Lecture notes

Martin Goik

Stuttgart Media University / MI

	Available formats:	Webhelp (this document) Zip archive for offline usage EPUB
	Hosted at:	HdM Stuttgart (primary site) medieninformatik.cloud (alternate site)
	Source code provided at `https://gitlab.mi.hdm-stuttgart.de/goik/GoikLectures`
	Published under the terms of the Creative Commons Attribution 4.0 International Public License.

Table of Contents

113105 Software development 1

Getting started

Lecture related resources

Using the exercises

Related resources

Coached exercises

Using plain Java™

Using Intellij IDEA

“Hello, World” and friends.
Simple calculations
A conditional
A loop

Language Fundamentals

Integer, ASCII and Unicode

Primitive types

Arithmetic limitations

Conversions

Operators and expressions

Arithmetic and logical operators
Assignment operators
Unary operators
Operator precedence

The if conditional statement

if-then-else
Using else if

The switch statement

while
do ... while
for

Logic related external exercises

Using automated tests.

Objects and Classes

Static methods

Working with objects

Object methods

Encapsulation and access control
Getter and setter methods
Signatures
Method overloading
Constructors
Scopes

Class members and methods

A mathematical table.
Interest calculations
Programmer's favourite expression
Lotteries revisited
The greatest common divisor and the common multiple

Maven project dependencies

Maven command line usage
Intellij IDEA on top of Maven

Building a library of mathematical functions.

Maximum and absolute value
Factorial, the direct way
Factorial, the recursive way
Binomials, the recursive way
Implementing exponentials.
Adding sine
Strange things happen

Unit testing

Tests and implementation
Improving the algorithm
Parameterized testing
Helpful Junit methods
Technical details
Example: A class representing fractions

Value types and reference types

Method calls, the details

Enumerations (enum)

Enumeration by integer representation
Enumeration by dedicated class
Defining a private constructor
enum replacing class

Working with git locally.
Shared development with centralized remote.
Conflicts

Core Classes

Using class Math
String exercises
Analyzing file pathnames

Reconsidering System.out.format().

java.util.Arrays helpers

Extending arrays

Storing integer values

Understanding static public int main(String[] args)

Multi-dimensional arrays

Tic-tac-toe

Tic-tac-toe using a two-dimensional array
Changing the game's internal representation
Tic-tac-toe, Computer vs. human

Providing statistical data

Prime numbers revisited

A simple algorithm
Improving performance

The median of a given sample.

Plotting functions

Inheritance

Overriding equals() and hashCode()

Overriding toString()

final methods

Abstract methods

Geometry classes reconsidered

protected access

final classes

The instanceof operator

The @Override annotation.

Runtime polymorphism

Error Handling

Checked vs unchecked exceptions
Exceptions and Junit
Variants
Class java.lang.Exception

Working with Numbers

Boxing and unboxing
Number Parsing
Number Formatting
Working with Money
Generating Random Numbers

interface definitions and abstract Classes

Interfaces and sorting
A nonsense generator
An interface based plotter

Application deployment I

Preparations
Exercises
Part II, Exercises

Reading character streams

Preparations
Exercises

Collections

Preparations

Collections I, Exercises

A Set of Strings
A List of Strings
Defining a Coordinate class
A Set of Coordinate instances

Collections I, Exercises

Getting a Set of strings from a text file
Result string ordering
Sorting strings in an unusual way
Result string ordering

Collections III, Exercises

Collections IV, Exercises

Maps 1, Preparations

Towns and country names

Creating an overview of grades

Examination bonus point projects

Weather forecast
Reverse Polish notation (RPN) calculator
Currency converter, Summer 2017
An address database, Winter 2016
Poor man's UNIX grep, Summer 2016
Project Euler's sieve, Winter 2015

Exercising past examinations

Starting an exam
Implementing the project skeleton
Finish the exam

Examination hints

Past Software Development 1 examinations

SD1 examination summer 2025
SD1 examination winter 2024
SD1 examination summer 2024
SD1 examination winter 2023
SD1 examination summer 2023
Sd1 examination winter 2022
SD1 examination winter 2021
SD1 examination summer 2021
SD1 examination winter 2020/1
SD1 examination winter 2020/2
SD1 examination summer 2020
SD1 examination winter 2019
SD1 examination summer 2019
SE1 Klausur Winter 2018
SE1 Klausur Sommer 2018
SE1 Klausur Winter 2017
SD1 Klausur 2017
SE1 Exam winter 2015
SE1 Klausur Sommer 2015
SE1 Klausur Winter 2014

