import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.WindowConstants;
import javax.swing.table.DefaultTableCellRenderer;

public class Test extends JFrame {
    public Test() {
        Container contentPane = getContentPane();

        contentPane.setLayout(new FlowLayout());
        contentPane.add(new JTable(10, 10));
        JTable t = new JTable(10, 10);

        headerRender render = new headerRender();
        t.getTableHeader().setDefaultRenderer(render);
        t.getTableHeader().setPreferredSize(new Dimension(0, 50));
        contentPane.add(new JScrollPane(t));

    }

    public static void main(String args[]) {
        GraphicJavaWindowHandler.launch(new Test(), "Tables and Scrollpanes", 100, 100, 850, 700);
    }
}

class GraphicJavaWindowHandler extends WindowAdapter {
    public static void launch(final JFrame f,
                              String title,
                              final int x,
                              final int y,
                              final int w,
                              int h) {
        f.setTitle(title);
        f.setBounds(x, y, w, h);
        f.setVisible(true);

        f.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);

        f.addWindowListener(new WindowAdapter() {
            public void windowClosed(WindowEvent e) {
                System.exit(0);
            }
        });
    }
}

class headerRender extends DefaultTableCellRenderer {
    public Component getTableCellRendererComponent(JTable table,
                                                   Object value,
                                                   boolean isSelected,
                                                   boolean hasFocus,
                                                   int row,
                                                   int column) {
        label.setText(value.toString());
        label.setBorder(UIManager.getBorder("TableHeader.cellBorder"));
        Dimension d = label.getSize();
        d.height = 36;
        label.setSize(d);
        return label;
    }

    JLabel label = new JLabel();
}