Disini SITTA: Project Stream IO

pertama membuat file dengan nama jenisFile.java
isinya :

package project_io;
import java.io.*;
import javax.swing.filechooser.FileFilter;

class jenisFile extends FileFilter {
private String[] s;
jenisFile(String[] sArg) {
s = sArg;
}
// Tentukan file apa yang akan ditampilkan
public boolean accept(File fArg) {
if (fArg.isDirectory())
return true;
for (int i = 0; i < s.length; ++i)
if (fArg.getName().toLowerCase().indexOf(s[i].toLowerCase()) > 0)
return true;
// selain kedua hal di atas, anggap false
return false;
}
public String getDescription() {
String tmp = "";
for (int i = 0; i < s.length; ++i)
tmp += "*" + s[i] + " ";
return tmp;
}
}
// Jika Extension dari file sesuai syarat, tampilkan

kemudian membuat NEW - JFrame Form kalau aku nama filenya ProjectIO.java

tampilannya seperti ini

setelah itu mulai mengcoding :D

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.Timer;
import javax.swing.Icon;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.filechooser.*;
import javax.swing.*;
import java.io.*;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import javax.swing.filechooser.FileFilter;

public class ProjectIO extends javax.swing.JFrame {
JFileChooser fc;
File file;
boolean Nfile;
final String[] EXT = { ".csv" };
final String[] EXT2 = { ".txt", ".java" };
private String text;

public ProjectIO() {
initComponents();
editor.setVisible(false);
editor2.setFocusable(false);
editor2.setEditable(false);
this.setTitle("Untitled - NOTES");
fc = new JFileChooser();
fc.addChoosableFileFilter(new jenisFile(EXT));
fc.addChoosableFileFilter(new jenisFile(EXT2));
fc.setAcceptAllFileFilterUsed(false);
Nfile = true;
}

@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {

jPanel1 = new javax.swing.JPanel();
jComboBox1 = new javax.swing.JComboBox();
jPanel3 = new javax.swing.JPanel();
btnNew = new javax.swing.JButton();
btnOpen = new javax.swing.JButton();
btnSave = new javax.swing.JButton();
btnSaveAs = new javax.swing.JButton();
jLabel1 = new javax.swing.JLabel();
txtnamafield = new javax.swing.JTextField();
jPanel4 = new javax.swing.JPanel();
txtPass = new javax.swing.JTextField();
btnClear = new javax.swing.JButton();
jScrollPane1 = new javax.swing.JScrollPane();
editor = new javax.swing.JEditorPane();
jPanel2 = new javax.swing.JPanel();
jPanel5 = new javax.swing.JPanel();
txtCPass = new javax.swing.JTextField();
btnDes = new javax.swing.JButton();
jPanel8 = new javax.swing.JPanel();
btnCrypt = new javax.swing.JButton();
btnMD5 = new javax.swing.JButton();
btnRC = new javax.swing.JButton();
btnCC = new javax.swing.JButton();
spnGeser = new javax.swing.JSpinner();
btnSave2 = new javax.swing.JButton();
jScrollPane2 = new javax.swing.JScrollPane();
editor2 = new javax.swing.JEditorPane();
btnExit = new javax.swing.JButton();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 204), 2), "First Text", javax.swing.border.TitledBorder.CENTER, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Bleeding Cowboys", 0, 14), new java.awt.Color(0, 0, 204))); // NOI18N
jPanel1.setForeground(new java.awt.Color(255, 153, 204));

jComboBox1.setFont(new java.awt.Font("Book Antiqua", 0, 12));
jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Menu", "New", "Open", "Save", "Save As" }));
jComboBox1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jComboBox1ActionPerformed(evt);
}
});

jPanel3.setBorder(javax.swing.BorderFactory.createTitledBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 204)), "Menu", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Bleeding Cowboys", 0, 14), new java.awt.Color(0, 0, 204))); // NOI18N

btnNew.setFont(new java.awt.Font("Book Antiqua", 0, 12));
btnNew.setText("New");
btnNew.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnNewActionPerformed(evt);
}
});

