/*
 * A MySQL SHOW DATABASE example using Java
 * @author mysqlcommands.com
 */

//STEP 1. Import required packages
import java.sql.*;
import java.util.List;

public class JDBCExample {
    // JDBC driver name and database URL

    static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
    static final String DB_URL = "jdbc:mysql://localhost/STUDENTS";

    //  Database credentials
    static final String USER = "username";
    static final String PASS = "password";

    public static void main(String[] args) {
        Connection conn = null;
        Statement stmt = null;
        try {
            //STEP 2: Register JDBC driver
            Class.forName("com.mysql.jdbc.Driver");

            //STEP 3: Open a connection
            System.out.println("Connecting to a selected database...");
            conn = DriverManager.getConnection(DB_URL, USER, PASS);
            System.out.println("Connected database successfully...");

            //STEP 4: Execute a query
            ResultSet rs;
            stmt = conn.createStatement();
            String sql = "SHOW DATABASES";
            stmt.executeUpdate(sql);
            rs = stmt.executeQuery(sql);
            //Print out results
            while (rs.next()) {
                System.out.println(rs.getString("TABLE_CAT"));
            }
        } catch (SQLException se) {
            //Handle errors for JDBC
            se.printStackTrace();
        } catch (Exception e) {
            //Handle errors for Class.forName
            e.printStackTrace();
        } finally {
            //finally block used to close resources
            try {
                if (stmt != null) {
                    conn.close();
                }
            } catch (SQLException se) {
            }// do nothing
            try {
                if (conn != null) {
                    conn.close();
                }
            } catch (SQLException se) {
                se.printStackTrace();
            }//end finally try
        }//end try
        System.out.println("Goodbye!");
    }//end main
}//end JDBCExample