JButton button1
JButton button1 is the next component added (lines 43–44). By default, the weightx and weighty values are still zero. The fill variable is set to HORIZONTAL—the component will always fill its area in the horizontal direction. The vertical direction is not filled. The weighty value is zero, so the button will become taller only if another component in the same row has a nonzero weighty value. JButton button1 is located at row 0, column 1. One row and two columns are occupied.
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