btnOpen.setFont(new java.awt.Font("Book Antiqua", 0, 12));
btnOpen.setText("Open");
btnOpen.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnOpenActionPerformed(evt);
}
});

btnSave.setFont(new java.awt.Font("Book Antiqua", 0, 12));
btnSave.setText("Save");
btnSave.setEnabled(false);
btnSave.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnSaveActionPerformed(evt);
}
});

btnSaveAs.setFont(new java.awt.Font("Book Antiqua", 0, 12));
btnSaveAs.setText("Save As");
btnSaveAs.setEnabled(false);
btnSaveAs.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnSaveAsActionPerformed(evt);
}
});

javax.swing.GroupLayout jPanel3Layout = new javax.swing.GroupLayout(jPanel3);
jPanel3.setLayout(jPanel3Layout);
jPanel3Layout.setHorizontalGroup(
jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel3Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(btnSave, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(btnNew, javax.swing.GroupLayout.DEFAULT_SIZE, 73, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(btnSaveAs, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(btnOpen, javax.swing.GroupLayout.DEFAULT_SIZE, 75, Short.MAX_VALUE))
.addContainerGap())
);
jPanel3Layout.setVerticalGroup(
jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel3Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(btnNew)
.addComponent(btnOpen))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(btnSave)
.addComponent(btnSaveAs))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);

jLabel1.setFont(new java.awt.Font("Book Antiqua", 0, 12));
jLabel1.setText("Nama File");

jPanel4.setBorder(javax.swing.BorderFactory.createTitledBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 204)), "Password", javax.swing.border.TitledBorder.CENTER, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Bleeding Cowboys", 0, 14), new java.awt.Color(0, 0, 204))); // NOI18N

javax.swing.GroupLayout jPanel4Layout = new javax.swing.GroupLayout(jPanel4);
jPanel4.setLayout(jPanel4Layout);
jPanel4Layout.setHorizontalGroup(
jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel4Layout.createSequentialGroup()
.addContainerGap()
.addComponent(txtPass, javax.swing.GroupLayout.DEFAULT_SIZE, 197, Short.MAX_VALUE)
.addContainerGap())
);
jPanel4Layout.setVerticalGroup(
jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel4Layout.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(txtPass, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
);

btnClear.setFont(new java.awt.Font("Book Antiqua", 0, 12)); // NOI18N
btnClear.setText("Clear Text");
btnClear.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnClearActionPerformed(evt);
}
});

editor.setEnabled(false);
jScrollPane1.setViewportView(editor);

javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(26, 26, 26)
.addComponent(jPanel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(32, 32, 32)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(txtnamafield, javax.swing.GroupLayout.DEFAULT_SIZE, 127, Short.MAX_VALUE)
.addComponent(jLabel1)))
.addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 442, Short.MAX_VALUE))
.addContainerGap())
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addComponent(btnClear)
.addGap(179, 179, 179)))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addComponent(jPanel4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(108, 108, 108))))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(20, 20, 20)
.addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(20, 20, 20)
.addComponent(jLabel1)
.addGap(9, 9, 9)
.addComponent(txtnamafield, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGap(18, 18, 18)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 165, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(btnClear)
.addGap(18, 18, 18)
.addComponent(jPanel4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(31, Short.MAX_VALUE))
);

jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 204), 2), "Enkripsi Text", javax.swing.border.TitledBorder.CENTER, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Bleeding Cowboys", 0, 14), new java.awt.Color(0, 0, 204))); // NOI18N
jPanel2.setForeground(new java.awt.Color(255, 153, 204));

jPanel5.setBorder(javax.swing.BorderFactory.createTitledBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 204)), "Password", javax.swing.border.TitledBorder.CENTER, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Bleeding Cowboys", 0, 14), new java.awt.Color(0, 0, 204))); // NOI18N

javax.swing.GroupLayout jPanel5Layout = new javax.swing.GroupLayout(jPanel5);
jPanel5.setLayout(jPanel5Layout);
jPanel5Layout.setHorizontalGroup(
jPanel5Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel5Layout.createSequentialGroup()
.addContainerGap()
.addComponent(txtCPass, javax.swing.GroupLayout.DEFAULT_SIZE, 197, Short.MAX_VALUE)
.addContainerGap())
);
jPanel5Layout.setVerticalGroup(
jPanel5Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel5Layout.createSequentialGroup()
.addContainerGap()
.addComponent(txtCPass, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);

