【加密解密】ADFGX密码 --图形界面实现加密解密

来源：互联网发布：mac怎么播放wmv 编辑：程序博客网时间：2024/06/16 21:42

（一）、加密：

Encrypt.java类：

package cn.hncu;import java.util.ArrayList;import java.util.Arrays;public class Encrypt {    private String message;    private String key;    public String getMessage() {        return message;    }    public void setMessage(String message) {        this.message = message;    }    public String getKey() {        return key;    }    public void setKey(String key) {        this.key = key;    }    public Encrypt() {    }    //（1）自定义字母表填满替换方格    public  char[][] letterTable(){        char[][] a=new char[6][6];//建立一个6行6列的二维数组，利用密文来对照此表中的每个字符，        a[0][1]='A';a[0][2]='D';a[0][3]='F';a[0][4]='G';a[0][5]='X';        a[1][0]='A';a[2][0]='D';a[3][0]='F';a[4][0]='G';a[5][0]='X';        a[1][1]='b';a[1][2]='t';a[1][3]='a';a[1][4]='l';a[1][5]='p';        a[2][1]='d';a[2][2]='h';a[2][3]='o';a[2][4]='z';a[2][5]='k';        a[3][1]='q';a[3][2]='f';a[3][3]='v';a[3][4]='s';a[3][5]='n';        a[4][1]='g';a[4][2]='j';a[4][3]='c';a[4][4]='u';a[4][5]='x';        a[5][1]='m';a[5][2]='r';a[5][3]='e';a[5][4]='w';a[5][5]='y';        return a;    }    //（2）获得中间替换结果    //中间替换结果是建立一个集合，集合中的第一个list放置明文，第二个list放置替换后的结果，以供下次使用替换结果    public ArrayList<Object> midRes(){        char[] chMess=message.toCharArray();//将明文变为字符数组        char[][] chLetter=letterTable();//调用整个字母表替换方格        ArrayList<String> chList=new ArrayList<String>();//用于放置明文的集合        ArrayList<String> strList=new ArrayList<String>();//用户放置替换结果的集合        ArrayList<Object> list=new ArrayList<Object>();//用于放置两个集合的总集合        list.add(chList);//将明文集合添加到list中        list.add(strList);//将替换结果添加到list中        //依次将明文的每个字符与字母表中的每个字符做比较        for(int k=0;k<chMess.length;k++){            for(int i=0;i<chLetter.length;i++){//第i行                for(int j=0;j<chLetter[i].length;j++){//第j列                    if(chMess[k]==chLetter[i][j]){//第k个明文字符是否与字母表中的某一个相等                        String ch=chMess[k]+"";//将字母转换为字符串                        String str=(chLetter[i][0]+""+chLetter[0][j]);                        chList.add(ch);                        strList.add(str);                    }                }            }        }        return list;//返回出集合结果    }    //（3）利用一个移位密钥加密    //得到移位加密后的格子    private char[][] shiftTable(){        ArrayList<String> list=(ArrayList<String>) midRes().get(1);//得到中间替换结果的集合        Object[] objs=list.toArray();//将其list转换为数组        StringBuffer strMidRes=new StringBuffer();//此字符串用于追加加密后的每个字符        for(Object s:objs){            strMidRes.append(s);//进行追加        }        char[] chKey=key.toUpperCase().toCharArray();//将旧密钥全部变为大写并且转换为字符数组        int n=strMidRes.length();//整个中间密文的长度        int col=chKey.length;//新的移位加密后的格子的列数        int row=n%col==0?n/col:n/col+1;//新的移位加密后的格子的行数        int k=0;        char[][] shiftTable=new char[row+1][col];//创建一个新的移位加密后的新格子        for(int i=0;i<shiftTable.length;i++){            for(int j=0;j<shiftTable[i].length;j++){                if(i==0){                    shiftTable[i][j]=chKey[j];//                }else{                    if(k<n){                        shiftTable[i][j]=strMidRes.charAt(k);//获得中间密文的第k个                        k++;                    }                    if(k==n && n%col!=0){//根据题目要求：最后不足一行的部分全部用X填充                        for(int t=n%col;t<col;t++){                            shiftTable[i][t]='X';                        }                    }                }            }        }        return shiftTable;    }    //（4）按照字母顺序排列密钥，形成新密文    public StringBuffer sortLetter(){        StringBuffer strbuf=new StringBuffer();        char[][] chTemp=shiftTable();//先得到整个移位后的格子        char[] chKey=key.toUpperCase().toCharArray();        Arrays.sort(chKey);        for(int i=0;i<chKey.length;i++){            for(int j=0;j<chTemp[0].length;j++){                if(chKey[i]==chTemp[0][j]){                    for(int x=1;x<chTemp.length;x++){                        strbuf.append(chTemp[x][j]);                    }                    strbuf.append(" ");                }            }        }        System.out.println(strbuf);        return strbuf;    }}

