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JTable with multicolumn header  RSS feed

Chantal Ackermann
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hi all,
I want to create a JTable with column headers that span over three columns. I tried to use the sample code of this site:
but that does not work well: the column header width is computed slightly to wide. Moreover, if I change the intercellspacing of the table, the difference between the column header width and the width of three actual columns gets "really", the header than span over say five or more columns.
I tried to change the algorithm that computes the width in different ways, but that actually changed nothing. I have the suspicion that the column width that is used as the base for the column header width computation is not the actual width that is displayed in the end.
has someone done anything similar? (I am using JDK 1.4 and greater)
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