import javax.swing.SpringLayout;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JTextField;import java.awt.Container;public class SpringDemo2 {    /**     * Create the GUI and show it.  For thread safety,     * this method should be invoked from the     * event-dispatching thread.     */    private static void createAndShowGUI() {        //Make sure we have nice window decorations.        JFrame.setDefaultLookAndFeelDecorated(true);        //Create and set up the window.        JFrame frame = new JFrame("SpringDemo2");        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        //Set up the content pane.        Container contentPane = frame.getContentPane();        SpringLayout layout = new SpringLayout();        contentPane.setLayout(layout);        //Create and add the components.        JLabel label = new JLabel("Label: ");        JTextField textField = new JTextField("Text field", 15);        contentPane.add(label);        contentPane.add(textField);        //Adjust constraints for the label so it's at (5,5).        layout.putConstraint(SpringLayout.WEST, label,                             5,                             SpringLayout.WEST, contentPane);        layout.putConstraint(SpringLayout.NORTH, label,                             5,                             SpringLayout.NORTH, contentPane);        //Adjust constraints for the text field so it's at        //(<label's right edge> + 5, 5).        layout.putConstraint(SpringLayout.WEST, textField,                             5,                             SpringLayout.EAST, label);        layout.putConstraint(SpringLayout.NORTH, textField,                             5,                             SpringLayout.NORTH, contentPane);        //Display the window.        frame.pack();        frame.setVisible(true);    }    public static void main(String[] args) {        //Schedule a job for the event-dispatching thread:        //creating and showing this application's GUI.        javax.swing.SwingUtilities.invokeLater(new Runnable() {            public void run() {                createAndShowGUI();            }        });    }}