（二）解密：

Decrypted.java类：

package cn.hncu;import java.util.Arrays;public class Decrypted {    private String ciphertext;    private String key;    public Decrypted(){    }    public String getCiphertext() {        return ciphertext;    }    public void setCiphertext(String ciphertext) {        this.ciphertext = ciphertext;    }    public String getKey() {        return key;    }    public void setKey(String key) {        this.key = key;    }    /*排列密钥的字母顺序，根据新密钥、旧密钥排列顺序关系，     *排列出旧密钥的密文：即得到sortLetter()数组     */    private char[][] sortLetter(){        String key2=key;//将旧密钥key赋给新密钥key2        char[] chKey=key.toCharArray();//旧密钥变为字符数组，需要使用        char[] chKey2=key2.toCharArray();//新密钥也变为字符数组，也是需要使用到的        Arrays.sort(chKey2);//最关键的一步：密钥排序        char[] chCiphertext=ciphertext.replaceAll(" ", "").toCharArray();//替换密文中的所有空格为空，并将其变为字符数组        int row=chCiphertext.length/chKey.length;//根据密文字符的总个数与密钥字符的个数计算出新格子的行数        int col=chKey.length;//密钥字符的个数即为新格子的列数        char[][] chCipher=new char[row][col];//建立密文二维数组        /*         * 用for循环依次遍历两个密钥中的所有字符，         * 如果正好相等，则将旧密钥格子整列赋给新密钥格子对应的一列         */        for(int i=0;i<chKey.length;i++){            for(int j=0;j<chKey2.length;j++){                int len=col*j;                if(chKey[i]==chKey2[j]){                    for(int i2=0;i2<row;i2++){                        chCipher[i2][i]=chCiphertext[len++];//将整列的字符赋给新格子列                    }                }            }        }        return chCipher;    }    /*     * 解密查看中间替换结果：     * 通过得到的反向密文，分别以两个字符为一组计算出其字符对应的坐标，     * 将找到的字符追加到sb中，此sb便是最后解密出的明文     */    public StringBuffer shift(){        StringBuffer res=new StringBuffer();        char[][] chLetter=sortLetter();        char[][] leters= new Encrypt().letterTable();//得到整个字母表        char[] temp=new char[25];        int k=0;        for(int i=0;i<chLetter.length;i++){            for(int j=0;j<chLetter[i].length;j++){                temp[k]=chLetter[i][j];//依次拿出每个字母表中的字符                if((k+1)%2==0){                    int r=trans(temp[k-1]);//因为得到的是最外行和最外列的字符，需要得到其对应的数字坐标，这里用到一个转换方法                    int c=trans(temp[k]);                    res.append(leters[r][c]);                }                k++;            }        }        return res;    }    private int trans(char ch){        int n=0;        switch(ch){        case 'A':n=1;break;        case 'D':n=2;break;        case 'F':n=3;break;        case 'G':n=4;break;        case 'X':n=5;break;        }        return n;    }}

