How to set contents begin at the first line?

Question

I created a JPanel setting CENTER, then use GridBagLayout and want contents begin at the top, not in the center. I try using anchor, but it doesn't work. Please help me sort it out. Thanks.
Here my code:
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
public class gridBagLayoutTest extends JFrame{
    public gridBagLayoutTest() {
      super("test");
      Container con = this.getContentPane();
      JPanel jp=new JPanel();
      GridBagLayout gb=new GridBagLayout();
      GridBagConstraints c=new GridBagConstraints();
      c.fill=GridBagConstraints.BOTH;
      jp.setLayout(gb);
      c.gridx=0;
      c.gridy=0;
      JButton jb=new JButton("Button1");
      gb.setConstraints(jb,c);
      jp.add(jb);
      con.add(jp, BorderLayout.CENTER);
      setSize(250,250);
      setVisible(true);
      addWindowListener(
           new WindowAdapter(){
               public void windowClosing(WindowEvent e){
                  System.exit(0);
public static void main(String[] args){
      new gridBagLayoutTest();

Answer 1

Hi,
well your question seems not clear, but anyway..i would suggest u make use of the NORTHWEST, NORTH, NORTHEAST, EAST constraints of the GridBagLayout..its the most tedious and difficult layout manager in java
i.e
GridBagLayout gl;
GridBagConstraints gbc;
gl = new GridBagLayout();
gbc = new GridBagConstraints();
yourpanel.setLayout (gl);
gbc.anchor=GridBagConstraints.NORTHWES;
gbc.gridx=1;     //an example of where u want to position the component at northwest.
gbc.gridy = 4;
gl.setConstraints (yourcomponent,gbc);
yourpanel.add (yourcomponent);But note that by default in java..no matter the type of layout manager used...adding of components to containers starts at at the middle..and get pushed up...depending of the number of components u add up.
Another option for u is to set layout = NULL...then u will have to work with Dimesion..to position your components.
i.e
Jlabel label1 = new JLabel("ddd");
panel.setLayout (null);
jLabel.setBounds(new Rectangle(9, 207, 120, 26));
panel.add(jlabel1);I hope this helps.
Regards.
Olumide