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

public class MyJFrame1 extends JFrame implements ActionListener {    
  public static void main(String args[]) {   // to run: java MyJFrame1
    JFrame frame = new MyJFrame1();
    frame.setVisible(true);
    frame.show();   // deprecated
  }
  private JButton myButton;
  public MyJFrame1() {
    setSize(400,350);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    myButton = new JButton("Next Frame");
    myButton.setBounds(100,100,100,25);
    add(myButton);
    myButton.addActionListener(this); 
  }
  public void actionPerformed(ActionEvent e) {
    Object src = e.getSource();
    if (src == myButton) {
      setVisible(false);
      MyJFrame2 frame2 = new MyJFrame2("HELLO FROM MYJFRAME1");
      frame2.show();
    }
  }
}