Help in incompatible type JTextArea

[sj_420]

I have 2 classes in the same package

Class1 Example

package LongRSATest;

import java.*;
import javax.swing.*;
import LongRSA.RSACryptor;
import LongRSA.RSACryptString;
import Utilities.Panel.LUAboutPanel;
import java.io.*;

import java.math.BigInteger;
import java.security.NoSuchAlgorithmException;
import java.util.Vector;

/**
 *
 * @author Nimisha
 * 
 */


public class Example extends javax.swing.JFrame
{
    //private RSACryptor cryp;
    public RSAFrame frame = null;
    public RSATest parent = null;
    /** Encryptor / decryptor for String objects */
    public RSACryptor cryp = null;
    public RSACryptString crypter = null;
    public String input = null;
    public boolean packFrame = true;
    public String encrypt = null;
    public String decrypt = null;
    public String d,n,e;
    
    public JTextArea SHA11;

    /** Creates new form Example */
    public Example()
    {
            initComponents();
            cryp = new RSACryptor();
            jTextField1.setText("256");
            jTextField2.setText("256");
             d = "cf56895624d88788b57ba37f5fc8b639";
             n = "1240a700d6879477b4e38e6fbf096200b";
             e = "cb12a3f9d969ea9fe5297633bae03229";
             jTextField3.setText(d);
             jTextField4.setText(n);
             jTextField5.setText(e);
       
            crypter = new RSACryptString(cryp);
            
    }

    String getText() {
        throw new UnsupportedOperationException("Not yet implemented");
    }

    void setText(String string) {
        throw new UnsupportedOperationException("Not yet implemented");
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        jTextField2 = new javax.swing.JTextField();
        jLabel3 = new javax.swing.JLabel();
        jLabel4 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();
        jTextField3 = new javax.swing.JTextField();
        jTextField4 = new javax.swing.JTextField();
        jTextField5 = new javax.swing.JTextField();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jLabel6 = new javax.swing.JLabel();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();
        jButton3 = new javax.swing.JButton();
        jButton4 = new javax.swing.JButton();
        jLabel7 = new javax.swing.JLabel();
        jScrollPane2 = new javax.swing.JScrollPane();
        jTextArea2 = new javax.swing.JTextArea();
        jButton5 = new javax.swing.JButton();
        jLabel8 = new javax.swing.JLabel();
        jButton6 = new javax.swing.JButton();
        jButton7 = new javax.swing.JButton();
        jScrollPane4 = new javax.swing.JScrollPane();
        jTextArea4 = new javax.swing.JTextArea();
        jLabel9 = new javax.swing.JLabel();
        jTextField6 = new javax.swing.JTextField();
        jButton8 = new javax.swing.JButton();
        jButton9 = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Main Frame");
        setAlwaysOnTop(true);

        jLabel1.setText("Key Length (Bit)");

        jLabel2.setText("Certainity");

        jTextField1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jTextField1ActionPerformed(evt);
            }
        });

        jLabel3.setText("Public Key");

        jLabel4.setText("Private  Key");

        jLabel5.setText("Base  Key");

        jButton1.setText("New Keys");
        jButton1.setToolTipText("Generate New Keys");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jButton2.setText("Clear Keys");
        jButton2.setToolTipText("Clear all the keys");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });

        jLabel6.setText("Input String");

        jTextArea1.setColumns(20);
        jTextArea1.setRows(5);
        jScrollPane1.setViewportView(jTextArea1);

        jButton3.setText("Encrypt");
        jButton3.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton3ActionPerformed(evt);
            }
        });

        jButton4.setText("Exit");
        jButton4.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton4ActionPerformed(evt);
            }
        });

        jLabel7.setText("Encrypted String");

        jTextArea2.setColumns(20);
        jTextArea2.setRows(5);
        jScrollPane2.setViewportView(jTextArea2);

        jButton5.setText("Decrypt");
        jButton5.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton5ActionPerformed(evt);
            }
        });

        jLabel8.setText("Output String");

        jButton6.setText("Help");
        jButton6.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton6ActionPerformed(evt);
            }
        });

