A phenomenon that is found when Java reads a database field

Found in the morning a network called "Handsome!" is no need for a reason "of a person, in the background can only see" Handsome! is no need to Reason "," by "word is not displayed.

The analysis found that in the Access database, the name of this field is 15, because I know that in access, the length of 15 represents the maximum 15 characters that can be stored in Chinese or English. But "Handsome!" There is no reason why "only 8 characters are displayed when only 7 are displayed."

I think maybe because in Java JDBC, the length of a Chinese character is equal to the length of two English characters, according to the set length of 15 in the table, so only 7 characters are read out.

This is just my speculation, and that's what the reality shows.

A phenomenon that is found when Java reads a database field