newjframe.java

Caeser加密解密算法

/*
 * NewJFrame.java
 *
 * Created on 2007年11月21日, 下午6:26
 */

package caesercipher;

/**
 *
 * @author  Administrator
 */
public class NewJFrame extends javax.swing.JFrame {
    
    /** Creates new form NewJFrame */
    public NewJFrame() {
        initComponents();
    }
    
    /** 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.
     */
    // <editor-fold defaultstate="collapsed" desc=" 生成的代码 ">//GEN-BEGIN:initComponents
    private void initComponents() {
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jSlider1 = new javax.swing.JSlider();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jButton1.setText("ENCRYPT");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jButton2.setText("DECRYPT");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });

        jSlider1.setForeground(new java.awt.Color(255, 255, 255));
        jSlider1.setMaximum(25);
        jSlider1.setMinimum(1);
        jSlider1.setMinorTickSpacing(1);
        jSlider1.setPaintLabels(true);
        jSlider1.setSnapToTicks(true);
        jSlider1.setValue(0);
        jSlider1.setValueIsAdjusting(true);
        jSlider1.addChangeListener(new javax.swing.event.ChangeListener() {
            public void stateChanged(javax.swing.event.ChangeEvent evt) {
                jSlider1StateChanged(evt);
            }
        });

        jLabel1.setText("key");

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

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(20, 20, 20)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
                        .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 36, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jSlider1, javax.swing.GroupLayout.PREFERRED_SIZE, 240, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(32, 32, 32)
                        .addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 17, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 248, Short.MAX_VALUE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jButton1)
                            .addComponent(jButton2))))
                .addGap(26, 26, 26))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(25, 25, 25)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jLabel1)
                            .addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, 25, Short.MAX_VALUE))
                        .addGap(28, 28, 28))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jSlider1, javax.swing.GroupLayout.DEFAULT_SIZE, 47, Short.MAX_VALUE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)))
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jButton1)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(jButton2))
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 121, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(86, 86, 86))
        );
        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed
// TODO 将在此处添加您的处理代码：
         String s=""; String t=""; 
        s=jTextArea1.getText();
        for(int i=0;i<s.length();i++){
        char c=s.charAt(i);
        if(c>='a'&&c<='z'){
        c-=k%26;
        if(c<'a')  c+=26;
        if(c>'z')  c-=26;
        }
         if(c>='A'&&c<='Z'){
         c-=k%26; 
        if(c<'A')  c+=26;
        if(c>'Z')  c-=26;
        }
        t+=c;
        }
        jTextArea1.setText(""+t);
    }//GEN-LAST:event_jButton2ActionPerformed

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
// TODO 将在此处添加您的处理代码：
        String s=""; String t=""; 
        s=jTextArea1.getText();
        for(int i=0;i<s.length();i++){
        char c=s.charAt(i);
        if(c>='a'&&c<='z'){
        c+=k%26;
        if(c<'a')  c+=26;
        if(c>'z')  c-=26;
        }
         if(c>='A'&&c<='Z'){
         c+=k%26; 
        if(c<'A')  c+=26;
        if(c>'Z')  c-=26;
        }
        t+=c;
        }
        jTextArea1.setText(""+t);
        
    }//GEN-LAST:event_jButton1ActionPerformed

    private void jSlider1StateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_jSlider1StateChanged
// TODO 将在此处添加您的处理代码：
       k=jSlider1.getValue();
      jLabel2.setText(""+k);
    }//GEN-LAST:event_jSlider1StateChanged
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new NewJFrame().setVisible(true);
            }
        });
    }
    int k=0;
    // 变量声明 - 不进行修改//GEN-BEGIN:variables
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JSlider jSlider1;
    private javax.swing.JTextArea jTextArea1;
    // 变量声明结束//GEN-END:variables
    
}