How to display all the tables in Database using JDBC DatabaseMetaData api ?

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package jdbcsample;

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


/**
 *
 * @author Rishitha
 */
public class MetaDataExample {


 

    /**
     * @param args the command line arguments
     */
    public static Connection getConnection() {

        try {

            Class.forName("oracle.jdbc.driver.OracleDriver");

        } catch (ClassNotFoundException e) {

            System.out.println("Please add ojdbc6.jar in your classpath if you are using oracle,"
                    + "otherwise set the respective database driver jar file.In netbeans right click on"
                    + "libraries,click on add jar/folder and provide your jar file");

        }
        Connection connection = null;

        try {
            //XE -- Here Give your database name
            //hr -- Give Your database username
            //hr -- Give your database password
            //You have to add ojdbc.jar in your classpath

            connection = DriverManager.getConnection(
                    "jdbc:oracle:thin:@localhost:1521:XE", "hr",
                    "hr");
            System.out.println("Hurrah got connection " + connection);

        } catch (SQLException e) {

            System.out.println("Please check if database name username password are correct ?");

        }
        return connection;

    }

    public void getAllTables() throws Exception {

        Connection con = getConnection();
        DatabaseMetaData dbmd = con.getMetaData();
        if (dbmd == null) {
            throw new Exception("metadata not supported by vendor");
        }

        ResultSet tables = dbmd.getTables(null, null, null, null);
        while (tables.next()) {
            System.out.println("TableName: " + tables.getString(3) + " Schema: " + tables.getString(2));

        }
    }

    public static void main(String args[]) throws Exception {
        MetaDataExample db = new MetaDataExample();
        db.getAllTables();
    }

}