        jButton7.setText("Clear String");
        jButton7.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton7ActionPerformed(evt);
            }
        });

        jTextArea4.setColumns(20);
        jTextArea4.setRows(5);
        jScrollPane4.setViewportView(jTextArea4);

        jLabel9.setText("Hash");

        jTextField6.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jTextField6ActionPerformed(evt);
            }
        });

        jButton8.setText("Signature");
        jButton8.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton8ActionPerformed(evt);
            }
        });

        jButton9.setText("Generate Hash");
        jButton9.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton9ActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                                        .addComponent(jLabel1, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                        .addComponent(jButton1, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                        .addComponent(jLabel5, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                        .addComponent(jLabel6, javax.swing.GroupLayout.Alignment.LEADING))
                                    .addComponent(jLabel7)
                                    .addGroup(layout.createSequentialGroup()
                                        .addComponent(jLabel3, javax.swing.GroupLayout.DEFAULT_SIZE, 102, Short.MAX_VALUE)
                                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)))
                                .addGroup(layout.createSequentialGroup()
                                    .addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 97, javax.swing.GroupLayout.PREFERRED_SIZE)
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)))
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jLabel9, javax.swing.GroupLayout.PREFERRED_SIZE, 57, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)))
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addGap(133, 133, 133)
                                .addComponent(jButton2))
                            .addGroup(layout.createSequentialGroup()
                                .addGap(38, 38, 38)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addGroup(layout.createSequentialGroup()
                                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                        .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 54, javax.swing.GroupLayout.PREFERRED_SIZE)
                                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 74, Short.MAX_VALUE)
                                        .addComponent(jLabel2)
                                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 42, Short.MAX_VALUE)
                                        .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, 76, javax.swing.GroupLayout.PREFERRED_SIZE)
                                        .addGap(353, 353, 353))
                                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                                        .addComponent(jTextField3, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 313, Short.MAX_VALUE)
                                        .addComponent(jTextField5, javax.swing.GroupLayout.Alignment.LEADING)
                                        .addComponent(jTextField4, javax.swing.GroupLayout.Alignment.LEADING))
                                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                                        .addComponent(jTextField6, javax.swing.GroupLayout.Alignment.LEADING)
                                        .addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.LEADING)
                                        .addComponent(jScrollPane2, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 342, Short.MAX_VALUE)
                                        .addComponent(jScrollPane4, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 294, Short.MAX_VALUE)))))
                        .addContainerGap())
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jButton3, javax.swing.GroupLayout.DEFAULT_SIZE, 97, Short.MAX_VALUE)
                        .addGap(133, 133, 133)
                        .addComponent(jButton7)
                        .addGap(467, 467, 467))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel8)
                        .addGap(375, 375, 375))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jButton9)
                        .addContainerGap(681, Short.MAX_VALUE))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jButton8)
                        .addGap(144, 144, 144)
                        .addComponent(jButton5)
                        .addContainerGap(492, Short.MAX_VALUE))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jButton6, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addGap(168, 168, 168)
                        .addComponent(jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(498, 498, 498))))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel2)
                    .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(64, 64, 64)
                        .addComponent(jLabel5)
                        .addGap(18, 18, 18))
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jLabel3)
                            .addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jLabel4)
                            .addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jTextField5, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(10, 10, 10)))
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton1)
                    .addComponent(jButton2))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jLabel6, javax.swing.GroupLayout.PREFERRED_SIZE, 24, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 51, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton3)
                    .addComponent(jButton7))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 39, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel7, javax.swing.GroupLayout.PREFERRED_SIZE, 24, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(18, 18, 18)
                        .addComponent(jButton9)))
                .addGap(10, 10, 10)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jLabel9)
                    .addComponent(jTextField6, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton5)
                    .addComponent(jButton8))
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(25, 25, 25)
                        .addComponent(jLabel8, javax.swing.GroupLayout.PREFERRED_SIZE, 24, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(35, 35, 35))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(18, 18, 18)
                        .addComponent(jScrollPane4, 0, 0, Short.MAX_VALUE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)))
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton4)
                    .addComponent(jButton6))
                .addGap(41, 41, 41))
        );

        pack();
    }// </editor-fold>                        

    private void jTextField1ActionPerformed(java.awt.event.ActionEvent evt) {                                            
        // TODO add your handling code here:
                  
