MainClass.java Source code

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Here is the source code for MainClass.java

Source

import java.awt.BorderLayout;
import java.awt.Component;

import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;

public class MainClass {
    public static void main(String args[]) {
        String rows[][] = { { "A", "a" }, { "B", "b" }, { "E", "e" } };
        String headers[] = { "Upper", "Lower" };

        JFrame frame = new JFrame("Label Header");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JTable table = new JTable(rows, headers);
        JScrollPane scrollPane = new JScrollPane(table);

        Border headerBorder = UIManager.getBorder("TableHeader.cellBorder");

        JLabel headerLabel1 = new JLabel(headers[0], JLabel.CENTER);
        headerLabel1.setBorder(headerBorder);
        JLabel headerLabel2 = new JLabel(headers[1], JLabel.CENTER);
        headerLabel2.setBorder(headerBorder);

        TableCellRenderer renderer = new JComponentTableCellRenderer();

        TableColumnModel columnModel = table.getColumnModel();

        TableColumn column0 = columnModel.getColumn(0);
        TableColumn column1 = columnModel.getColumn(1);

        column0.setHeaderRenderer(renderer);
        column0.setHeaderValue(headerLabel1);

        column1.setHeaderRenderer(renderer);
        column1.setHeaderValue(headerLabel2);

        frame.add(scrollPane, BorderLayout.CENTER);
        frame.setSize(300, 150);
        frame.setVisible(true);
    }
}

class JComponentTableCellRenderer implements TableCellRenderer {
    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,
            int row, int column) {
        return (JComponent) value;
    }
}