（三）、值对象：

FileMessage.java类：

package cn.hncu;public class FileMessage {    private String fileurlMessSrc;//加密明文地址    private String fileurlCry;//加密密文地址    private String fileurlCry2;//解密密文地址    private String fileurlMessSrc2;//解密明文地址    private String key;    private char[][] letters;    public String getFileurlMessSrc() {        return fileurlMessSrc;    }    public void setFileurlMessSrc(String fileurlMessSrc) {        this.fileurlMessSrc = fileurlMessSrc;    }    public String getFileurlCry() {        return fileurlCry;    }    public void setFileurlCry(String fileurlCry) {        this.fileurlCry = fileurlCry;    }    public String getFileurlCry2() {        return fileurlCry2;    }    public void setFileurlCry2(String fileurlCry2) {        this.fileurlCry2 = fileurlCry2;    }    public String getFileurlMessSrc2() {        return fileurlMessSrc2;    }    public void setFileurlMessSrc2(String fileurlMessSrc2) {        this.fileurlMessSrc2 = fileurlMessSrc2;    }    public String getKey() {        return key;    }    public void setKey(String key) {        this.key = key;    }    public char[][] getLetters() {        return letters;    }    public void setLetters(char[][] letters) {        this.letters = letters;    }}

（四）、文件工具：

FileUtils.java类：

package cn.hncu.utils;import java.awt.HeadlessException;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import java.util.ArrayList;import javax.swing.JFileChooser;import cn.hncu.Decrypted;import cn.hncu.Encrypt;import cn.hncu.FileMessage;public class FileUtils {    public static String openFile() {        File file=null;        try {            JFileChooser jfile=new JFileChooser();            jfile.showDialog(null, "打开");            file=jfile.getSelectedFile();            System.out.println(file.toString());        } catch (HeadlessException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }finally{            return file.toString();        }    }}