btnDes.setFont(new java.awt.Font("Book Antiqua", 0, 12)); // NOI18N
btnDes.setText("Description");
btnDes.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnDesActionPerformed(evt);
}
});

jPanel8.setBorder(javax.swing.BorderFactory.createTitledBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 204)), "Enkripsi", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Bleeding Cowboys", 0, 14), new java.awt.Color(0, 0, 255))); // NOI18N

btnCrypt.setFont(new java.awt.Font("Book Antiqua", 0, 12));
btnCrypt.setText("Cryptography");
btnCrypt.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnCryptActionPerformed(evt);
}
});

btnMD5.setFont(new java.awt.Font("Book Antiqua", 0, 12));
btnMD5.setText("MD5");
btnMD5.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnMD5ActionPerformed(evt);
}
});

btnRC.setFont(new java.awt.Font("Book Antiqua", 0, 12));
btnRC.setText("Random Char");
btnRC.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnRCActionPerformed(evt);
}
});

btnCC.setFont(new java.awt.Font("Book Antiqua", 0, 12));
btnCC.setText("Caesar Chiper");
btnCC.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnCCActionPerformed(evt);
}
});

javax.swing.GroupLayout jPanel8Layout = new javax.swing.GroupLayout(jPanel8);
jPanel8.setLayout(jPanel8Layout);
jPanel8Layout.setHorizontalGroup(
jPanel8Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel8Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel8Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(btnRC, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(btnCrypt, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel8Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(btnMD5, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(btnCC, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
jPanel8Layout.setVerticalGroup(
jPanel8Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel8Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel8Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(btnCrypt)
.addComponent(btnMD5))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel8Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(btnRC)
.addComponent(btnCC))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);

btnSave2.setFont(new java.awt.Font("Book Antiqua", 0, 12)); // NOI18N
btnSave2.setText("Save");
btnSave2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnSave2ActionPerformed(evt);
}
});

editor2.setEnabled(false);
jScrollPane2.setViewportView(editor2);

javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(spnGeser, javax.swing.GroupLayout.PREFERRED_SIZE, 75, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jPanel8, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(jScrollPane2, javax.swing.GroupLayout.DEFAULT_SIZE, 442, Short.MAX_VALUE))
.addContainerGap())
.addGroup(jPanel2Layout.createSequentialGroup()
.addGap(106, 106, 106)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(jPanel5, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(btnDes, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGap(64, 64, 64)
.addComponent(btnSave2)
.addGap(142, 142, 142))))
);
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGap(19, 19, 19)
.addComponent(spnGeser, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel8, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGap(18, 18, 18)
.addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 165, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(btnDes)
.addComponent(btnSave2))
.addGap(18, 18, 18)
.addComponent(jPanel5, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(36, Short.MAX_VALUE))
);

btnExit.setFont(new java.awt.Font("Book Antiqua", 0, 12));
btnExit.setText("Exit");
btnExit.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnExitActionPerformed(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()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(28, 28, 28)
.addComponent(btnExit, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGap(18, 18, 18)
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addContainerGap())
.addGroup(layout.createSequentialGroup()
.addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addContainerGap())
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addComponent(btnExit)
.addGap(219, 219, 219))))
);

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

private void btnExitActionPerformed(java.awt.event.ActionEvent evt) {
System.exit(0);
}

private void btnNewActionPerformed(java.awt.event.ActionEvent evt) {
editor.setText("");
btnSave.setEnabled(true);
btnSaveAs.setEnabled(true);
editor.requestFocus();
this.setTitle("Untitled - NOTES");
Nfile = true;
editor.setEnabled(true);
editor.setVisible(true);
}

