Java GridBagLayout

//Usually you will require both swing and awt packages

// even if you are working with just swings.

import javax.swing.*;

import java.awt.*;

class gui {

    public static void main(String args[]) {

        //Creating the Frame

        JFrame frame = new JFrame("Chat Frame");

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        frame.setSize(400, 400);

        //Creating the MenuBar and adding components

        JMenuBar mb = new JMenuBar();

        JMenu m1 = new JMenu("FILE");

        JMenu m2 = new JMenu("Help");

        mb.add(m1);

        mb.add(m2);

        JMenuItem m11 = new JMenuItem("Open");

        JMenuItem m22 = new JMenuItem("Save as");

        m1.add(m11);

        m1.add(m22);

        //Creating the panel at bottom and adding components

        JPanel panel = new JPanel(); // the panel is not visible in output

        JLabel label = new JLabel("Enter Text");

        JTextField tf = new JTextField(10); // accepts upto 10 characters

        JButton send = new JButton("Send");

        JButton reset = new JButton("Reset");

        panel.add(label); // Components Added using Flow Layout

        panel.add(tf);

        panel.add(send);

        panel.add(reset);

        // Text Area at the Center

        JTextArea ta = new JTextArea();

        //Adding Components to the frame.

        frame.getContentPane().add(BorderLayout.SOUTH, panel);

        frame.getContentPane().add(BorderLayout.NORTH, mb);

        frame.getContentPane().add(BorderLayout.CENTER, ta);

        frame.setVisible(true);

    }

}