（五）、图形界面：

/* * mainFrame.java * * Created on __DATE__, __TIME__ */package cn.hncu.ui;import java.awt.event.ActionEvent;import java.awt.event.MouseEvent;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import javax.swing.JOptionPane;import cn.hncu.Decrypted;import cn.hncu.Encrypt;import cn.hncu.FileMessage;import cn.hncu.utils.FileUtils;/** *  * @author __USER__ */public class mainFrame extends javax.swing.JFrame {    /** Creates new form mainFrame */    public mainFrame() {        initComponents();        setTitle("ADFGX密码加密和解密");    }    /**     * 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.     */    //GEN-BEGIN:initComponents    // <editor-fold defaultstate="collapsed" desc="Generated Code">    //初始化所有参数：    FileMessage filemess=new FileMessage();    private void initComponents() {        jSplitPane1 = new javax.swing.JSplitPane();        jLabel1 = new javax.swing.JLabel();        jLabel2 = new javax.swing.JLabel();        tfdkey = new javax.swing.JTextField();        jLabel3 = new javax.swing.JLabel();        jScrollPane1 = new javax.swing.JScrollPane();        jtrepl = new javax.swing.JTextArea();        btnSave = new javax.swing.JButton();        jLabel4 = new javax.swing.JLabel();        tfdCry2 = new javax.swing.JTextField();        jLabel5 = new javax.swing.JLabel();        tfdmessSrc2 = new javax.swing.JTextField();        jLabel6 = new javax.swing.JLabel();        tfdmessSrc = new javax.swing.JTextField();        jLabel7 = new javax.swing.JLabel();        tfdCry = new javax.swing.JTextField();        jLabel8 = new javax.swing.JLabel();        jScrollPane2 = new javax.swing.JScrollPane();        jtRepRes = new javax.swing.JTextArea();        jLabel9 = new javax.swing.JLabel();        jLabel10 = new javax.swing.JLabel();        jScrollPane3 = new javax.swing.JScrollPane();        jtMess = new javax.swing.JTextArea();        jScrollPane4 = new javax.swing.JScrollPane();        jtCry = new javax.swing.JTextArea();        btnEncrypt = new javax.swing.JButton();        btnDecrypt = new javax.swing.JButton();        menuBar = new javax.swing.JMenuBar();        fileMenu = new javax.swing.JMenu();        openMenuItem = new javax.swing.JMenuItem();        saveMenuItem = new javax.swing.JMenuItem();        saveAsMenuItem = new javax.swing.JMenuItem();        exitMenuItem = new javax.swing.JMenuItem();        editMenu = new javax.swing.JMenu();        cutMenuItem = new javax.swing.JMenuItem();        copyMenuItem = new javax.swing.JMenuItem();        pasteMenuItem = new javax.swing.JMenuItem();        deleteMenuItem = new javax.swing.JMenuItem();        helpMenu = new javax.swing.JMenu();        contentsMenuItem = new javax.swing.JMenuItem();        aboutMenuItem = new javax.swing.JMenuItem();        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);        setFocusCycleRoot(false);        setMinimumSize(new java.awt.Dimension(1400, 700));        getContentPane().setLayout(null);        jLabel1.setFont(new java.awt.Font("宋体", 1, 24));        jLabel1.setForeground(new java.awt.Color(255, 0, 0));        jLabel1.setText("ADFGX\u5bc6\u7801");        getContentPane().add(jLabel1);        jLabel1.setBounds(490, 10, 130, 30);        jLabel2.setFont(new java.awt.Font("宋体", 1, 14));        jLabel2.setText("\u8bbe\u7f6e\u5bc6\u94a5\uff1a");        getContentPane().add(jLabel2);        jLabel2.setBounds(60, 80, 90, 20);        tfdkey.setFont(new java.awt.Font("Microsoft YaHei UI", 0, 18));        getContentPane().add(tfdkey);        tfdkey.setBounds(130, 80, 400, 30);        jLabel3.setFont(new java.awt.Font("宋体", 1, 14));        jLabel3.setText("\u8bbe\u7f6e\u66ff\u6362\u65b9\u683c\uff1a");        getContentPane().add(jLabel3);        jLabel3.setBounds(60, 120, 110, 20);        jtrepl.setColumns(20);        jtrepl.setFont(new java.awt.Font("Monospaced", 1, 18));        jtrepl.setRows(5);        jScrollPane1.setViewportView(jtrepl);        getContentPane().add(jScrollPane1);        jScrollPane1.setBounds(60, 150, 470, 180);        /////初始化字母表        Encrypt en = new Encrypt();        final char[][] chs = en.letterTable();        for (int i = 0; i < chs.length; i++) {            StringBuffer sb = new StringBuffer();            for (int j = 0; j < chs[i].length; j++) {                if (j == 0) {                    sb.append(chs[i][j]);                } else {                    sb.append("\t" + chs[i][j]);                }            }            String s = new String(sb);            jtrepl.append(s + "\n");            s = "";        }        /***         * 保存设置         */        btnSave.setFont(new java.awt.Font("宋体", 1, 14));        btnSave.setText("\u4fdd\u5b58\u8bbe\u7f6e");        btnSave.