DBConnection

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package excercise.b;

import java.sql.*;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author triad
 */
public class DBtest {
    String URL = "jdbc:mysql:localhost:3306/userdetails";
    String USER = "root";
    String PASS = "";
    //Table
    String table = "userdetails";
    String tablelogin = "logindetails";

    public Connection getConnection(){
        try {
            Connection c = DriverManager.getConnection(URL,USER,PASS);
            return c;
        } catch (SQLException ex) {
            Logger.getLogger(DBtest.class.getName()).log(Level.SEVERE, null, ex);
            return null;
        }
    }

    //Get Data from any table
    public ResultSet getTableData(String table){
        try {
            //To execute Query you require PreparedStatements and the Connection
            Connection c = getConnection();
            String sql = "SELECT * from " + table;

            PreparedStatement st = c.prepareStatement(sql);
            //When Selecting data use executeQuery, but if not getting data in a resultset like Update, delete, add use executeUpdate()
            ResultSet rs = st.executeQuery();
            return rs;
        } catch (SQLException ex) {
            Logger.getLogger(DBtest.class.getName()).log(Level.SEVERE, null, ex);
            return null;
        }

    }



}