    }                                           

    private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
        System.exit(0);
        setVisible(false);
    }                                        

    private void jButton6ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:

            JDialog dialog = new JDialog();
            LUAboutPanel about = new LUAboutPanel();
	        about.setApplicationName("LongRSA");
            about.setApplicationVersion("2.0.0");
            dialog.setContentPane(about);
            dialog.pack();
            dialog.setVisible(true);

    
    }                                        

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
      
        int keyLength = Integer.parseInt(jTextField1.getText());
        int keyCertainty = Integer.parseInt(jTextField2.getText());
        Vector<BigInteger> keys = cryp.createKey(keyLength, keyCertainty);
        try
        {
            cryp.setKeyN((BigInteger) keys.elementAt(0));
            cryp.setKeyE((BigInteger) keys.elementAt(1));
            cryp.setKeyD((BigInteger) keys.elementAt(2));
            jTextField3.setText(((BigInteger) keys.elementAt(0)).toString(16));
            jTextField4.setText(((BigInteger) keys.elementAt(1)).toString(16));
            jTextField5.setText(((BigInteger) keys.elementAt(2)).toString(16));
        }
        catch (NumberFormatException e)
        {
            jTextField5.setText("Error: " + e.getMessage() + " --> please create again");
           jTextField3.setText("");
            jTextField4.setText("");
        }
             
    }                                        

    private void jButton8ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
        
        setVisible(false);
        new Steganography_Controller(new Steganography_View("Steganography"),new Steganography());
        setVisible(true);
    }                                        

    private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:

        parent.decrypt();
    }                                        

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
// TODO add your handling code here:
   jTextField3.setText("");
   jTextField4.setText("");
   jTextField5.setText("");
}                                        

private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {                                         
// TODO add your handling code here:
     input = jTextArea1.getText();
        encrypt = crypter.Encode(input);
        jTextArea2.setText(encrypt);
}                                        

private void jButton7ActionPerformed(java.awt.event.ActionEvent evt) {                                         
// TODO add your handling code here:
    jTextArea1.setText("");
    
}                                        

private void jButton9ActionPerformed(java.awt.event.ActionEvent evt) {                                         
    // TODO add your handling code here:
BufferedReader userInput = new BufferedReader (new InputStreamReader(System.in));


        //String rawString=encrypt;
       String rawString = jTextArea2.getText();

  JTextArea SHA11 = new JTextArea();
         try
         {
                SHA11.toString();
           //   SHA11=AeSimpleSHA1.SHA1(rawString);
              jTextField6.setText(AeSimpleSHA1.SHA1(rawString));
          //  jTextField6.setText(SHA11);
               
         //  JOptionPane.showMessageDialog(this,SHA11);

         }
         catch (NoSuchAlgorithmException e)
         {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        catch (UnsupportedEncodingException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
       
}                                        

private void jTextField6ActionPerformed(java.awt.event.ActionEvent evt) {                                            
    // TODO add your handling code here:
}                                           

    /**
    * @param args the command line arguments
    */

    public static void main(String args[])
    {
     
        java.awt.EventQueue.invokeLater(new Runnable()
        {
            public void run()
            {
                new Example().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    public static javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JButton jButton4;
    private javax.swing.JButton jButton5;
    private javax.swing.JButton jButton6;
    private javax.swing.JButton jButton7;
    private javax.swing.JButton jButton8;
    public static javax.swing.JButton jButton9;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JLabel jLabel7;
    private javax.swing.JLabel jLabel8;
    private javax.swing.JLabel jLabel9;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JScrollPane jScrollPane4;
    private javax.swing.JTextArea jTextArea1;
    private javax.swing.JTextArea jTextArea2;
    private javax.swing.JTextArea jTextArea4;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField jTextField2;
    private javax.swing.JTextField jTextField3;
    private javax.swing.JTextField jTextField4;
    private javax.swing.JTextField jTextField5;
    public javax.swing.JTextField jTextField6;
    // End of variables declaration                   

