Main.java Source code

Introduction

Here is the source code for Main.java

Source

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

public class Main {
    private static final String DRIVER = "com.mysql.jdbc.Driver";

    private static final String URL = "jdbc:mysql://localhost/testdb";

    private static final String USERNAME = "root";

    private static final String PASSWORD = "";

    public static void main(String[] args) throws Exception {
        Class.forName(DRIVER);
        Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);

        DatabaseMetaData metadata = connection.getMetaData();
        ResultSet resultSet = metadata.getColumns(null, null, "users", null);
        while (resultSet.next()) {
            String name = resultSet.getString("COLUMN_NAME");
            String type = resultSet.getString("TYPE_NAME");
            int size = resultSet.getInt("COLUMN_SIZE");

            System.out.println("Column name: [" + name + "]; type: [" + type + "]; size: [" + size + "]");
        }
        connection.close();
    }
}