JTable header not showing
Same problem I have face You have to add the JTable to the JScrollPane then add JscrollPane to JFrame e.g.
JTable table = new JTable();
JScrollPane scrollPane= new JScrollPane(table);
frame.add(scrollPane);
Start by removing
panel.add(table.getTableHeader());
The JTable
is designed to add it's header to the JScrollPane
. An instance of a component can only belong to a one parent/container, the above line is removing it from the scrollpane
Also, change this...
panel.add(table);
To
panel.add(scrollPane);
Best JTable Example (Working smoothly just paste in editor and execute as Java application) with dynamic data :
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
public class TableTest {
private JFrame frame;
private JTable table;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
TableTest window = new TableTest();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public TableTest() {
initialize();
}
/**
* Initialize the contents of the frame.
*/
private void initialize() {
frame = new JFrame();
frame.setBounds(100, 100, 450, 300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(null);
table = new JTable();
DefaultTableModel daDefaultTableModel = new DefaultTableModel(0, 0);
String[] columnNames = new String[] {"Column Header1", "Column Header2", "Column Header3"};
daDefaultTableModel.setColumnIdentifiers(columnNames);
//Dummy data for Table
daDefaultTableModel.addRow(new Object[] {"Test1","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test2","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test3","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test4","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test5","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test6","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test7","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test8","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test9","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test10","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test11","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test12","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test13","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test14","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test15","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test16","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test17","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test18","Test2","Test3"});
daDefaultTableModel.addRow(new Object[] {"Test19","Test2","Test3"});
table.setModel(daDefaultTableModel);
JScrollPane scrollPane = new JScrollPane(table);
scrollPane.setBounds(10, 38, 414, 212);
frame.getContentPane().add(scrollPane);
}
}