Dr. Noprianto

Developer of Singkong programming language, founder and director of Singkong.dev.

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Singkong Programming Language: case-insensitive, dynamically typed, procedural, and interpreted programming language that runs on Java Virtual Machine (Java 5.0 or later). It has numbers, booleans, strings, arrays, hash maps, dates, first-class functions, built-in functions, GUI components, database connections, and other features. Singkong program can call Java methods and Singkong interpreter can be embedded and integrated into another applications. Singkong interpreter is distributed as single jar file. It comes with simple GUI editor/interactive evaluator/database tool and can be run on graphical or text user interfaces.

Singkong is based on Monkey.java (please see below) and inspired by Monkey Programming Language.

Download (4.4 MB, version 11.5, 2025-June-21): Singkong.jar, Singkong.jar.md5 (checksum), Singkong.txt (documentation, also included in Singkong.jar).

Singkong book in Bahasa Indonesia (346 pages): singkong.pdf

Screenshots: interactive, editor, database, help, macOS 11, macOS 10.15, Mac OS X 10.4, Windows 10, Windows 7, Windows XP, Windows 2000, Windows 98, Ubuntu 16.04, Ubuntu 4.10, Red Hat Linux 7.3, Chrome OS, Solaris 11.4, FreeBSD 13.0, OpenBSD 7.0, NetBSD 9.2, Debian 10 on Android.

Modules and examples: monkey.singkong, rect_array_util.singkong (bundled), csv.singkong (bundled), set_util.singkong (bundled), db_util.singkong (bundled), perkedel.singkong, components.singkong, paint.singkong (screenshot), greetings.singkong, layout.singkong, info.singkong, event.singkong, printer.singkong, editor.singkong, timer.singkong, database_simple.singkong, database.singkong, sort.singkong, draw.singkong, util.singkong (bundled), ui_util.singkong (bundled), ui_calendar.singkong (bundled), json.singkong (bundled), web.singkong (bundled), medical.singkong.

Module (Java) examples: HelloWorld.class, HelloWorldArray.class, HelloWorldArrayArray.class, HelloWorldEval.class, Dialog.class.

Singkong web application (CGI) demo: www.singkong.dev

Singkong and Java 8 bundle: if you are using Windows and Java is not installed, singkong-java8-bundle.exe (checksum) might be used to run Singkong (portable/standalone, no installation, no admin privileges required, for Windows 7 or later). Files used in building this bundle: singkong-java8-bundle.SED, singkong.c, singkong.exe.

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Perkedel: compilers, interpreters, and database systems bundle for Windows. Comes with Java Runtime Environment (AdoptOpenJDK), ECJ (Eclipse), MinGW (Code::Blocks), Tcl/Tk (compiled), Python (python.org; pip, ReportLab, web.py, PyOTP, psycopg2 (binary), et_xmlfile, jdcal, openpyxl, XlsxWriter, SQLiteBoy), CHICKEN Scheme (compiled), PostgreSQL (compiled), and Singkong. It is possible to run Perkedel in a temporary directory, or install it in perkedel directory of system drive. Perkedel requires at least 600 MB of free disk space (runs on Windows 7 or later). Perkedel is free software and is under public domain. Download (86 MB): perkedel.exe (checksum). Files used in building this bundle: perkedel-bundle.SED, perkedel-run.c, perkedel-run.exe, perkedel-start.c, perkedel-start.exe, perkedel.c, perkedel.exe (bundle), perkedel.singkong, update.singkong. Screenshots: welcome, confirmation, perkedel, examples, compile/run, Singkong, information, files, PostgreSQL. Perkedel documentation in Bahasa Indonesia (7 pages): perkedel.pdf.

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SQLiteBoy (2012-2019, archived): I develop and maintain SQLiteBoy: simple web-based management tool for SQLite database (with form, report, website, and many other features). It is written in Python 2.x and simple to distribute (sqliteboy.py).