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(java.awt.event.ActionEvent evt) {                btnSaveActionPerformed(evt);            }            private void btnSaveActionPerformed(ActionEvent evt) {                String key=tfdkey.getText();                filemess.setKey(key);                filemess.setLetters(chs);                System.out.println("保存设置");            }        });        getContentPane().add(btnSave);        btnSave.setBounds(230, 350, 100, 30);        jLabel4.setFont(new java.awt.Font("宋体", 1, 14));        jLabel4.setText("\u660e\u6587\u6587\u4ef6\uff1a");        getContentPane().add(jLabel4);        jLabel4.setBounds(870, 140, 80, 30);        /**         * 解密：密文文件         */        tfdCry2.setFont(new java.awt.Font("Microsoft YaHei UI", 0, 18));        tfdCry2.addMouseListener(new java.awt.event.MouseAdapter() {            public void mouseClicked(java.awt.event.MouseEvent evt) {                tfdCry2MouseClicked(evt);            }            private void tfdCry2MouseClicked(java.awt.event.MouseEvent evt) {                System.out.println("解密密文文件");                String fileurlCry2=FileUtils.openFile();                tfdCry2.setText(fileurlCry2);                filemess.setFileurlCry2(fileurlCry2);            }        });        getContentPane().add(tfdCry2);        tfdCry2.setBounds(630, 140, 210, 30);        jLabel5.setFont(new java.awt.Font("宋体", 1, 14));        jLabel5.setText("\u5bc6\u6587\u6587\u4ef6\uff1a");        getContentPane().add(jLabel5);        jLabel5.setBounds(550, 140, 80, 30);        /**         * 解密：明文文件         */        tfdmessSrc2.setFont(new java.awt.Font("Microsoft YaHei UI", 0, 18));        tfdmessSrc2.addMouseListener(new java.awt.event.MouseAdapter() {            public void mouseClicked(java.awt.event.MouseEvent evt) {                tfdmessSrc2MouseClicked(evt);            }            private void tfdmessSrc2MouseClicked(MouseEvent evt) {                System.out.println("解密明文文件");                String fileurlMessSrc2=FileUtils.openFile();                tfdmessSrc2.setText(fileurlMessSrc2);                filemess.setFileurlMessSrc2(fileurlMessSrc2);            }        });        getContentPane().add(tfdmessSrc2);        tfdmessSrc2.setBounds(950, 140, 150, 30);        jLabel6.setFont(new java.awt.Font("宋体", 1, 14));        jLabel6.setText("\u5bc6\u6587\u6587\u4ef6\uff1a");        getContentPane().add(jLabel6);        jLabel6.setBounds(870, 80, 80, 30);        /**         * 加密：明文文件         */        tfdmessSrc.setFont(new java.awt.Font("Microsoft YaHei UI", 0, 18));        tfdmessSrc.addMouseListener(new java.awt.event.MouseAdapter() {            public void mouseClicked(java.awt.event.MouseEvent evt) {                tfdmessSrcMouseClicked(evt);            }            private void tfdmessSrcMouseClicked(MouseEvent evt) {                System.out.println("加密明文文件");                String fileurlMessSrc=FileUtils.openFile();                filemess.setFileurlMessSrc(fileurlMessSrc);                tfdmessSrc.setText(fileurlMessSrc);            }        });        getContentPane().add(tfdmessSrc);        tfdmessSrc.setBounds(630, 80, 210, 30);        jLabel7.setFont(new java.awt.Font("宋体", 1, 14));        jLabel7.setText("\u660e\u6587\u6587\u4ef6\uff1a");        getContentPane().add(jLabel7);        jLabel7.setBounds(550, 80, 80, 30);        /**         * 加密密文文件         */        tfdCry.setFont(new java.awt.Font("Microsoft YaHei UI", 0, 18));        tfdCry.addMouseListener(new java.awt.event.MouseAdapter() {            public void mouseClicked(java.awt.event.MouseEvent evt) {                tfdCryMouseClicked(evt);            }            private void tfdCryMouseClicked(MouseEvent evt) {                System.out.println("加密密文文件");                String fileurlCry=FileUtils.openFile();                filemess.setFileurlCry(fileurlCry);                tfdCry.setText(fileurlCry);            }        });        