Past Software Development 1 exam preparing tests

Test 01
Test 02
Test 03
Test 04

Working with git

Apache Maven

The project object model pom.xml
Plugins
Dependencies
Lifecycle, phases and goals

List of Exercises

113492 Technical Documentation

Software independent considerations

General remarks

Common building blocks

Block level elements

Target formats
Selected elements
Schematron
Customizing
Assemblies
Styling the editor application

Modular documents

RelaxNG Schema

Transforming documents

Target format HTML
Target format print

TeX / LaTeX
Docbook

LaTeX hello,... world
Important elements
Macro
A complete document

Project proposals

Building a reveal.js editor
Authoring journey descriptions
Gitlab pages integration of Docbook
Codingbat reloaded
XML based exercise compilations
Past projects

List of Exercises

113473 Database and application development

Database features

Selected database products overview

Installation
Features
Exercises

Installation
Features
High performance sharding cluster
Exercises

JDBC: Accessing Relational Data

Persistence in Object Oriented languages

Introduction to JDBC™

Write access, principles
Write access, coding!
JDBC™ and security
Read Access
Dynamically load a JDBC™ driver
Handling surrogate keys
Transactions

Configuring a Maven based Eclipse Java™ project with Hibernate

Creating a JPA configuration

A round trip working with objects

Persisting objects
Loading Objects by primary key
Loading objects by queries
Criteria based queries

Mapping single entities and database tables

Transient properties
Properties and NULL values
Defining keys
Composed keys
Indexes (non-unique)
Renaming tables and attributes
Changing the default type mapping
Object states and transitions
XML to JPA using JAXB

Inheritance

Single table per class hierarchy
Joined subclasses
Table per concrete class

Mapping related Components and entities

Primary keys revisited
Entity and value types
Mapping components

orphanRemoval vs. CascadeType.DELETE

Project ideas

Extending UNIX grep to databases
Database copy tool
Database schema evolution tool

List of Exercises

113475 Software defined Infrastructure

Manual server management

Documentation guidelines

Hetzner cloud administration GUI

Public / private key pair
Pass phrases and ssh agent
Agent forwarding
Port forwarding
X11 forwarding
Network data transfer using scp, rsync and ssh

Prerequisites

Ubuntu / Debian Package management

Prerequisites

Cloud provider

Working with Terraform
Cloud-init
Terraform modules
Volumes
Terraform states
Exercises related DNS server
Terraform loops
Terraform and DNS
Generating web SSL certificates
Private networks