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Monkey: My simple implementations of The Monkey Programming Language interpreters in Java, Python, and Singkong: Monkey.java, Monkey.jar, monkey.py, monkey.singkong, monkeyinterpreter.jar. Compatibility notes: monkey.py is compatible with Python 2 and Python 3, starting from Python 2.3. Monkey.java is compatible with Java 5.0 or later (developed in Java 8, with -source 1.5 -target 1.5; compilation/run test in Java 5.0, 8, and 13). monkey.singkong requires Singkong 4.8 or later. Test file for Python version: monkey_tests.py. In Monkey.java or monkey.py, it is possible to set initial environment when the interpreter is started. This allows integration with external applications. For more information, including how to use/integrate, please refer to comments in the source code.

Need to run Monkey on older systems? Monkey.java can even be compiled in Java 5.0 running on Windows 95 (which was released in 1995). Monkey.jar (released version, compiled in Java 8) can also run on Windows 95. Monkey implementation in Singkong (monkey.singkong, monkeyinterpreter.jar, GUI, text) can be run on Windows 98, using Java 5.0. Running latest or released-30-years-ago operating systems? No problem, Monkey is always there.

Screenshot of my review of Writing an interpreter in Go. (I no longer have an account there.)

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Email address: nop@noprianto.com / nopri.anto@icloud.com

Professional certification: Java (OCP)

GitHub profile: GitHub.com/nopri

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Books

Link	Title	Description
	Python & Pemrograman Linux (ISBN 979-533-887-0)	published in 2002 by Penerbit Andi Yogyakarta
	Panduan Praktis Debian GNU/Linux 3.1 (ISBN 979-523-788-8)	published in 2006 by Penerbit Dian Rakyat
	OpenOffice.org 2.0 (ISBN 979-523-738-1)	published in 2006 by Penerbit Dian Rakyat
PDF	wxWidgets	2006
PDF	Python (Dasar, Database, GTK+, CGI)	2009
PDF	Form dan Report sederhana dengan SQLiteBoy	2014
PDF	Dasar-dasar OpenERP: sisi teknikal dan contoh kasus	2014, co-author, editor
PDF	Mengenal dan Menggunakan Bahasa Pemrograman Java (ISBN: 978-602-52770-0-9)	363 pages, published in 2018 (updated 2020) by PT. Stabil Standar Sinergi
PDF	Mengenal dan Menggunakan Bahasa Pemrograman Singkong (ISBN: 978-602-52770-1-6)	346 pages, published in 2020 (updated 2025) by PT. Stabil Standar Sinergi
	Matematika Diskrit Komputasional dengan Bahasa Singkong (ISBN: 978-602-52770-2-3)	137 pages, published in 2021 by PT. Stabil Standar Sinergi, co-author, editor
PDF	Contoh dan Penjelasan Bahasa Singkong: Dasar-dasar Aplikasi GUI (ISBN: 978-602-52770-3-0)	130 pages, published in 2022 by PT. Stabil Standar Sinergi, co-author, editor
PDF	Contoh dan Penjelasan Bahasa Singkong: Mahir Bekerja dengan GUI (ISBN: 978-602-52770-4-7)	132 pages, published in 2022 by PT. Stabil Standar Sinergi, co-author, editor
PDF	Contoh dan Penjelasan Bahasa Singkong: Bekerja dengan Database Relasional (ISBN: 978-602-52770-5-4)	102 pages, published in 2022 by PT. Stabil Standar Sinergi, co-author, editor
PDF	Contoh dan Penjelasan Bahasa Singkong: Aplikasi Web dan Topik Lanjutan (ISBN: 978-602-52770-6-1)	88 pages, published in 2023 (updated 2024) by PT. Stabil Standar Sinergi, co-author, editor
PDF	Contoh Sederhana Penggunaan ArcGIS Maps SDK for JavaScript (ISBN: 978-602-52770-7-8)	50 pages, published in 2023 by PT. Stabil Standar Sinergi
PDF	Dasar-dasar Algoritma, Struktur Data, dan Pemrograman dengan Bahasa Singkong (ISBN: 978-602-52770-8-5)	144 pages, published in 2024 by PT. Stabil Standar Sinergi, co-author, editor

