MyFrame.java
import javax.swing.JFrame;

 public class MyFrame {
 public static void main(String[] args) {
 JFrame frame = new JFrame("MyFrame"); // Create a frame
 frame.setSize(400, 300); // Set the frame size
// Center a frame
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 frame.setVisible(true); // Display the frame
 }
 }

MyFrame1.java
import javax.swing.*;

 public class MyFrameWithComponents {
 public static void main(String[] args) {
 JFrame frame = new JFrame("MyFrameWithComponents");

 // Add a button to the frame
JButton jbtOK = new JButton("OK");
frame.add(jbtOK);
 frame.setSize(400, 300);
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 frame.setLocationRelativeTo(null); // Center the frame
 frame.setVisible(true);
 }
 }

Showlayout.java

import javax.swing.JLabel;
 import javax.swing.JTextField;
 import javax.swing.JFrame;
 import java.awt.FlowLayout;

 public class ShowFlowLayout {
 public ShowFlowLayout() {
 // Set FlowLayout, aligned left with horizontal gap 10
 // and vertical gap 20 between components
 setLayout( );

 // Add labels and text fields to the frame
 add(new JLabel("First Name"));
 add(new JTextField(8));
 add(new JLabel("MI"));
 add(new JTextField(1));
 add(new JLabel("Last Name"));
 add(new JTextField(8));
 }


 public static void main(String[] args) {
 ShowFlowLayout frame = new ShowFlowLayout();
 frame.setTitle("ShowFlowLayout");
 frame.setSize(200, 200);
 frame.setLocationRelativeTo(null); // Center the frame
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 frame.setVisible(true);
 }
}


ShowGridLayout.java
import javax.swing.JLabel;
 import javax.swing.JTextField;
 import javax.swing.JFrame;
 import java.awt.GridLayout;

public class ShowGridLayout extends JFrame {
public ShowGridLayout() {
 // Set GridLayout, 3 rows, 2 columns, and gaps 5 between
 // components horizontally and vertically
 setLayout(new GridLayout(3, 2, 5, 5));

 // Add labels and text fields to the frame
 add(new JLabel("First Name"));
 add(new JTextField(8));
 add(new JLabel("MI"));
 add(new JTextField(1));
 add(new JLabel("Last Name"));
 add(new JTextField(8));
 }

 public static void main(String[] args) {
 ShowGridLayout frame = new ShowGridLayout();
 frame.setTitle("ShowGridLayout");
 frame.setSize(200, 125);
 frame.setLocationRelativeTo(null); // Center the frame
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 frame.setVisible(true);
 }
 }

TestPanels.java
import java.awt.*;
 import javax.swing.*;

 public class TestPanels extends JFrame {
 public TestPanels() {
 // Create panel p1 for the buttons and set GridLayout

JPanel p1 = new JPanel();
p1.setLayout(new GridLayout(4, 3));

 // Add buttons to the panel
 for (int i = 1; i <= 9; i++) {
 p1.add(new JButton("" + i));
 }

 p1.add(new JButton("" + 0));
 p1.add(new JButton("Start"));
 p1.add(new JButton("Stop"));

 // Create panel p2 to hold a text field and p1
JPanel p2 = new JPanel(new BorderLayout());
p2.add (new JTextField("Time to be displayed here"),
 BorderLayout.NORTH);
p2.add(p1, BorderLayout.CENTER);

 // Add contents to the frame
 add(p2, BorderLayout.EAST);
 add(new JButton("Food to be placed here"),
 BorderLayout.CENTER);
 }

/** Main method */
 public static void main(String[] args) {
 TestPanels frame = new TestPanels();
 frame.setTitle("The Front View of a Microwave Oven");
 frame.setSize(400, 250);
 frame.setLocationRelativeTo(null); // Center the frame
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 frame.setVisible(true);
 }
 }