java - 用了ThreadLocal，Connection对象是不是只有一个？

Question

用了ThreadLocal，connection对象是不是只有一个？

每个线程的threadLocals中保存的都是connection对象的副本？

这样的理解是正确的么？

connection对象可以共用么？

Answer 1

With ThreadLocal connection, it is not the same.
Every thread keeps a copy of itself.
Connection objects are generally used by a single thread. No concurrent calls across threads.

Answer 2

"Each thread keeps a copy of itself", why not use a connection pool to manage it?