I can give you a basic tutorial and examples for using JFrame in Java.

JFrame is a class in the Java Swing package that provides a window for your graphical user interface. You can create a JFrame and add other Swing components such as JButtons, JLabels, JTextFields, and more to it.

Here's an example of creating a simple JFrame:

import javax.swing.JFrame;

public class MyFrame extends JFrame {

  public MyFrame() {
    super("My First JFrame");
    setSize(300, 200);
    setLocationRelativeTo(null);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setVisible(true);
  }

  public static void main(String[] args) {
    new MyFrame();
  }
}

In this example, we create a new JFrame with the title "My First JFrame". We then set the size of the JFrame to 300x200 pixels using setSize(), center the JFrame on the screen using setLocationRelativeTo(), set the default close operation to exit the application when the JFrame is closed, and make the JFrame visible with setVisible(true).

When you run this program, it will display a window with the title "My First JFrame" that is 300x200 pixels in size.

Here's an example of adding a JLabel to the JFrame:

import javax.swing.JFrame;
import javax.swing.JLabel;

public class MyFrame extends JFrame {

  public MyFrame() {
    super("My JFrame with a Label");
    setSize(300, 200);
    setLocationRelativeTo(null);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JLabel label = new JLabel("Hello, World!");
    add(label);
    setVisible(true);
  }

  public static void main(String[] args) {
    new MyFrame();
  }
}

In this example, we create a new JLabel with the text "Hello, World!", and add it to the JFrame using add(). When you run this program, it will display a window with the label "Hello, World!" inside.

Here's an example of adding a JButton to the JFrame:

import javax.swing.JButton;
import javax.swing.JFrame;

public class MyFrame extends JFrame {

  public MyFrame() {
    super("My JFrame with a Button");
    setSize(300, 200);
    setLocationRelativeTo(null);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JButton button = new JButton("Click me!");
    add(button);
    setVisible(true);
  }

  public static void main(String[] args) {
    new MyFrame();
  }
}

In this example, we create a new JButton with the text "Click me!", and add it to the JFrame using add(). When you run this program, it will display a window with the button "Click me!" inside.

I hope this helps you get started with using JFrame in Java!