JTextField在调用的方法中不可见

Question

I'm trying to populate a Panel with a textfield and a label, the label is being reflecting as expected, however the textfield is not showing up. Below is the code that is being used:

    package qmutility;

    import java.awt.GridLayout;     
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JPanel;
    import javax.swing.JScrollPane;
    import javax.swing.JTabbedPane;
    import javax.swing.JTextArea;
    import javax.swing.JTextField;

    public class panetest1 
    {

        public static void main(String[] args) 
        {
            createSubframe();

        }

        public static void createSubframe()
        {
            final JFrame subframe = new JFrame("Object Choice");
            subframe.setSize(1000, 500);        
            subframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            subframe.getContentPane().setLayout(new GridLayout(1, 1));
            JTextArea out = new JTextArea();
            out.setEditable (false);
            JScrollPane jp = new  JScrollPane(out);
            jp.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
            jp.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);

            JTabbedPane tabbedPane = new JTabbedPane(JTabbedPane.TOP);

            JPanel queue = new JPanel();
            JLabel lblqname = new JLabel("Please enter the queue name");
            JTextField txtqname = new JTextField(20);

            queue.add(lblqname, txtqname);

            JPanel chl = new JPanel();

            tabbedPane.addTab("Queues", queue);
            tabbedPane.addTab("Channels", chl);     
            subframe.getContentPane().add(tabbedPane);
            subframe.getContentPane().add(jp);
            tabbedPane.setVisible(true);
            subframe.setVisible(true);      
        }

    }

Edit: Attached the screengrab result

Answer 1

Try changing the Layout of your panel.

Like, queue.setLayout(new FlowLayout());

or Add components to panel one by one,

queue.add(lblqname);
queue.add(txtqname);

Answer 2

The method Container.add(Component comp,Object constraints) adds a given Component with given constraints , it is not meant to add two Component at once.

Replace :

queue.add(lblqname, txtqname);

With

queue.add(lblqname);
queue.add(txtqname);