java MessageDigest

Made database connection class for my project that using mysql jdbc. I'm putting the code here incase anyone may find it usefull. Or you can download it from http://vc-digital.com/ConnectionDB.java

/*
* Created on March 25, 2005
*
*/
package sim;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.sql.*;
import java.util.Scanner;
import java.lang.String;

/**
* This source code is license under GPL
* Still working on password encryption
* You may use it, hack it and do what ever you want but please put my name as a credit if you
* are using this code for your application...
* If you find this code usefull for you please donate to the poor and homeless in your
* hood... giving to others will make you a better person. Trust me...
* Author o3ng. Contact me for any suggestion or question at avenpace@gmail.com
*
*/
class ConnectionDB {
private String [] cfg, cfgx;
private String read;
private Connection connection, connect;
private ResultSet rs;


public ConnectionDB() {
driverReg();
}
private String readConf() {
File fl = new File("db.conf");
try {
BufferedReader in = new BufferedReader(new FileReader(fl));
//String read;
read = in.readLine();

} catch (FileNotFoundException ee){
System.err.println("Can't find config file db.conf");
} catch (IOException oi){

}
return (read);
}
public ResultSet xecuteQuery(String query) {
String conRead = readConf();
System.out.println(conRead);
String delim = ":";
Scanner cfgFullx = new Scanner(conRead);
cfgFullx.useDelimiter(delim);
cfgx = new String[4];
int i = 0;
while (cfgFullx.hasNext()){
cfgx[i] = cfgFullx.next();
i++;
}
try {
Connection connection = DriverManager.getConnection("jdbc:mysql://" + cfgx[0] +"/" + cfgx[1] + "?user=" + cfgx[2] + "&password=" + cfgx[3]);
Statement statemen = connection.createStatement();
ResultSet rst = statemen.executeQuery(query);
setResult(rst);
//statemen.close();
//connection.close();

} catch (SQLException e) {
System.out.println("Connection error to the database");
}
getResult();
return this.rs;

}

public void updateQuery(String query) {
String conRead = readConf();
System.out.println(conRead);
String delim = ":";
Scanner cfgFull = new Scanner(conRead);
cfgFull.useDelimiter(delim);
cfg = new String[4];
int i = 0;
while (cfgFull.hasNext()){
cfg[i] = cfgFull.next();
//System.out.println(cfg[i]);
i++;
}
try {
Connection connect = DriverManager.getConnection("jdbc:mysql://" + cfg[0] +"/" + cfg[1] + "?user=" + cfg[2] + "&password=" + cfg[3]);
System.out.println(query);
Statement statement = connect.createStatement();
statement.executeUpdate(query);
statement.close();
connect.close();

} catch (SQLException e) {
System.out.println("Connection error to the database");
}
}


public void setResult(ResultSet frs){
this.rs = frs;
}

public ResultSet getResult(){
return this.rs;
}

public void driverReg(){
try {
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
System.out.println("Register driver");
} catch (Exception e){
System.err.println("Can't find jdbc driver");
System.exit(1);
}
}

}

The db hostname, db name, user and password store in external file called db.conf
The content of the db.conf file is "dbhostname:dbname:dbuser:dbpassword"
You can use this class by construct an ConnectionDB class object, for example

ConnectionDB conn = new ConnectionDB();
queryUp = "INSERT INTO simtable SET sesi='test'";
conn.updateQuery(queryUp);