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hi I've been working this for 2 days and even google it but I can't figured the right answer.
I can check STRING if it is empty.
here is my code





private void...

Hi I'm new in java.
I have my mysql code with making the PRIMARY KEY NOT NULL (which is the ITEM CODE) but when I tested it in java, it accepts EMPTY VALUE.
How I can prompt the user that the ITEM...

What I mean for "connecting" is retrieving my data from MYSQL and place them into the JCOMBOBOX then whatever the user choose it will be saved :)
Thanks in advance :)

Hello, I'm new in java.

How I can connect mysql to JCombobox?

I already researched it but I really don't understand.


My JCombobox is inventcateg
my table is category
the column that I...