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import java.awt.Component;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
public class Main {
public Main() {
JTable table = new JTable(3, 3);
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
for(int i=0;i<table.getColumnCount();i++){
DefaultTableColumnModel colModel = (DefaultTableColumnModel) table.getColumnModel();
TableColumn col = colModel.getColumn(i);
int width = 0;
TableCellRenderer renderer = col.getHeaderRenderer();
if (renderer == null) {
renderer = table.getTableHeader().getDefaultRenderer();
}
Component comp = renderer.getTableCellRendererComponent(table, col.getHeaderValue(), false,
false, 0, 0);
width = comp.getPreferredSize().width;
col.setPreferredWidth(width+2);
}
JFrame f = new JFrame();
f.add(new JScrollPane(table));
f.setSize(300, 300);
f.setVisible(true);
}
public static void main(String[] argv) {
new Main();
}
}
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