A customized JFrame window with three components:

   import java.awt.*;
   import java.awt.event.*;
   import javax.swing.*;
   
   public class SampleWin6
   {
      public static void main(String [] args)
      {
         MyFrame frame = new MyFrame("Alan Window");
         frame.setSize(400, 300);
         frame.setLocation(100, 75);
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame.setVisible(true);
      }
   }
   
   class MyFrame extends JFrame
   {
      JButton btnSubmit;
      JButton btnClear;
      JTextField text;

      public MyFrame(String s)
      {
         super(s);
         setLayout(new FlowLayout());
   
         btnSubmit = new JButton("Submit");
         btnClear = new JButton("Clear");
         text  = new JTextField("100 Main Street");
         
         add(btnSubmit);
         add(btnClear);
         add(text);
      }
   }