Preliminaries
Exercises

Recommended Preparations
Exercises

Apache web server

Preliminaries
Exercises

Exercises

Network file systems served by Samba

Prerequisites
Samba server installation

Recommended Preparations
Exercises

Introduction
Exercises

Functional checks
SNMP based checks
ssh based checks

List of Exercises

Common topics

Project documentation

Bibliographic links

List of Figures

1. Temporary PC pool workaround
2. How much time to invest?
3. Your biggest enemies
4. German humour
5. 4 most imperative study objectives
6. Tuition attendance and exam results summer 2025
7. Moodle and tuition groups
8. Recommended reading resources I
9. Recommended reading resources II
10. Online tutorials
11. Unix and the terminal
12. Online programming, automated feedback
13. Online programming I
14. Online programming II
15. Choosing the SD1 bwLehrpool VM
16. Intellij IDEA IDE
17. Live lecture additions
18. Virtualbox / VMware player based virtual Linux image
19. Virtualbox™ settings
20. Embedded exercises
21. Using the exercises
22. HdM mail server
23. Configure MI VPN client access
24. MI Cloud server
25. MI File server
26. MI Git versioning server
27. Coached exercises
28. Bonus points
29. Seminar rules and bonus points
30. Presenting exercise solutions
31. Edit - compile - execute
32. Editing Java™ files
33. Defining class HelloWorld
34. Compiling Java™ file
35. Command line Java™ file compilation
36. Java byte code file HelloWorld.class
37. Source code vs. bytecode
38. Executing byte code file HelloWorld.class
39. Command line byte code file HelloWorld.class execution
40. Intellij IDEA requires a JDK™
41. Intellij IDEA installation
42. Idea »Ultimate« license types
43. Alternative: Using the HdM license server
44. Creating a new Java project
45. Getting first Java™ impressions
46. Manual calculation: Abacus
47. Mechanical calculation: Cash register
48. Electromechanical calculation: Zuse Z3
49. Vacuum Tube: Eniac
50. Transistor: Microprocessor ICs
51. Z80 8-bit data bus
52. Progress in hardware 1
53. Progress in hardware 2
54. Simple facts:
55. Unsigned 3 bit integer representation
56. Binary system addition
57. 3 bit two-complement representation
58. 3 bit two complement rationale: “Usual” addition
59. Signed 8 bit integer binary representation
60. 7-bit ASCII
61. 7-bit ASCII with even parity bit
62. Western European characters: ISO Latin 1 encoding
63. Unicode UTF-8 samples
64. Java types
65. Java signed integer primitive types
66. Four int literal representations of decimal 29
67. Java unsigned integer, floating point and boolean primitive types
68. Variables: Handles to memory
69. Local variable declaration
70. Declare, assign and use
71. Combining declaration and initialization
72. Compound declarations
73. Identifier in Java™:
74. Identifier name examples:
75. Java™ keywords.
76. Variable naming conventions
77. Constant variables
78. Case sensitivity
79. Define before use
80. Type safety
81. Compile time analysis
82. Type inference (JDK™ 10)
83. Forcing conversions by cast
84. Watch out!
85. Casting long to int
86. Casting double to short
87. «C» programming language “liberal” assignment policy:
88. Consequences
89. From the report
90. Dynamic typing in PERL
91. Dynamic typing in PERL, part 2
92. Using final
93. Reference type examples
94. float and double
95. Four ways representing 35
96. Choose your output representation
97. Know your limits!
98. Literal examples
99. int literals
100. Just kidding ...
101. Strange things I
102. Strange things II
103. Limited floating point arithmetic precision
104. Nearest float to 0.1F
105. FloatConverter
106. Widening from byte to short
107. Narrowing from int literal to char variable
108. A widening «ladder»
109. A narrowing «ladder»
110. The binary plus operator
111. Binary operator output type
112. Detecting arithmetic overflow (Java 8+)
113. Dividing by zero
114. Generic binary operator
115. The modulus operator %
116. Binary operator type examples
117. No binary + operator yielding byte
118. int expression assignment
119. Constant expression assignment
120. The logical “and” operator &
121. The += operator
122. The &= operator
123. Arithmetic assignment operators
124. Logical assignment operators
125. Increment operator ++
126. Different range behaviour!
127. Cast required
128. Prefix and postfix notation
129. Operator examples
130. Operator precedence examples
131. Operator precedence references
132. Java™ comment flavors
133. Inline comments
134. Javadoc™ comments
135. Statements: General syntax
136. Statement examples: Declaring and assigning variables
137. Expression vs. statement
138. Multiple statements per line
139. Debugging multiple statements per line
140. Method local variable scope
141. Nested blocks and variable scopes
142. Block purposes
143. Principle of swapping two variables
144. Swapping two variables
145. Swapping two variables using a block
146. Conditional block execution
147. if syntax
148. if ... else
149. if ... else syntax
150. Best practices comparing for equality
151. Single statement branches
