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package javaapp1;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author Manas
 */
public class JavaApp1 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        System.out.println("main block executing ");
        Connection con = null;  
        Statement st = null;
        ResultSet rs = null;
        // 
        String url = "jdbc:postgresql://localhost/pgsdemo1";
        String user = "manas237";
        String password = "pwmanas237";
        System.out.println("host user and password ---passd through ");
        try {
            con = DriverManager.getConnection(url, user, password);
            st = con.createStatement();
            rs = st.executeQuery("SELECT VERSION()");
            if (rs.next()) {
                System.out.println(rs.getString(1));
            }
            System.out.println("Data Base connected ");
        } catch (SQLException ex) {
            Logger lgr = Logger.getLogger(JavaApp1.class.getName());
            lgr.log(Level.SEVERE, ex.getMessage(), ex);

        } finally {
            try {
                if (rs != null) {
                    rs.close();
                    System.out.println("Resultset from executeQuery... closed");
                }
                if (st != null) {
                    st.close();
                    System.out.println("Statement createStament... closed");
                }
                if (con != null) {
                    con.close();
                    System.out.println("DB connection... cloased");
                }
                     System.out.println("finally block executing ");
            } catch (SQLException ex) {
                Logger lgr = Logger.getLogger(JavaApp1.class.getName());
                lgr.log(Level.WARNING, ex.getMessage(), ex);
            }
        }
        
        
        // main block ends here
    }
}