getContentPane().add(tfdCry);        tfdCry.setBounds(950, 80, 150, 30);        jLabel8.setFont(new java.awt.Font("宋体", 1, 14));        jLabel8.setText("\u66ff\u6362\u7ed3\u679c\uff1a");        getContentPane().add(jLabel8);        jLabel8.setBounds(550, 240, 80, 30);        jtRepRes.setColumns(20);        jtRepRes.setEditable(false);        jtRepRes.setFont(new java.awt.Font("Monospaced", 1, 18));        jtRepRes.setRows(5);        jScrollPane2.setViewportView(jtRepRes);        getContentPane().add(jScrollPane2);        jScrollPane2.setBounds(630, 200, 650, 90);        jLabel9.setFont(new java.awt.Font("宋体", 1, 14));        jLabel9.setText("\u660e\u6587\uff1a");        getContentPane().add(jLabel9);        jLabel9.setBounds(560, 300, 50, 30);        jLabel10.setFont(new java.awt.Font("宋体", 1, 14));        jLabel10.setText("\u5bc6\u6587\uff1a");        getContentPane().add(jLabel10);        jLabel10.setBounds(930, 310, 50, 20);        jtMess.setColumns(20);        jtMess.setEditable(false);        jtMess.setFont(new java.awt.Font("Monospaced", 1, 18));        jtMess.setRows(5);        jScrollPane3.setViewportView(jtMess);        getContentPane().add(jScrollPane3);        jScrollPane3.setBounds(630, 310, 290, 250);        jtCry.setColumns(20);        jtCry.setEditable(false);        jtCry.setFont(new java.awt.Font("Monospaced", 1, 18));        jtCry.setRows(5);        jScrollPane4.setViewportView(jtCry);        getContentPane().add(jScrollPane4);        jScrollPane4.setBounds(980, 310, 300, 250);        /**         * 按钮：加密         */        btnEncrypt.setFont(new java.awt.Font("宋体", 1, 14));        btnEncrypt.setText("\u52a0\u5bc6");        btnEncrypt.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(java.awt.event.ActionEvent evt) {                btnEncryptActionPerformed(evt);            }            private void btnEncryptActionPerformed(ActionEvent evt) {                System.out.println("按钮：加密");                //FileUtils.encryptFile(filemess);                Encrypt en=new Encrypt();                en.setKey(filemess.getKey());                BufferedReader br=null;                BufferedWriter bw=null;                try {                    br=new BufferedReader(new FileReader(new File(filemess.getFileurlMessSrc())));                    bw=new BufferedWriter(new FileWriter(new File(filemess.getFileurlCry())));                    String str=null;                    while((str=br.readLine())!=null){                        jtMess.append(str+"\n");                        en.setMessage(str.replaceAll(" ", "").toLowerCase());                        String s=new String(en.sortLetter());                        bw.write(s);                        jtCry.append(s+"\n");                        String s1=en.midRes().get(0).toString().replaceAll(",", " ");                        String s2=en.midRes().get(1).toString().replaceAll(",", "");                        jtRepRes.append(s1+"\n");                        jtRepRes.append(s2+"\n");                        bw.write("\r\n");                        bw.flush();                    }                } catch (Exception e) {                    e.printStackTrace();                }finally{                    try {                        br.close();                        bw.close();                    } catch (IOException e) {                        e.printStackTrace();                    }                    JOptionPane.showMessageDialog(null, "文件加密成功！");                }            }        });        getContentPane().add(btnEncrypt);        btnEncrypt.setBounds(1120, 80, 80, 30);        /**         * 按钮：解密         */        btnDecrypt.setFont(new java.awt.Font("宋体", 1, 14));        btnDecrypt.setText("\u89e3\u5bc6");        btnDecrypt.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(java.awt.event.ActionEvent evt) {                btnDecryptActionPerformed(evt);            }            private void btnDecryptActionPerformed(ActionEvent evt) {                System.out.println("按钮：解密");                Decrypted de=new Decrypted();                de.setKey(filemess.getKey());                BufferedReader br=null;                BufferedWriter bw=null;                try {                    br=new BufferedReader(new FileReader(new File(filemess.getFileurlCry2())));                    bw=new BufferedWriter(new FileWriter(new File(filemess.getFileurlMessSrc2())));                    String str=null;                    while((str=br.readLine())!