when the project starts, until the program ends freeing the memory. static and const variables are allocated memory when the project is started, and are not freed after the method call.

3. When declared as a static method, there is only one copy of the data in memory. Therefore, we should pay attention to the thread safety problem, need to add synchronous processing. Threads will wait for access and will have a thread security issue.

When does Java declare the static method

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.