Papers

Link	Title	Publisher	Identifier
PDF	Simple spreadsheet test case application to test spreadsheet formula in end-user software engineering	The Eleventh 2016 International Conference on Knowledge, Information and Creativity Support Systems (KICSS 2016)	DOI
PDF	Pangsit: spreadsheet-like domain-specific programming language for data entry application development	The Eleventh 2016 International Conference on Knowledge, Information and Creativity Support Systems (KICSS 2016)
PDF	Server for SQLite Database: Multithreaded HTTP Server with Synchronized Database Access and JSON Data-Interchange	19th International Conference on Advanced Communication Technology (ICACT 2017)	DOI
PDF	Multi-platform Application User Interface Design based on Spreadsheet	The International Conference on Advanced Management and Information Technology Services 2017
PDF	Perkedel: Spreadsheet-inspired domain-specific programming language for data entry	The 2017 IEEE International Conference on Cybernetics and Computational Intelligence
PDF	Spreadsheet and comma-separated values (CSV) based domain-specific programming language for web application development	ICIC Express Letters (Volume 13, Number 12, December 2019)	DOI

Talks

More events at Singkong.dev

Link	Title	Location	Date
PDF	Differences between End-user software engineering and Professional software engineering	Bina Nusantara University	2016-May-10
PDF	Example of Object Oriented Programming In Python Programming Language	Bina Nusantara University	2016-May-10
PDF	Example of Simple Unit Testing In Python Programming Language (unittest module) Case study: SQLiteBoy	Bina Nusantara University	2016-May-19
PDF	Introduction to concurrency and multithreading	Bina Nusantara University	2016-Oct-19
PDF	You do not have to code/configure/maintain it yourself (an opinion from a tired do-it-yourself programmer)	Bina Nusantara University	2017-Feb-20
PDF	Asiknya menjadi programmer!	Bina Nusantara University	2017-Sep-28
PDF	Bahasa Pemrograman: antara kebutuhan, pilihan, dan passion atau pengalaman pahit dan manis	Bina Nusantara University	2018-Feb-19
PDF	Beberapa bahasa pemrograman untuk membangun satu aplikasi	Bina Nusantara University	2018-Feb-20
PDF	Pemodelan User Interface Multi-platform	Bina Nusantara University	2018-Nov-27
PDF	Mengenal Compiler	Bina Nusantara University	2018-Nov-27
PDF	Class Diagram dan Code Generation	Bina Nusantara University	2018-Nov-27
PDF	Kolaborasi lintas platform dan bahasa pemrograman	STT PLN	2018-Dec-10
PDF	Tantangan pengembangan dan pengelolaan software	Bina Nusantara University Universitas Multimedia Nusantara	2020-Feb-18 2020-Feb-19 2020-Feb-25
PDF	Bahasa Pemrograman Singkong: Antara Passion dan Kolaborasi Riset (updated)	Bina Nusantara University, DCS Alumni Talk Bina Nusantara University, SoCS Faculty Member Talk Bina Nusantara University, DCS Alumni Talk	2021-Mar-06 2021-July-23 2021-July-24

Workshops

More workshops and events at Singkong.dev

Link	Title	Location	Date	Page
PDF	Mengenal dan Menggunakan Bahasa Pemrograman Java	Bina Nusantara University	2018-Sep-05
PDF	Java: Object dan Class	Bina Nusantara University	2018-Sep-12
PDF	Java: Class dan Interface	Bina Nusantara University	2018-Sep-19
PDF	Java: Program to an Interface	Bina Nusantara University	2018-Sep-26	151 - 171
PDF	Java: Exception dan Error	Bina Nusantara University	2018-Oct-03	172 - 196
PDF	Java: Array dan Collection	Bina Nusantara University	2018-Oct-10	197 - 227
PDF	Java: Bekerja dengan file	Bina Nusantara University	2018-Oct-17	236 - 247
PDF	Java: Static nested class dan Inner class	Bina Nusantara University	2018-Oct-24	256 - 266
PDF	Java: Pengantar GUI dengan Swing	Bina Nusantara University	2018-Oct-31	267 - 272
PDF	Java: Contoh Komponen Swing	Bina Nusantara University	2018-Nov-07	273 - 289
PDF	Java: Pengenalan SwingWorker	Bina Nusantara University	2018-Nov-14	300 - 304
PDF	Java: Contoh penggunaan SwingWorker	Bina Nusantara University	2018-Nov-21	305 - 306
PDF	Java: Bekerja dengan sistem database relasional	Bina Nusantara University	2018-Nov-28	309 - 334
PDF	Java: Bekerja dengan sistem database relasional (lanjutan)	Bina Nusantara University	2018-Dec-05	335 - 341
PDF	Java: Tanggal/waktu dan Formatter	Bina Nusantara University	2018-Dec-12	344 - 353
PDF	Python untuk berbagai kebutuhan	Bina Nusantara University	2019-Mar-29

