Another problem, sql table creating, no respond

Question

What im trying to do is create table mysql table. My code looks like this:
import java.sql.*;
public class HelloWorldApp {
     public static Connection con = null;
     public static Statement stmt;
     public static void createConnection() {
          try {
               String serverName = "127.0.0.1";
               String mydatabase = "java";
               String url = "jdbc:mysql://" + serverName + "/" + mydatabase;
               Class.forName("com.mysql.jdbc.Driver").newInstance();
               con = DriverManager.getConnection(url, "root", "");
               stmt = con.createStatement();
          } catch (Exception e) {
               e.printStackTrace();
     public static void createTable(String tableName) {
          try {
               Statement stmt = con.createStatement();
               String sql = "CREATE TABLE tableName(col_string VARCHAR(254))";
               stmt.executeUpdate(sql);
                  System.out.println("Table built: "+tableName);
          } catch (SQLException e) {
               e.printStackTrace();
          public static void main(String args[]) {
                  System.out.println("Hello World!");
               createConnection();
               createTable("test");
}And the problem is, that after it prints "Hello world!" nothing hapands, its even not exits if i remove "pause" from run.bat. Anyway im stuck, please help.
Edited by: Godsent on Jan 1, 2009 2:00 PM
Edited by: Godsent on Jan 1, 2009 2:03 PM

Answer 1

A few notes on your code:
* Don't import everything from a given package, only what you need.
* Your tableName variable is not being used. You are using tableName literally in your variable named sql.
* This variable is not being used as you think
public static Statement stmt;You are creating a local variable with the same name in the the createTable method.
* You should always close your connections and statements. Read the API docs for each of these classes.
* Don't make everything static. Use instance variables and create an instance of your class with the new operator.
Are you getting any sort of error message printed to the shell? You could try adding more System.out.println() calls to see what's going on.