How to place GUI components in java in the center?

I’m trying to create a mini form, that suppose to look like this: So far I got this: The problem is that I need to have this gap from the left, so that my form will be at the center, but I don’t …

Java JFrame button organization

How do i create a jframe that organizes the text box and jbuttons, with the textbox on top and a 3 by 4 grid layout of buttons 1-10? “TEXT BOX HERE” [1][2][3] [4][5][6] [7][8][9] [(][0][)] This is …