Main.java Source code

Java tutorial

Introduction

Here is the source code for Main.java

Source

/*
Driver Loaded.
Got Connection.
SYSTEM_ALIASES
SYSTEM_ALLTYPEINFO
SYSTEM_AUTHORIZATIONS
SYSTEM_BESTROWIDENTIFIER
SYSTEM_CACHEINFO
SYSTEM_CATALOGS
SYSTEM_CHECK_COLUMN_USAGE
SYSTEM_CHECK_CONSTRAINTS
SYSTEM_CHECK_ROUTINE_USAGE
SYSTEM_CHECK_TABLE_USAGE
SYSTEM_CLASSPRIVILEGES
SYSTEM_COLLATIONS
SYSTEM_COLUMNPRIVILEGES
SYSTEM_COLUMNS
SYSTEM_CROSSREFERENCE
SYSTEM_INDEXINFO
SYSTEM_PRIMARYKEYS
SYSTEM_PROCEDURECOLUMNS
SYSTEM_PROCEDURES
SYSTEM_PROPERTIES
SYSTEM_ROLE_AUTHORIZATION_DESCRIPTORS
SYSTEM_SCHEMAS
SYSTEM_SCHEMATA
SYSTEM_SEQUENCES
SYSTEM_SESSIONINFO
SYSTEM_SESSIONS
SYSTEM_SUPERTABLES
SYSTEM_SUPERTYPES
SYSTEM_TABLEPRIVILEGES
SYSTEM_TABLES
SYSTEM_TABLETYPES
SYSTEM_TABLE_CONSTRAINTS
SYSTEM_TEXTTABLES
SYSTEM_TRIGGERCOLUMNS
SYSTEM_TRIGGERS
SYSTEM_TYPEINFO
SYSTEM_UDTATTRIBUTES
SYSTEM_UDTS
SYSTEM_USAGE_PRIVILEGES
SYSTEM_USERS
SYSTEM_VERSIONCOLUMNS
SYSTEM_VIEWS
SYSTEM_VIEW_COLUMN_USAGE
SYSTEM_VIEW_ROUTINE_USAGE
SYSTEM_VIEW_TABLE_USAGE 
 * */
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

public class Main {
    public static void main(String[] args) throws Exception {
        DatabaseMetaData md = conn.getMetaData();
        ResultSet rs = md.getTables(null, null, "%", null);
        while (rs.next()) {
            System.out.println(rs.getString(3));
        }
    }

    static Connection conn;

    static Statement st;

    static {
        try {
            // Step 1: Load the JDBC driver.
            Class.forName("org.hsqldb.jdbcDriver");
            System.out.println("Driver Loaded.");
            // Step 2: Establish the connection to the database.
            String url = "jdbc:hsqldb:data/tutorial";

            conn = DriverManager.getConnection(url, "sa", "");
            System.out.println("Got Connection.");

            st = conn.createStatement();
        } catch (Exception e) {
            System.err.println("Got an exception! ");
            e.printStackTrace();
            System.exit(0);
        }
    }
}