public class MutilHeadTable extends JTable {
public MutilHeadTable(TableModel tm) {
super(tm);
init();
}
private void init(){
//为每个列添加自定义的RENDER.这个Api设计比较麻烦.
CustomizedHeaderRender r = new CustomizedHeaderRender();
for (int i=0; i< getModel().getColumnCount(); i++) {
TableColumn column = getColumnModel().getColumn(i);
column.setHeaderRenderer(new CustomizedHeaderRender());
}
}
private class CustomizedHeaderRender extends DefaultTableCellRenderer{
public Component getTableCellRendererComponent(JTable table,
Object value, boolean isSelected, boolean hasFocus, int row,
int column) {
if(value!=null && value instanceof String){
StringTokenizer t = new StringTokenizer((String)value,"/");
StringBuffer bf = new StringBuffer();
bf.append("<html>");
while (t.hasMoreElements()){
bf.append(t.nextElement());
if(t.hasMoreElements()){
bf.append("<br>");
}else{
bf.append("</html>");
}
}
return new JLabel(bf.toString());
}
return this;
}
}
public static void main(String[] args) {
JFrame frame = new JFrame("Leaders");
Container contentPane = frame.getContentPane();
String headers[] = {"Line1/line2/line3", "Country"};
String data[][] = {
{"Tony Blair", "England"},
{"Thabo Mbeki", "South Africa"},
};
TableModel model = new DefaultTableModel(data, headers);
MutilHeadTable table = new MutilHeadTable(model);
JScrollPane scrollPane = new JScrollPane (table);
contentPane.add(scrollPane, BorderLayout.CENTER);
frame.setSize(300, 100);
frame.setVisible(true);
}
}
效果图：
