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

JButton is a class in the Java Swing package that provides a button component. You can create a JButton and add it to a JFrame or other container to allow the user to click it and trigger an action.

Here's an example of creating a simple JButton:

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

public class MyButton extends JFrame {
  
  public MyButton() {
    super("Button Example");
    JButton button = new JButton("Click me!");
    add(button);
    pack();
    setVisible(true);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }

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

In this example, we create a new JFrame and add a JButton to it with the label "Click me!". We then call the pack() method to resize the JFrame to fit its contents, make it visible with setVisible(true), and set the default close operation to exit the application when the JFrame is closed.

When you run this program, it will display a window with a button labeled "Click me!". When the user clicks the button, nothing will happen because we haven't defined an action to take yet.

Here's an example of defining an action to take when the button is clicked:

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

public class MyButton extends JFrame {
  
  public MyButton() {
    super("Button Example");
    JButton button = new JButton("Click me!");
    button.addActionListener(e -> {
      JOptionPane.showMessageDialog(null, "Button clicked!");
    });
    add(button);
    pack();
    setVisible(true);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }

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

In this example, we add an ActionListener to the button using a lambda expression. The ActionListener defines what should happen when the button is clicked. In this case, we show a simple message dialog using JOptionPane.showMessageDialog() to display the text "Button clicked!".

Now, when you run the program and click the button, it will display a message dialog with the text "Button clicked!".

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