ciao ragazzi,
aiuto...
fino a poco tempo fa andava...
questo programma:
poi non so che ho fatto,invece di uscire una stringa casuale di 16 caratteri mi esce una lettera casuale...
come mai???
essendo che è tanto code, vi iporto il meccanismo di generazione raNdom:
aiuto...
fino a poco tempo fa andava...
questo programma:
Codice:
public class password_gen extends javax.swing.JFrame {
/** Creates new form password_gen */
// creates a public alfabeto
String alfabeto = "qwertyuiopasdfghjklzxcvbnm|!£$%&/()=?^1234567890ìé*òàù,.-;:_";
int n=0; // public lenght password
public password_gen() {
initComponents();
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jLabel1 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jLabel2 = new javax.swing.JLabel();
jToggleButton1 = new javax.swing.JToggleButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Password generation by kr1pn0$");
setResizable(false);
jButton1.setText("calcola");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jButton2.setText("altro...");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
jLabel1.setText("by Kr1pn0$, 2008-2009");
jTextField1.setEditable(false);
jLabel2.setText("La lunghezza predefinita è di 16 livello normale e 32 professionale");
jToggleButton1.setText("professionale");
jToggleButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jToggleButton1ActionPerformed(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)
.addComponent(jToggleButton1, javax.swing.GroupLayout.DEFAULT_SIZE, 337, Short.MAX_VALUE)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jButton1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(layout.createSequentialGroup()
.addGap(47, 47, 47)
.addComponent(jLabel1)))
.addGap(18, 18, 18)
.addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 148, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 327, Short.MAX_VALUE)
.addComponent(jLabel2))
.addContainerGap())))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jToggleButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 66, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 46, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jButton1, javax.swing.GroupLayout.DEFAULT_SIZE, 46, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jLabel1)
.addContainerGap())
);
pack();
}// </editor-fold>
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
n=16;
String password ="";
for(int i=0; i<n; ++i)
{
int temp=(int)(Math.random()*40); //creo un indice casuale
password = alfabeto.substring(temp, temp+1); //prendo un carattere
}
jTextField1.setText(password);
}
private void jToggleButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
n=32;
}
/* jTextField1
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new password_gen().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JTextField jTextField1;
private javax.swing.JToggleButton jToggleButton1;
// End of variables declaration
}
come mai???
essendo che è tanto code, vi iporto il meccanismo di generazione raNdom:
Codice:
n=16;
String password ="";
for(int i=0; i<n; ++i)
{
int temp=(int)(Math.random()*40); //creo un indice casuale
password = alfabeto.substring(temp, temp+1); //prendo un carattere
}
jTextField1.setText(password);