}

Class2 Steganography_Controller

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package LongRSATest;

/**
 *
 * @author Sanjog
 */


/*
 *Import List
 */
import java.io.File;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;

import javax.imageio.ImageIO;


public class Steganography_Controller extends javax.swing.JFrame
{
	//Program Variables
	private Steganography_View	view;
	private Steganography               model;
	
	//Panel Displays
	private JPanel		decode_panel;
	private JPanel		encode_panel;
	//Panel Variables
	public JTextArea 	input;
	private JButton		encodeButton,decodeButton;
	private JLabel		image_input;
	//Menu Variables
	private JMenuItem 	encode;
	private JMenuItem 	decode;
	private JMenuItem 	exit;
	
	//action event classes
	private Encode			enc;
	private Decode			dec;
	private EncodeButton	encButton;
	private DecodeButton	decButton;
	
	//decode variable
	private String			stat_path = "";
	private String			stat_name = "";
	public Example SHA11;
        public Example rawString;
        
	/*
	 *Constructor to initialize view, model and environment variables
	 *@param aView  A GUI class, to be saved as view
	 *@param aModel A model class, to be saved as model
	 */
         
	public Steganography_Controller(Steganography_View aView, Steganography aModel) 
	{
		//program variables
		view  = aView;
		model = aModel;
		
		//assign View Variables
		//2 views
		encode_panel	= view.getTextPanel();
		decode_panel	= view.getImagePanel();
		//2 data options
           
               
                 input			= view.getText();
                                                          
		image_input		= view.getImageInput();
		//2 buttons
		encodeButton	= view.getEButton();
		decodeButton	= view.getDButton();
		//menu
		encode			= view.getEncode();
		decode			= view.getDecode();
		exit			= view.getExit();
		
		//assign action events
		enc = new Encode();
		encode.addActionListener(enc);
		dec = new Decode();
		decode.addActionListener(dec);
		exit.addActionListener(new Exit());
		encButton = new EncodeButton();
		encodeButton.addActionListener(encButton);
		decButton = new DecodeButton();
		decodeButton.addActionListener(decButton);
		
		//encode view as default
		encode_view();
	}

    private JTextArea Example(Example SHA11) {
        throw new UnsupportedOperationException("Not yet implemented");
    }
	
	/*
	 *Updates the single panel to display the Encode View.
	 */
	private void encode_view()
	{
		update();
		view.setContentPane(encode_panel);
		view.setVisible(true);
	}
	
	/*
	 *Updates the single panel to display the Decode View.
	 */
	private void decode_view()
	{
		update();
		view.setContentPane(decode_panel);
		view.setVisible(true);
	}
	
	/*
	 *Encode Class - handles the Encode menu item
	 */
	private class Encode implements ActionListener
	{
		/*
		 *handles the click event
		 *@param e The ActionEvent Object
		 */
		public void actionPerformed(ActionEvent e)
		{
			encode_view(); //show the encode view
		}
	}
	
	/*
	 *Decode Class - handles the Decode menu item
	 */
	private class Decode implements ActionListener
	{
		/*
		 *handles the click event
		 *@param e The ActionEvent Object
		 */
		public void actionPerformed(ActionEvent e)
		{
			decode_view(); //show the decode view
			
			//start path of displayed File Chooser
			JFileChooser chooser = new JFileChooser("./");
			chooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
			chooser.setFileFilter(new Image_Filter());
			int returnVal = chooser.showOpenDialog(view);
			if (returnVal == JFileChooser.APPROVE_OPTION){
				File directory = chooser.getSelectedFile();
				try{
					String image = directory.getPath();
					stat_name = directory.getName();
					stat_path = directory.getPath();
					stat_path = stat_path.substring(0,stat_path.length()-stat_name.length()-1);
					stat_name = stat_name.substring(0, stat_name.length()-4);
					image_input.setIcon(new ImageIcon(ImageIO.read(new File(image))));
				}
				catch(Exception except) {
				//msg if opening fails
				JOptionPane.showMessageDialog(view, "The File cannot be opened!","Error!", JOptionPane.INFORMATION_MESSAGE);
				}
			}
		}
	}
	
