Connecting to postgres database in java code

To connect your Java program with Postgresql driver, add the Postgresql library jar (postgresql-jdbc3-8.2.jar or any current jar file) file in the libraries. Then the following code can be modified for your particular database and table.

package javaapplication1;
import java.sql.*;
/**
*
* @author shankar
*/
public class Main {

/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
System.out.println("-------- PostgreSQL JDBC Connection Testing ------------");

try {
Class.forName("org.postgresql.Driver");
Connection connection = null;
connection = DriverManager.getConnection("jdbc:postgresql://127.0.0.1:5432/sample","postgres", "postgres");
if (connection != null)
{



String query="select ad_alert_id from ad_alert";
ResultSet rs=s.executeQuery(query);
while(rs.next())
{
System.out.print(" "+rs.getString(1));
}


}
else
System.out.println("Connection Failed!");
}
catch(Exception e){
e.printStackTrace();
}

}
}
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About Shankar Balachandran
Technical Manager, Openbravo operations, Kailao Consulting Private Limited

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