MySQL Schema Tables Column Finder

import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;

/*
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/**
 *
 * @author Zubayer
 */
public class Schemas_Tables_Columns_Finder_MySQL {

    static {
        try {
            Class.forName("com.mysql.jdbc.Driver");
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(Schemas_Tables_Columns_Finder_MySQL.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    public static Connection con;

    public static Connection getConnection() throws SQLException {
        con = DriverManager.getConnection("jdbc:mysql://localhost:3306", "root", "1234");
        return con;
    }

    public static void main(String[] args) {
        //show All Schema names
        try {
            DatabaseMetaData metadata = getConnection().getMetaData();
            ResultSet rs = metadata.getCatalogs();
            while (rs.next()) {
                System.out.println("TABLE_CAT = " + rs.getString("TABLE_CAT"));
            }
        } catch (SQLException ex) {
            ex.printStackTrace();
        }

        //show all table Names under one schema
        String[] types = {"TABLE"};
        try {
            Connection con2 = DriverManager.getConnection("jdbc:mysql://localhost:3306/fastfood", "root", "1234");
            ResultSet rs = con2.getMetaData().getTables(null, null, null, types);
            String table_name = "";
            System.out.println("\nBegin table names under specific schema");
            while (rs.next()) {
                table_name = rs.getString("TABLE_NAME");
                System.out.println("Table Name: " + table_name);

                //show all columns name nder one table
                String columnName = "";
                ResultSet rs2 = con2.getMetaData().getColumns(null, null, table_name, null);
                System.out.println("columns in " + table_name + " table");
                while(rs2.next()){
                    columnName = rs2.getString("COLUMN_NAME");
                    System.out.println("-----  " + columnName);
                }
                System.out.println();
            }
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
    }
}