Stack JPanel cards from top to bottom inside a JPanel

I need to dynamically stack panels inside another one, but instead filling it from center, I need to add cards ( panels ) and they going to top of the container.

Much more like this:
http://www.java2s.com/Tutorials/Java/Swing_How_to/Layout/Force_components_to_be_stacked_from_top_not_vertically_centered_with_GridBagLayout.htm

and this:
https://stackoverflow.com/questions/49330716/gridbaglayout-vertically-positioning-components

But I can't addapt the code to allow dynamically inserts of new JPanels.

This is what I have so far:

    private JLabel addVesselPane(String text) {
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.gridx = 0;
        gbc.gridy = GridBagConstraints.RELATIVE;
        gbc.weightx = 1.0;
        gbc.anchor = GridBagConstraints.FIRST_LINE_START;
        gbc.fill = GridBagConstraints.HORIZONTAL;      	
    	
    	JLabel vesselLabel = new JLabel( text, JLabel.LEFT );
    	vesselLabel.setFont(new java.awt.Font("Arial", Font.PLAIN, 9));
    	vesselLabel.setOpaque(true);
    	vesselLabel.setBackground(Color.WHITE);   
    	
    	JPanel jp = new JPanel( new BorderLayout() );
    	jp.setBorder( BorderFactory.createEtchedBorder() );
    	jp.setPreferredSize(new Dimension(190,30));
    	jp.add( vesselLabel );
    	
    	westContentPanel.add(jp, gbc);    	
        this.frame.revalidate();	
        return vesselLabel;
	}

where:

GridBagLayout grid = new GridBagLayout();
westContentPanel = new JPanel( grid );
JScrollPane westScrollPanel = new JScrollPane(westContentPanel);

but when I ...

for( int x=0; x < 5; x++ ) {
  	addVesselPane("Btn " + x);
}

The result is:

When I expect all panels being at the top of the blue panel. I must say when I have more panels than the blue panel can hold, the scroller is activated and I can scroll down. I must be allowed to delete panels too.

Solved:

	public void addScrollFrame( JPanel toWho, JPanel buttonPanel ) {
JButton btnAddType = new JButton("Add");
btnAddType.addActionListener( e -> {
JLabel card = addNewCard("This is a new Card!");
// Store it for future reference (Ex. change label)
});
buttonPanel.add(btnAddType);
JButton btnDeleteField = new JButton("Del");
buttonPanel.add(btnDeleteField);
JButton btnSaveRule = new JButton("Save");
buttonPanel.add(btnSaveRule);
this.westContentPanel = new JPanel();
westContentPanel.setLayout( new BoxLayout( westContentPanel, BoxLayout.Y_AXIS)  );
JScrollPane scroll = new JScrollPane(westContentPanel);
scroll.setHorizontalScrollBarPolicy( JScrollPane.HORIZONTAL_SCROLLBAR_NEVER );
scroll.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);
scroll.setViewportView(westContentPanel); 
toWho.add(scroll, BorderLayout.CENTER);
}
private JLabel addNewCard(String text) {
JLabel vesselLabel = new JLabel( text, JLabel.LEFT );
vesselLabel.setFont(new Font("Arial", Font.BOLD, 10));
vesselLabel.setOpaque(true);
vesselLabel.setBackground(Color.WHITE);
vesselLabel.setCursor( new Cursor( Cursor.HAND_CURSOR ) );
vesselLabel.setBorder( BorderFactory.createEmptyBorder(0, 3, 0, 0) );
vesselLabel.setPreferredSize( new Dimension(200,35) );
JPanel jp = new JPanel( new BorderLayout() );
jp.setMaximumSize( new Dimension(200,35) );
jp.setBorder( BorderFactory.createCompoundBorder(
BorderFactory.createEmptyBorder(3, 0, 0, 0), BorderFactory.createLineBorder( Color.BLACK )
));
jp.add( vesselLabel );
this.westContentPanel.add(jp);    	
this.frame.revalidate();	
return vesselLabel;
}	

toWho is a Panel to use as container and buttonPanel a panel to use as button bar.

		JPanel westButtonsPanel = new JPanel();
westButtonsPanel.setPreferredSize(new Dimension(220,40));
westButtonsPanel.setBorder( BorderFactory.createEtchedBorder() );
JPanel west = new JPanel(  );
west.setLayout( new BorderLayout(0, 0) );
west.setBorder( BorderFactory.createEtchedBorder() );
west.add(westButtonsPanel,BorderLayout.NORTH);
addScrollFrame(west, westButtonsPanel);

With scroll !! Just what I need !!

Note: You may want westContentPanel to be created local at addScrollFrame scope and passed as parameter to addNewCard(). You choose.