private void btnOpenActionPerformed(java.awt.event.ActionEvent evt) {
int hasil = fc.showOpenDialog(this);
editor.setEnabled(true);
editor.setVisible(true);
btnSave.setEnabled(true);
btnSaveAs.setEnabled(true);
if (hasil == JFileChooser.APPROVE_OPTION) {
file = fc.getSelectedFile();
try {
editor.read(new FileInputStream(file), null);
} catch (IOException e) {
msg("Gagal Buka File : "+file.getName() );
return ;
}
}
this.setTitle(file.getName()+" - NOTES" );
Nfile = false;
text=file.getPath().toString();
txtnamafield.setText(text);
}

private void btnSaveActionPerformed(java.awt.event.ActionEvent evt) {
if (Nfile)
btnSaveAs.doClick();
else
SimpanFile();
}

private void btnSaveAsActionPerformed(java.awt.event.ActionEvent evt) {
if (fc.showSaveDialog(this) == JFileChooser.APPROVE_OPTION){
file = fc.getSelectedFile();
if (!file.exists() || okToReplace())
SimpanFile();
}
}

private void btnClearActionPerformed(java.awt.event.ActionEvent evt) {
editor.setText("");
}

private void btnSave2ActionPerformed(java.awt.event.ActionEvent evt) {
if (fc.showSaveDialog(this) == JFileChooser.APPROVE_OPTION){
file = fc.getSelectedFile();
if (!file.exists() || okToReplace())
SimpanFile2();
}
}

private void btnDesActionPerformed(java.awt.event.ActionEvent evt) {
if (txtCPass.getText().equals(txtPass.getText())){
JOptionPane.showMessageDialog(null, "Descryption Success");
editor2.setText(editor.getText());
}
else
JOptionPane.showMessageDialog(null, "What Are You Doing");
}

private void btnCryptActionPerformed(java.awt.event.ActionEvent evt) {
encrypt();
}

private void btnRCActionPerformed(java.awt.event.ActionEvent evt) {
String randomKey = "";
double randomNumber;
for (int i=0; i<editor.getText().length(); i++) {
randomNumber = Math.random() * 35 + (int)spnGeser.getValue();
randomKey = randomKey + (char)randomNumber;
}
editor2.setText(randomKey);
}

private void btnMD5ActionPerformed(java.awt.event.ActionEvent evt) {
EncryptMD5 md5=new EncryptMD5();
try {
editor2.setText(md5.MD5(editor.getText()));
} catch (NoSuchAlgorithmException ex) {
Logger.getLogger(ProjectIO.class.getName()).log(Level.SEVERE, null, ex);
} catch (UnsupportedEncodingException ex) {
Logger.getLogger(ProjectIO.class.getName()).log(Level.SEVERE, null, ex);
}
}

private void btnCCActionPerformed(java.awt.event.ActionEvent evt) {
getData=editor.getText();
getData=getData.trim();
len=getData.length();
con=getData.toCharArray();
j=len+1;
getData="";
try {
for( i1=0;i1<j;i1++){
a=con[i1];
k=(int)a;
k+=(int)spnGeser.getValue();
a=(char)k;
getData=getData+(a.toString());
} }
catch(Exception e){

}
System.out.println(getData);
System.out.println(len);
editor2.setText(getData);
}

private void jComboBox1ActionPerformed(java.awt.event.ActionEvent evt) {
if(jComboBox1.getSelectedItem().equals("New")){
editor.setText("");
btnSave.setEnabled(true);
btnSaveAs.setEnabled(true);
editor.requestFocus();
this.setTitle("Untitled - NOTES");
Nfile = true;
editor.setEnabled(true);
editor.setVisible(true);
}
if(jComboBox1.getSelectedItem().equals("Open")){
int hasil = fc.showOpenDialog(this);
editor.setEnabled(true);
editor.setVisible(true);
btnSave.setEnabled(true);
btnSaveAs.setEnabled(true);
if (hasil == JFileChooser.APPROVE_OPTION) {
file = fc.getSelectedFile();
try {
editor.read(new FileInputStream(file), null);
} catch (IOException e) {
msg("Gagal Buka File : "+file.getName() );
return ;
}
}
this.setTitle(file.getName()+" - NOTES" );
Nfile = false;
}
if(jComboBox1.getSelectedItem().equals("Save")){
if (Nfile)
btnSaveAs.doClick();
else
SimpanFile();
}
if(jComboBox1.getSelectedItem().equals("Save As")){
if (fc.showSaveDialog(this) == JFileChooser.APPROVE_OPTION){
file = fc.getSelectedFile();
if (!file.exists() || okToReplace())
SimpanFile();
}
}
}
private void msg(String pesan) {
JOptionPane.showMessageDialog(this,pesan,"Informasi",
JOptionPane.INFORMATION_MESSAGE);
}

