Sunday, 13 July 2014

JDBC DatabaseMetadata Demo


















Click here to watch in Youtube : https://www.youtube.com/watch?v=9thq3gQoFtY

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JDBCDatabaseMetaDataDemo Project Dir Structure

JDBCDatabaseMetaDataDemo.java
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class JDBCDatabaseMetaDataDemo
{
    // JDBC driver name and database URL
    static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
    static final String DB_URL = "jdbc:mysql://localhost:3306/world";

    // Database credentials
    static final String USERNAME = "root";
    static final String PASSWORD = "root";

    public static void main(String[] args)
    {

        JDBCDatabaseMetaDataDemo jdbcDatabaseMetaDataDemo = new JDBCDatabaseMetaDataDemo();
        jdbcDatabaseMetaDataDemo.getDatabaseMetadataInformation();

    }

    private void getDatabaseMetadataInformation()
    {
        Connection connection = null;
        Statement stmt = null;
        try
        {
            /*
             * Register the JDBC driver in DriverManager
             */

            Class.forName(JDBC_DRIVER);

            /*
             * Establish connection to the Database using DriverManager
             */

            connection = DriverManager
                    .getConnection(DB_URL, USERNAME, PASSWORD);

            DatabaseMetaData dbmd = connection.getMetaData();

            System.out.println("Driver Name: " + dbmd.getDriverName());
            System.out.println("Driver Version: " + dbmd.getDriverVersion());
            System.out.println("UserName: " + dbmd.getUserName());
            System.out.println("Database Product Name: "
                    + dbmd.getDatabaseProductName());
            System.out.println("Database Product Version: "
                    + dbmd.getDatabaseProductVersion());

            /*
             * Get all the table names from the world schema
             */
            System.out.println();
            System.out
                    .println("------------------Tables-----------------------------");

            String table[] =
                {
                    "TABLE"
                };
            ResultSet rs = dbmd.getTables(null, null, null, table);

            while (rs.next())
            {
                System.out.println(rs.getString(3));
            }

            rs.close();
            connection.close();
        }
        catch (SQLException se)
        {
            /*
             * Handle errors for JDBC
             */
            se.printStackTrace();
        }
        catch (ClassNotFoundException e)
        {
            /*
             * Handle errors for Class.forName
             */
            e.printStackTrace();
        }
        finally
        {
            /*
             * finally block used to close resources
             */
            try
            {
                if (stmt != null)
                {
                    stmt.close();
                }
            }
            catch (SQLException sqlException)
            {
                sqlException.printStackTrace();
            }
            try
            {
                if (connection != null)
                {
                    connection.close();
                }
            }
            catch (SQLException sqlException)
            {
                sqlException.printStackTrace();
            }
        }

    }

}

Output
Driver Name: MySQL Connector Java
Driver Version: mysql-connector-java-5.1.31 ( Revision: alexander.soklakov@oracle.com-20140520065950-groqzzbvxprqdmnz )
UserName: root@localhost
Database Product Name: MySQL
Database Product Version: 5.6.19

------------------Tables-----------------------------
city
country
countrylanguage

Environment Used 

JDK version : 1.7.0_51
Mysql Server version : 5.6.19 

To Download JDBCDatabaseMetaDataDemoApp Project Click the below link

https://sites.google.com/site/javaee4321/jdbc/JDBCDatabaseMetaDataDemoApp.zip?attredirects=0&d=1

See also:

  • Servlets Tutorial
  • All Design Patterns Links
  • JDBC Tutorial
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