Java

public static String importer_certificat(String alias,String nom_certi,String nom_keystore,String pass_keystore)
    {
        try{

            String b = "keytool -import -alias "+alias+" -file "+nom_certi+" -keystore "+nom_keystore +" -storepass "+pass_keystore;
            System.out.println(b);
            Process p = Runtime.getRuntime().exec(b);
            BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
            String inputLine, tous = "";
            while ((inputLine = in.readLine()) != null)
            {
                tous += "\n"+inputLine;
                System.out.println(inputLine);
            } 
            return tous;
        
        }catch(Exception e)
        {
            e.printStackTrace();
            return e.getMessage();
        }
    }

public static void main(String[] args) 
     {

         try
        {
            String[] dd = { "cmd.exe", "/C", "dir C:\\ >keytool-genkey-alias-keystore signLegal examplestanstore.jks" };
            
            Process p = Runtime.getRuntime().exec(dd);
            BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
            String inputLine;
            while ((inputLine = in.readLine()) != null) System.out.println(inputLine);

        
        }catch(Exception e)
        {
            e.printStackTrace();
        }
         
 

     }

import javax.swing.*;
 
import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.colorchooser.*;
import javax.swing.event.*;
import java.awt.geom.Line2D;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import javax.imageio.ImageIO;
 
 
public class PaintIt extends JFrame implements ActionListener{
 
 
     
public BufferedImage image = new BufferedImage(500, 500, BufferedImage.TYPE_INT_RGB);
//JPanel canvas = new JPanel();
     
    JPanel buttonPanel = new JPanel();
    Point lastPos = null;
    Point startPos = null;
    Point finishPos = null;
    Graphics g;
    JButton save = new JButton("Save");
    JButton cancel = new JButton("Cancel");
    JButton clear = new JButton("Clear");
    JButton proceed = new JButton("Proceed");
    JPanel canvas = new JPanel();
    int changer = 1;
    String path="";
     
    public PaintIt () {
 
         
        setLocation(100,100);
        setSize(600,500);
        setTitle("ENCODE SECTION");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        canvas.setBackground(Color.WHITE);
         
        clear.addActionListener(this);
        clear.setActionCommand("clear");
         
        save.addActionListener(this);
        save.setActionCommand("Save");
        
               
        cancel.addActionListener(this);
        cancel.setActionCommand("Cancel");
        
        proceed.addActionListener(this);
        proceed.setActionCommand("Proceed");
         
        //add buttons here
        
        buttonPanel.setLayout(new BoxLayout(buttonPanel, BoxLayout.LINE_AXIS));
        buttonPanel.setBorder(BorderFactory.createEmptyBorder(0, 10, 10, 10));
        buttonPanel.add(Box.createHorizontalGlue());
        buttonPanel.add(save);
        buttonPanel.add(Box.createRigidArea(new Dimension(10, 0)));
        buttonPanel.add(clear);
        buttonPanel.add(Box.createRigidArea(new Dimension(10, 0)));
        buttonPanel.add(cancel);
        buttonPanel.add(Box.createRigidArea(new Dimension(10, 0)));
        buttonPanel.add(proceed);
        
        //set the look
        getContentPane().add(canvas, BorderLayout.CENTER);
        getContentPane().add(buttonPanel, BorderLayout.SOUTH);
        setVisible(true);
         
        g = canvas.getGraphics();
        g.setColor(Color.BLACK);
 
        canvas.addMouseMotionListener(new MouseMotionListener () {                      
            public void mouseDragged (MouseEvent m) {
                Point p = m.getPoint() ;
                if (changer==1){
                g.drawLine(lastPos.x, lastPos.y, p.x, p.y) ;
                }           
                lastPos = p ;
 
            }   
            public void mouseMoved (MouseEvent m) {}
        });
                         
        canvas.addMouseListener(new MouseListener () {
            public void mouseClicked(MouseEvent e) {startPos = e.getPoint();}
            public void mousePressed(MouseEvent e) {lastPos = e.getPoint();}
            public void mouseReleased(MouseEvent e) {
            lastPos = null; 
            finishPos = e.getPoint(); 
            startPos = null;}
            public void mouseEntered(MouseEvent e) {}
            public void mouseExited(MouseEvent e) {}
            });
     
         
    }
     
     
     
    public void actionPerformed(ActionEvent e) {
        if("clear".equals(e.getActionCommand())) {
            repaint();
        }
        if("Save".equals(e.getActionCommand())) {
            new captureCanvasImage();
        }
        if("Cancel".equals(e.getActionCommand())) {
            dispose();
        }
        if("Proceed".equals(e.getActionCommand())) {
            new encode1Pane();
        }
         
             
    }
     
    class captureCanvasImage {
        public void capture(){
        Graphics g = image.createGraphics();
        canvas.paint(g);
        int w = canvas.getWidth();
        int h = canvas.getHeight();
        BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
        g.dispose();
        try
        {
            ImageIO.write(image, "jpg", new File("panel.jpg"));
        }
        catch(IOException ioe)
        {
            System.out.println("Panel write help: " + ioe.getMessage());
        }
    }}
   

    /*
    @Override
    public void invalidate() {     
    super.invalidate(); 
     
    this.paint(this.getGraphics()); 
    }
*/
     
    public static void main (String [] args) {
        PaintIt p = new PaintIt();
        p.setVisible(true);
    }
}