try to do like the following :

import javax.swing.*;

import java.awt.event.*;

class Frame1 extends JFrame
{
    private JButton btn1;   
    private JTextField tf1;
    public Frame1()
    {
        setLayout(null);
        setSize(500,500);
        tf1=new JTextField();
        tf1.setBounds(100,100,100,30);
        btn1=new JButton("click for second frame");
        btn1.setBounds(100,250,200,30);
        btn1.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                String text=tf1.getText();
                new Frame2(text);
            }
        });
        add(tf1);
        add(btn1);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible(true);
    }
    public Frame1(String text1)
    {
        setLayout(null);
        setSize(500,500);
        tf1=new JTextField();
        tf1.setText(text1);
        tf1.setBounds(100,100,100,30);
        btn1=new JButton("click for second frame");
        btn1.setBounds(100,250,200,30);
        btn1.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                String text=tf1.getText();
                new Frame2(text);
            }
        });
        add(tf1);
        add(btn1);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible(true);
    }   

    public JTextField getTextField1()
    {
        return tf1;
    }   
}

Continue...

import javax.swing.*; import java.awt.*; import java.awt.event.*; class Frame2 extends JFrame { private JButton btn2; private JTextField tf2; private String secondtext;

    private Frame1 frame1;

    public Frame2()
    {

    }
    public Frame2(String firsttext)
    {
        setLayout(null);
        setSize(500,500);
        tf2=new JTextField();
        tf2.setText(firsttext);
        //secondtext=tf2.getText();
        tf2.setBounds(100,100,100,30);
        btn2=new JButton("click for first frame");
        btn2.setBounds(100,250,200,30);
        //btn2.addActionListener(new MyActionListener());
        btn2.addActionListener(new ActionListener()
        {
          public void actionPerformed(ActionEvent ae)
          {
              secondtext=tf2.getText();           
              frame1 = new Frame1(secondtext);
          }
        });
        add(tf2);
        add(btn2);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible(true);
    }
    public JTextField getTextField2()
    {
        return tf2;
    }
    public String getSecondText()
    {
        return secondtext;
    }
}

Continue...

class MyFrame { public static void main(String args[]) { new Frame1(); } }

Thanks.