Sorted:

What is the principle behind the implementation of the Spring class loader?

How to resolve the issue of being unable to access the LAN interface after modifying the address in OpenWRT.

What is the usage of the PHP fopen function?

How to check if an index is effective in Oracle?

How to resolve the issue of being unable to connect to the internet after setting up the IP address on CentOS 7?

How to resolve the issue of a failed composite index in Oracle?

What is the function of the “to_date” function in MySQL?

What are the steps for setting up an Android development environment?

How do you view the gateway in Linux using the ‘route’ command?

What are the different propagation mechanisms in Spring transactions?