/*
 * Principal.java
 *
 * Created on 2 de Abril de 2007, 20:16
 */

/**
 *
 * @author  Lucas
 */
public class Principal extends javax.swing.JFrame {
    
    /** Creates new form Principal */
    public Principal() {
        initComponents();
    }

    public static String criptografar(String Texto)
    {
        String Criptografado="";
        //Percorre o Texto
        for(int i=0;i<Texto.length();i++)
        {
            int caractere = (int)Texto.charAt(i);//Pega o Caracter da posição já convertendo para Decimal
            if(caractere % 2==0)//Verifica se o decimal e PAR
                {
                    caractere -= 2;//SE FOR, TIRA 1
                }
            else
                {
                    caractere += 2;//SENÃO SOMA 2
                }
            char letra=(char)caractere;//Converte de Decimal para ASCII
            
            Criptografado+=letra;//Junta as Letras
        }
        System.out.println(Criptografado);
        return Criptografado;//Retorna o resultado para a função
    }
    
    public static String descriptografar(String Texto)
    {
        String descriptografado="";
        //Percorre o Texto
        for(int i=0;i<Texto.length();i++)
        {
            int caractere = (int)Texto.charAt(i);
            if(caractere % 2==0)
                {
                    caractere += 2;
                }
            else
                {
                    caractere -= 2;
                }
            char letra=(char)caractere;
            descriptografado+=letra;
        }
        System.out.println(descriptografado);
        return descriptografado;
    }
    // <editor-fold defaultstate="collapsed" desc=" Código Gerado ">                          
    private void initComponents() {
        jButton1 = new javax.swing.JButton();
        jLabel1 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        jTextField2 = new javax.swing.JTextField();
        jLabel2 = new javax.swing.JLabel();
        jTextField3 = new javax.swing.JTextField();
        jLabel3 = new javax.swing.JLabel();
        jButton2 = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Criptografia");
        setBounds(new java.awt.Rectangle(250, 250, 0, 0));
        setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR));
        setResizable(false);
        getAccessibleContext().setAccessibleName("Criptografia");
        jButton1.setText("Criptografar");
        jButton1.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton1MouseClicked(evt);
            }
        });

        jLabel1.setText("Texto:");

        jLabel2.setText("Criptografado:");

        jLabel3.setText("Descriptografado:");

        jButton2.setText("Sair");
        jButton2.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton2MouseClicked(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.TRAILING)
                    .addComponent(jLabel1)
                    .addComponent(jLabel2)
                    .addComponent(jLabel3))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                    .addComponent(jTextField3, javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jTextField2, javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jTextField1, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.PREFERRED_SIZE, 283, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                    .addComponent(jButton2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addComponent(jButton1, javax.swing.GroupLayout.DEFAULT_SIZE, 99, Short.MAX_VALUE))
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
        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(jButton1))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel2))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel3)
                    .addComponent(jButton2))
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
        pack();
    }// </editor-fold>                        

    private void jButton2MouseClicked(java.awt.event.MouseEvent evt) {                                      
        Principal.this.dispose();
    }                                     

    private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {                                      
        //Recupera o Texto do jTextField
        String Texto=jTextField1.getText();
        
        //Criptografa
        String Crip=criptografar(Texto);                
        
        //Exibe no jTextField 2
        jTextField2.setText(Crip);
        
        //Recupeta o Texto do jTextField2 Criptografado
        String TextoCripto = jTextField2.getText();
        //Descriptografa
        String Descri=descriptografar(TextoCripto);
        
        //Exibe no jTextField 2
        jTextField3.setText(Descri);
    }                                     
    
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Principal().setVisible(true);
            }
        });
    }
    
    // Declaração de variáveis - não modifique                     
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField jTextField2;
    private javax.swing.JTextField jTextField3;
    // Fim da declaração de variáveis                   
    
}