=null){                        System.out.println("密文："+str);                        jtCry.append(str+"\n");                        de.setCiphertext((str.replaceAll(" ", "").toUpperCase()));                        String s=new String(de.shift());                        System.out.println("明文："+s);                        bw.write(s);                        jtMess.append(s+"\n");                        bw.write("\r\n");                        bw.flush();                    }                } catch (Exception e) {                    e.printStackTrace();                }finally{                    try {                        br.close();                        bw.close();                    } catch (IOException e) {                        e.printStackTrace();                    }                }                JOptionPane.showMessageDialog(null, "文件解密成功！");            }        });        getContentPane().add(btnDecrypt);        btnDecrypt.setBounds(1120, 140, 80, 30);        fileMenu.setText("File");        openMenuItem.setText("Open");        fileMenu.add(openMenuItem);        saveMenuItem.setText("Save");        fileMenu.add(saveMenuItem);        saveAsMenuItem.setText("Save As ...");        fileMenu.add(saveAsMenuItem);        exitMenuItem.setText("Exit");        exitMenuItem.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(java.awt.event.ActionEvent evt) {                exitMenuItemActionPerformed(evt);            }        });        fileMenu.add(exitMenuItem);        menuBar.add(fileMenu);        editMenu.setText("Edit");        cutMenuItem.setText("Cut");        editMenu.add(cutMenuItem);        copyMenuItem.setText("Copy");        editMenu.add(copyMenuItem);        pasteMenuItem.setText("Paste");        editMenu.add(pasteMenuItem);        deleteMenuItem.setText("Delete");        editMenu.add(deleteMenuItem);        menuBar.add(editMenu);        helpMenu.setText("Help");        contentsMenuItem.setText("Contents");        helpMenu.add(contentsMenuItem);        aboutMenuItem.setText("About");        helpMenu.add(aboutMenuItem);        menuBar.add(helpMenu);        setJMenuBar(menuBar);        pack();    }// </editor-fold>    //GEN-END:initComponents    private void exitMenuItemActionPerformed(java.awt.event.ActionEvent evt) {// GEN-FIRST:event_exitMenuItemActionPerformed        System.exit(0);    }// GEN-LAST:event_exitMenuItemActionPerformed    /**     * @param args     *            the command line arguments     */    public static void main(String args[]) {        java.awt.EventQueue.invokeLater(new Runnable() {            public void run() {                new mainFrame().setVisible(true);            }        });    }    //GEN-BEGIN:variables    // Variables declaration - do not modify    private javax.swing.JMenuItem aboutMenuItem;    private javax.swing.JButton btnDecrypt;    private javax.swing.JButton btnEncrypt;    private javax.swing.JButton btnSave;    private javax.swing.JMenuItem contentsMenuItem;    private javax.swing.JMenuItem copyMenuItem;    private javax.swing.JMenuItem cutMenuItem;    private javax.swing.JMenuItem deleteMenuItem;    private javax.swing.JMenu editMenu;    private javax.swing.JMenuItem exitMenuItem;    private javax.swing.JMenu fileMenu;    private javax.swing.JMenu helpMenu;    private javax.swing.JLabel jLabel1;    private javax.swing.JLabel jLabel10;    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 jScrollPane3;    private javax.swing.JScrollPane jScrollPane4;    private javax.swing.JSplitPane jSplitPane1;    private javax.swing.JTextArea jtCry;    private javax.swing.JTextArea jtMess;    private javax.swing.JTextArea jtRepRes;    private javax.swing.JTextArea jtrepl;    private javax.swing.JMenuBar menuBar;    private javax.swing.JMenuItem openMenuItem;    private javax.swing.JMenuItem pasteMenuItem;    private javax.swing.JMenuItem saveAsMenuItem;    private javax.swing.JMenuItem saveMenuItem;    private javax.swing.JTextField tfdCry;    private javax.swing.JTextField tfdCry2;    private javax.swing.JTextField tfdkey;    private javax.swing.JTextField tfdmessSrc;    private javax.swing.JTextField tfdmessSrc2;    // End of variables declaration//GEN-END:variables}