private boolean okToReplace() {
return (JOptionPane.showConfirmDialog(this,
"File "+file.getName()+" Sudah Ada\n"+
"Akan Ditimpa ?",
"Peringatan",JOptionPane.YES_NO_OPTION)==0) ;
}

private void SimpanFile2() {
PrintWriter pw = null;
try {
pw = new PrintWriter(new BufferedWriter(new FileWriter(file)));
} catch (IOException e) {
msg("Gagal Simpan File : '" + file.getName());
return;
}
pw.print(editor2.getText());
pw.close();
this.setTitle(file.getName()+" - NOTES" );
Nfile = false;
}


private void SimpanFile() {
PrintWriter pw = null;
try {
pw = new PrintWriter(new BufferedWriter(new FileWriter(file)));
} catch (IOException e) {
msg("Gagal Simpan File : '" + file.getName());
return;
}
pw.print(editor.getText());
pw.close();
this.setTitle(file.getName()+" - NOTES" );
Nfile = false;
}

String getData,cs,main="";
char con[];
int len,hc,j=0;
int i1=0;
char bb[];
int k=0;
Character a;


public void encrypt() {
getData=editor.getText();
getData=getData.trim();
len=getData.length();
con=getData.toCharArray();
j=len-1;
getData="";
try {
for( i1=j;i1>=0;i1--){
a=con[i1];
k=(int)a;
k+=(int)spnGeser.getValue();
a=(char)k;
getData=getData+(a.toString());
} }
catch(Exception e){

}
System.out.println(getData);
System.out.println(len);
editor2.setText(getData);
}


public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {

public void run() {
new ProjectIO().setVisible(true);
}
});
}

class EncryptMD5 {

private String convertToHex(byte[] data) {
StringBuffer buf = new StringBuffer();
for (int i = 0; i < data.length; i++) {
int halfbyte = (data[i] >>> 4) & 0x0F;
int two_halfs = 0;
do {
if ((0 <= halfbyte) && (halfbyte <= 9))
buf.append((char) ('0' + halfbyte));
else
buf.append((char) ('a' + (halfbyte - (int)spnGeser.getValue())));
halfbyte = data[i] & 0x0F;
} while(two_halfs++ < 1);
}
return buf.toString();
}

public String MD5(String text)
throws NoSuchAlgorithmException, UnsupportedEncodingException {
MessageDigest md;
md = MessageDigest.getInstance("MD5");
byte[] md5hash = new byte[32];
md.update(text.getBytes("iso-8859-1"), 0, text.length());
md5hash = md.digest();
return convertToHex(md5hash);
}



}
// Variables declaration - do not modify
private javax.swing.JButton btnCC;
private javax.swing.JButton btnClear;
private javax.swing.JButton btnCrypt;
private javax.swing.JButton btnDes;
private javax.swing.JButton btnExit;
private javax.swing.JButton btnMD5;
private javax.swing.JButton btnNew;
private javax.swing.JButton btnOpen;
private javax.swing.JButton btnRC;
private javax.swing.JButton btnSave;
private javax.swing.JButton btnSave2;
private javax.swing.JButton btnSaveAs;
private javax.swing.JEditorPane editor;
private javax.swing.JEditorPane editor2;
private javax.swing.JComboBox jComboBox1;
private javax.swing.JLabel jLabel1;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JPanel jPanel3;
private javax.swing.JPanel jPanel4;
private javax.swing.JPanel jPanel5;
private javax.swing.JPanel jPanel8;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JSpinner spnGeser;
private javax.swing.JTextField txtCPass;
private javax.swing.JTextField txtPass;
private javax.swing.JTextField txtnamafield;
// End of variables declaration
}

setelah mengcoding coba running .. jika tidak ada yang error maka tampilannya akan seperti ini