Create a simple connection with mysql

Question

hello
my name is edvanio i am from brazil.
i'd like to connect one program in Java with mysql for insert, delete and update one simple base ex. teste with nome and fone.
thank , bye

Answer 1

here's a couple of sites
http://www.javacoding.net/articles/technical/java-mysql.html
http://www.developer.com/java/data/article.php/3417381
I recently installed MySQL (just to see if I could get a working program to run)
these were the steps
1. downloaded MySQL
2. downloaded the connector file
3. unzipped/installed MySQL
4. unzipped the connector file
mysql-connector-java-3.0.17-ga-bin.jar
copied the jar file into this directory
C:\Program Files\Java\jdk1.5.0_03\jre\lib\ext
5. opened MySQL, using the code from Gamelan
create the db JunkDB
created the user, permissions, password
6. combined the code from both sites (code follows)
and it worked OK
import java.sql.*;
class MySQL_Test
  public MySQL_Test() throws Exception
    testDriver();
    Connection con = getConnection();
    executeUpdate(con,"CREATE TABLE test(id int,text varchar(20))");
    executeUpdate(con,"insert into test(id,text) values (1,'first entry')");
    executeUpdate(con,"insert into test(id,text) values (2,'second entry')");
    executeUpdate(con,"insert into test(id,text) values (3,'third entry')");
    executeQuery(con,"select * from test");
    executeUpdate(con,"drop table test");
    con.close();
  protected void testDriver() throws Exception
    try
      Class.forName("com.mysql.jdbc.Driver");
      System.out.println("MySQL Driver found");
    catch(ClassNotFoundException cnfe)
      System.out.println("OOPs - MySQL Driver nowhere to be found");
      throw (cnfe);
  protected Connection getConnection() throws Exception
    String url = "";
    try
      url = "jdbc:mysql://localhost:3306/JunkDB";
      Connection con = DriverManager.getConnection(url,"auser","drowssap");
      System.out.println("Connection OK");
      return con;
    catch(SQLException sqle)
      System.out.println("OOPs - No Connection");
      throw (sqle);
  protected void executeUpdate(Connection con,String sqlStatement) throws Exception
    try
      Statement s = con.createStatement();
      s.execute(sqlStatement);
      s.close();
    catch(SQLException sqle)
      System.out.println("OOPs - error executing statement");
      throw (sqle);
  protected void executeQuery(Connection con,String sqlStatement) throws Exception
    try
      Statement s = con.createStatement();
      ResultSet rs = s.executeQuery(sqlStatement);
      while(rs.next())
        String id = (rs.getObject("id").toString());
        String text = (rs.getObject("text").toString());
        System.out.println("Found record "+id+" "+text);
      rs.close();
    catch(SQLException sqle)
      System.out.println("OOPs - error executing resultset");
      throw (sqle);
  public static void main(String[] args)
    try
      new MySQL_Test();
    catch(Exception e){e.printStackTrace();}
}