Connection using Jdbc-odbc bridge Driver

This section contains the details about creating connection using Jdbc-odbc bridge driver in java.

Connection using Jdbc-odbc bridge Driver

For understanding jdbc, we are taking an example first :

import java.sql.*;

public class JdbcOdbc {
	public static void main(String args[]) {

	try {
	Connection con;
	Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
	con = DriverManager.getConnection("jdbc:odbc:datastud");
	try {
		System.out.println("Getting All Rows from a table!");
		Statement st = con.createStatement();
		ResultSet res = st.executeQuery("SELECT * FROM  college");
		System.out.println("student_code: " + "\t" + "student_name: ");
		while (res.next()) {
			int i = res.getInt("stud_code");
			String s = res.getString("stud_name");
			System.out.println(i + "\t\t" + s);
		}
		con.close();
	} catch (SQLException s) {
		System.out.println("SQL code does not execute.");
	}
	} catch (Exception e) {
		System.out.println("Error:connection not created");
	}

	}

}

Output

Description of Program

In the above program, Jdbc-Odbc bridge driver create connection between java application and 'MSAccess database'. After creating connection it also execute query.

Description of code

import java.sql  Since 'java.sql' class support all the methods needed to create connection. we need to import it first.

Connection con;  Creation of "connection" class object ,which is used to represent connection and also used to create "statement" class object for executing query.

Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); In this program "forName()" function is used to load the JDBC-ODBC bridge driver. It takes driver name as an argument and load it by checking it's availability.

con=DriverManager.getConnection("jdbc:odbc:datastud"); In the above code, connection class object 'con' is used by DriverManager to  connect to database using "getConnection()" ."getConnection()"  takes url of database and datasource name. to create connection.

Statement st = con.createStatement();   In this code line ,we create 'Statement' class object using 'con' object of connection. The Statement object is used to fetch result set by executing query.

ResultSet res = st.executeQuery("SELECT * FROM college");  In this snippet, statement class object "st" executes query and store result in "ResultSet" class object "res".

con.close(); It is used to close the connection open by con object.

Steps to connect JDBC-ODBC bridge driver with database 

Step1: First, create a database using "MS Access", which must have the same name ,which you use for query and column name must be same as you use for retrieving values from database.

Step2: Go to Start >control panel >Administrative tool > Data source (ODBC).

Step3: Double click on Data source (ODBC),click on "Add" button, Select MS Access driver...click on "Finish" button.

Step4: Give name to "Data source name". Click on "Select" button and browse your MS access file of  ".mbd" extension .Click "OK"

Step5: Now your database is ready to connect using JDBC-ODBC bridge driver. For this you have to mention Data source name in your application. 

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