152. Nested if ... else
153. Enhanced readability: if ... else if ... else
154. if ... else if ... else syntax
155. User input recipe
156. Using a Scanner class collecting user input.
157. Converting numbers to day's names
158. Numbers to day's names: The hard way
159. Better: Using switch
160. switch Syntax
161. Switching on strings
162. switch expressions
163. Assigning switch expressions
164. Allowed types for switch statements
165. Allowed labels
166. Why loops?
167. Number of repetitions given by user input
168. A while loop
169. Combining increment and termination condition
170. while syntax
171. Empty while body
172. A do ... while loop
173. do ... while syntax
174. Frequent usage of while
175. Replacing while(...) by for(...;...;...)
176. for syntax
177. for variable scope
178. for variable scope equivalence
179. for vs. while relationship
180. Nested loops 1
181. Nested loops 2
182. Better readability: row and column in favour of i and j
183. Calculating values
184. Response to coding errors
185. Unit test concept
186. alarmClock(...) with errors
187. Testing alarmClock(...)
188. Testing alarmClock(...) details
189. A method adding two values
190. Syntax of method definition
191. The static modifier matters!
192. Documentation: Javadoc™ is your friend!
193. Separating usage and definition
194. Instances of a Class
195. General class structure
196. What's a class anyway?
197. Rectangle objects
198. A class describing rectangles
199. Rectangle class and instances
200. Generated diagrams
201. The new operator: Creating rectangle instances
202. Syntax creating instances
203. Assigning attribute values to class instances
204. Instance memory representation
205. References and null
206. Checking for object presence
207. Why packages ?
208. Rules and conventions
209. Fully qualified class name vs. import
210. Don't be too lazy!
211. Special: Classes in package java.lang
212. Class, package and file system
213. Source hierarchy view
214. Object methods
215. Get a rectangle's area
216. Get a rectangle area method coding
217. Scaling a rectangle
218. Scaling method implementation
219. Scaling method signature
220. Using the scale(...) method
221. Method definition syntax
222. A rectangle's perimeter
223. getPerimeter() method implementation
224. Using Rectangle.getPerimeter()
225. Access control: Overall objectives
226. Example: Two ways implementing a day's time
227. private modifier access violation
228. Absent access modifier, access violation
229. Access rules
230. “Tips on Choosing an Access Level”
231. Direct access vs. setter method
232. Why adding setter methods?
233. Implementation change: Minutes only, no hours
234. Defining type signatures
235. Type signature examples
236. Defining method signatures
237. Method signature examples: Ignore return type!
238. Method overloading: Same name, different signature
239. Overloading, alternate names
240. No overloading in »C«
241. »C« requires unique function names
242. No distinction on return type
243. Method signatures rationale
244. Method signatures rationale
245. Example: System.out.print(...)
246. Creating and initializing rectangles
247. Defining a constructor
248. Constructor syntax
249. Constructors
250. Multiple overloaded constructors
251. Constructor calls within constructor
252. Instances by overloaded constructors
253. No constructor vs. default constructor
254. Non - default constructor, but no default constructor
255. Employee example package hierarchy
256. Circle and variable scopes
257. Documenting classes and methods
258. Generated Javadoc
259. Refactoring «r» ⇒ «radius»
260. Scope assignment problem
261. this overriding method scope
262. Why do we require an instance?
263. Solution: Replace instance method by class method using static
264. Club membership objectives
265. Step 1: Implementing club member names.
266. Showing membership info.
267. Step 2: Adding membership numbers.
268. Showing membership numbers.
269. Member creation steps
270. Accessing the club's overall member count?
271. Accessing the club's member count
272. Syntax accessing class members
273. static / non-static wrap up
274. Finally understanding System.out.print(ln)
275. Newton's letter to Robert Hooke
276. Application execution prerequisites
277. Why Maven project management?
278. Example: Creating PDF using iText7
279. Maven iText library pom.xml definition
280. Itext transitive dependencies
281. Class location in iText library
282. Class location in iText library
283. Maven repositories
284. Maven archetypes
285. Project «lottery» depending on «common»
286. Providing project «common»
287. Publish project «Common»'s library
288. Content of archive common-1.0.jar
289. Consuming project «lottery»
290. External libraries view
291. Using Helper.factorial(...) computing $(\begin{matrix} n \\ k \end{matrix}) = \frac{n!}{k! (n - k)!}$
292. Maven artifact dependency.
293. Using the MI Sd1 project template
294. CLI example
295. Supplementary MI Maven archetypes
296. CLI testing mi-maven-archetype-quickstart
297. CLI archetype details
