Main

package fr.elecsprint73;

import java.security.NoSuchAlgorithmException;
import java.sql.SQLException;
import java.util.Scanner;

public class Main {

	public static Sql sq;

	public static void main(String[] args) {

		String speudo;
		String mdp;
		String email;
	    String urlbase = "jdbc:mysql://" ;
	    String host = "localhost" ;
	    String Database = "projet2019" ;
	    String user = "root" ;
	    String pass = "" ;

	sq = new Sql(urlbase, host, Database, user, pass);
	(ligne 23) sq.connection();

	if(!sq.isConnect()) System.exit(0);;

	Scanner sc = new Scanner(System.in);

	System.out.println("Votre speudo ?");
	speudo = sc.nextLine();

	System.out.println("Votre mot de passe ?");
	mdp = sc.nextLine();

	System.out.println("Votre email ?");
	email = sc.nextLine();

 try {
	sq.inscription(speudo, email, mdp);
} catch (NoSuchAlgorithmException | SQLException e) {
	e.printStackTrace();
}


	}
	}
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Sql
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package fr.elecsprint73;

import java.security.NoSuchAlgorithmException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;

import fr.elecsprint73.inscription.Inscription;

public class Sql {

	public static  Connection connection;
	String  urlbase ,  host , Database , user  , pass;

	public  Sql(String urlbase , String host , String Database , String user , String pass) {

		this.urlbase = urlbase;
		this.host = host;
		this.Database = Database;
		this.user = user;
		this.pass = pass;
	}

	public void connection() {
		try {
	(ligne 27) connection = DriverManager.getConnection(urlbase + host + "/" + Database , user , pass);
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}

	public boolean isConnect() {
		return connection != null;
	}

	public void disconnection() {

		if(connection == null) return;

		try {
			connection.close();
		} catch (SQLException e) {
			e.printStackTrace();
		}

	}

public void inscription(String speudo , String email ,String mdp) throws NoSuchAlgorithmException, SQLException {

	PreparedStatement ps = connection.prepareStatement("INSERT INTO inscription(UUID,SPEUDO,MDP,EMAIL) VALUES (?,?,?,?)");
	ps.setString(1, Inscription.UUID());
	ps.setString(2, speudo);
	ps.setString(3, Inscription.Hashage(mdp));
	ps.setString(4, email);
	ps.execute();
	ps.close();

}
}
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Inscription
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package fr.elecsprint73.inscription;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class Inscription {

public static String Hashage(String mdp) throws NoSuchAlgorithmException {

	 MessageDigest md = MessageDigest.getInstance("SHA-256");
     md.update(mdp.getBytes());

     byte byteData[] = md.digest();

     StringBuffer sb = new StringBuffer();
     for (int i = 0; i < byteData.length; i++) {

      sb.append(Integer.toString((byteData[i] & 0xff) + 0x100, 16).substring(1));

     }

    return sb.toString();
}

public static String UUID() {

return  java.util.UUID.randomUUID().toString();

}

}