import java.sql.DriverManager;

import java.sql.Connection;

import java.sql.SQLException;


public class Example1 {

  public static void main(String[] argv) {

  System.out.println("Checking if Driver is registered with DriverManager.");


  try {

    Class.forName("org.postgresql.Driver");

  } catch (ClassNotFoundException cnfe) {

    System.out.println("Couldn't find the driver!");

    System.out.println("Let's print a stack trace, and exit.");

    cnfe.printStackTrace();

    System.exit(1);

  }


  System.out.println("Registered the driver ok, so let's make a connection.");


  Connection c = null;


  try {

    // The second and third arguments are the username and password,

    // respectively. They should be whatever is necessary to connect

    // to the database.

    c = DriverManager.getConnection("jdbc:postgresql://localhost/DBname",

                                    "DBuser", "DBpassword");

  } catch (SQLException se) {

    System.out.println("Couldn't connect: print out a stack trace and exit.");

    se.printStackTrace();

    System.exit(1);

  }


  if (c != null)

    System.out.println("Hooray! We connected to the database!");

  else

    System.out.println("We should never get here.");

  }

}

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