	/*
	 *Exit Class - handles the Exit menu item
	 */
	private class Exit implements ActionListener
	{
		/*
		 *handles the click event
		 *@param e The ActionEvent Object
		 */
		public void actionPerformed(ActionEvent e)
		{
			System.exit(0); //exit the program
		}
	}
	
	/*
	 *Encode Button Class - handles the Encode Button item
	 */
	private class EncodeButton implements ActionListener
	{
		/*
		 *handles the click event
		 *@param e The ActionEvent Object
		 */
		public void actionPerformed(ActionEvent e)
		{
			//start path of displayed File Chooser
			JFileChooser chooser = new JFileChooser("./");
			chooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
			chooser.setFileFilter(new Image_Filter());
			int returnVal = chooser.showOpenDialog(view);
			if (returnVal == JFileChooser.APPROVE_OPTION){
				File directory = chooser.getSelectedFile();
				try{
					String text = input.getText();
					String ext  = Image_Filter.getExtension(directory);
					String name = directory.getName();
					String path = directory.getPath();
					path = path.substring(0,path.length()-name.length()-1);
					name = name.substring(0, name.length()-4);
					
					String stegan = JOptionPane.showInputDialog(view,"Enter output file name:", "File name",JOptionPane.PLAIN_MESSAGE);
					
					if(model.encode(path,name,ext,stegan,text))
					{
						JOptionPane.showMessageDialog(view, "The Image was encoded Successfully!", "Success!", JOptionPane.INFORMATION_MESSAGE);
					}
					else
					{
						JOptionPane.showMessageDialog(view, "The Image could not be encoded!", "Error!", JOptionPane.INFORMATION_MESSAGE);
					}
					//display the new image
					decode_view();
					image_input.setIcon(new ImageIcon(ImageIO.read(new File(path + "/" + stegan + ".png"))));
				}
				catch(Exception except) {
				//msg if opening fails
				JOptionPane.showMessageDialog(view, "The File cannot be opened!", "Error!", JOptionPane.INFORMATION_MESSAGE);
				}
			}
		}
		
	}
	
	/*
	 *Decode Button Class - handles the Decode Button item
	 */
	private class DecodeButton implements ActionListener
	{
		/*
		 *handles the click event
		 *@param e The ActionEvent Object
		 */
		public void actionPerformed(ActionEvent e)
		{
			String message = model.decode(stat_path, stat_name);
			System.out.println(stat_path + ", " + stat_name);
			if(message != "")
			{
				encode_view();
				JOptionPane.showMessageDialog(view, "The Image was decoded Successfully!","Success!", JOptionPane.INFORMATION_MESSAGE);				input.setText(message);
			}
			else
			{
				JOptionPane.showMessageDialog(view, "The Image could not be decoded!","Error!", JOptionPane.INFORMATION_MESSAGE);
			}
		}
	}
	
	/*
	 *Updates the variables to an initial state
	 */
	public void update()
	{
		input.setText("");			//clear textarea
		image_input.setIcon(null);	//clear image
		stat_path = "";				//clear path
		stat_name = "";				//clear name
	}
	
	/*
	 *Main Method for testing
	 */
	public static void main(String args[])
	{
		new Steganography_Controller(new Steganography_View("Steganography"),new Steganography());
	}
          private javax.swing.JTextArea jTextArea1;
}

Problem is that I want to use SHA11 variable declared in Example class in Steganography_Controller but it shows an error incompatible type

[Eranga]

Please use code tags when you posting again here in the forum. Unformated codes are really hard to read. :)

[Eranga]

Seems you are using NetBeans for coding. If you cannot solve the problem by looking at the error message look at the suggestion, NetBeans may gives the suggestion for you.

[sj_420]

thanks for your reponse ,yes i am using netbeans and that error is shown there,

[Eranga]

Can you send here on which line you got that error?