Stories

Link	Title
Read	Pangsit Perkedel: Tiga windu yang lalu
Read	One-time Password dan Cerita Cinta Kita
Read	Kolaborasi (a serial fiction about people working in software development industry)

System.jar

Link	Note	Registration
Download	Simple business and medical application. Free for personal use only, unsupported software, no warranty. Requires Java® 8 or later.	Registration key
medical.singkong	Using System.jar API server (medical record). Simpler than built-in medical record. Developed using Singkong Programming Language. Requires Singkong Programming Language Interpreter.	Public domain

Compiled

Cross-compiled using Ubuntu Linux 22.04, for Windows. Portable/standalone, no installation, no admin privileges required. Tutorial in Bahasa Indonesia.

Name	Description	Link
local	GLib, Pixman, SDL2, SDL2_image for compiling QEMU 7.0.0 (i686)	local.zip local.zip.md5 howto glib-cross-compile.txt
local (x86_64)	GLib, Pixman, SDL2, SDL2_image for compiling QEMU 7.0.0 (x86_64)	local-x86_64.zip local-x86_64.zip.md5 howto glib-cross-compile-x86_64.txt
QEMU 7.0.0	QEMU 7.0.0 with SDL2, SDL2_image for Windows (i686)	qemu700.7z qemu700.7z.md5 howto
QEMU 7.0.0 (x86_64)	QEMU 7.0.0 with SDL2, SDL2_image for Windows (x86_64)	qemu700-x86_64.7z qemu700-x86_64.7z.md5 howto
PostgreSQL 9.6.24	PostgreSQL 9.6.24 for Windows (i686). Included in perkedel.exe (compilers, interpreters, and database systems bundle for Windows).	postgresql.zip postgresql.zip.md5 readme howto

VM

Virtual machine images in qcow2 format.

Name	Description	Link
Alpine Linux 3.17.0 (x86)	Standard install, no NTP client, no SSH server. Installed packages: nano, bash. Root password: root. Shell for user root: bash.	alpinelinux-3.17.0.qcow2.7z alpinelinux-3.17.0.txt

Classes (2019-2023)

I am no longer a faculty member at Bina Nusantara University. My resignation was effective as of 2023-August-01.

Location	Academic Year	Subject	Classes
Bina Nusantara University, Jakarta	2019-2020 (1)	Advanced Object Oriented Programming	3
Bina Nusantara University, Jakarta	2019-2020 (1)	Operating Systems	1
Bina Nusantara University, Jakarta	2019-2020 (2)	Programming Language Concepts	3
Bina Nusantara University, Jakarta	2019-2020 (2)	Research Topics in Computer Science	1
Bina Nusantara University, Jakarta	2020-2021 (1)	Artificial Intelligence	2
Bina Nusantara University, Jakarta	2020-2021 (1)	Programming Language Concepts	2
Bina Nusantara University, Jakarta	2020-2021 (2)	Research Topics in Computer Science	2
Bina Nusantara University, Jakarta	2021-2022 (2)	Software Engineering	1
Bina Nusantara University, Jakarta	2022-2023 (1)	Operating Systems scheduler_example.singkong	4
Bina Nusantara University, Jakarta	2022-2023 (2)	Software Engineering	2

Last updated on: 2025-June-21 +07:00