298. Generated project layout
299. Maven compile
300. Compilation file view
301. Execution
302. Maven package
303. Executing Java™ archive first-0.9.jar
304. Maven javadoc:javadoc
305. Maven clean
306. Intellij IDEA Maven support
307. Adding MI Maven server
308. New MI archetype project
309. pom.xml content changes
310. Intellij IDEA generating Javadoc™
311. Pascal's triangle representing binomial coefficients.
312. An implementation sketch for the exponential
313. Comparing exponential and approximation
314. Comparing sin(x) and its approximation.
315. Recommended reading
316. Test categories
317. Example: Computing prime numbers
318. Unit test principle
319. Test driven development
320. Steps in Unit Testing
321. Step 1 + 2: Specify method, write skeleton
322. Execution yet being flawed
323. Sample test data
324. Step 3: Junit based specification test
325. Junit skeleton test result (Maven CLI)
326. Junit skeleton test result (IDE)
327. Step 3: Providing more prime tests
328. Step 3: Prime mass testing
329. Step 4: Implement skeleton
330. Step 5: Testing our first implementation
331. Implementation observation
332. Changing the implementation
333. Regression test
334. Systematic error debugging
335. Error correction in detail
336. CSV parameter testing
337. CSV parameter file based testing
338. Available comparison methods
339. Caution comparing float / double !!
340. Weird arithmetics?
341. Limited representation precision
342. Solving the issue
343. The @Test annotation
344. The Assert class
345. Importing dependencies
346. Dependency archive content
347. Value vs. reference type variables
348. Different behaviour!
349. Value variable Details
350. Reference variable Details
351. Only «call-by-value» in Java™
352. «call-by-value» details
353. «call-by-reference» for objects?
354. «call-by-reference» details
355. No «call-by-reference» in Java™!
356. No «call-by-reference» details
357. C++ reference operator “&”
358. C++ offers «call-by-reference» by virtue of “&”
359. C++ «call-by-reference» details
360. Method calling
361. Three variable scopes
362. Scope lifetimes
363. Two runtime memory categories
364. Stack: Four operations
365. Example: Storing integer values
366. Method calling
367. Call stack trace
368. IDE debugger
369. Motivation
370. Weekly offered lectures
371. Weekly offered lectures by simple numbers
372. Weekdays int representation
373. Weekly offered lectures using constants
374. Converting index values to day names
375. Providing lecture info
376. Sample lectures
377. Pitfall #1 of 2: Bogus day index value
378. Pitfall #2 of 2: Method argument order mismatch
379. Enumeration by class instances
380. Class instance per enumeration value
381. switch no longer works
382. Re-writing getPrice()
383. Pitfall: Creating an undesired instance
384. Define a private Day constructor
385. Preventing undesired Day instance creation
386. Adding a day name attribute
387. enum Day replacing public class Day
388. switch statements working again
389. enum constructor being implicitly private
390. From https://www.urbandictionary.com
391. Useful links
392. Initialize git project
393. Configure author related data.
394. Adding resources to project index and staging area
395. Committing change set
396. Project versioning status
397. Adding a comment
398. git diff tracing changes
399. Reverting individual file.
400. Compiling, Math.class and Print.class.
401. Math.class, Print.class and versioning.
402. Show project's log
403. Switch to an older revision ...
404. ... and forth to current master's HEAD
405. Centralized remote repository
406. Step 1: Create remote repository
407. Step 2: Retrieve remote repository address
408. Step 2: Connect to remote repository
409. Step 3: Push local to remote
410. Step 3: Pull remote to local
411. Alternative: Create remote, then clone
412. Conflicting changes
413. Commit schedule
414. User B: git push fails
415. User B: git pull fails as well
416. Merge conflict details
417. Struggling for resolution
418. Merging Print.java manually
419. Commit and push merge
420. Openjdk source code repository
421. Java Visualizer
422. Superclass Object
423. String literals
424. OpenJDK String implementation
425. String copy constructor
426. Copy constructor and heap
427. Operator == and equals()
428. Remarks == vs. equals()
429. Operator == and equals() implications
430. equals() is being defined within respective class!
431. Math.sin(double x)
432. Motivating Arrays
433. Per member repeating tasks
434. Example: int array of primes
435. Loop prime values
436. Mind the limit!
437. Safer: Using length
438. Even better: “for-each” style loop
439. Mind the limit, part two
440. Primitive data one step initialization
441. Reference data one step initialization
442. Array
443. Two syntax variants
444. Array instances are special!
445. Array creation details
446. Array parameter passing
447. Parameter passing details
448. Value and reference types
449. Arrays.toString(...) and Arrays.sort(...)
450. Arrays.binarySearch(...)
451. Arrays.fill(...)
452. Arrays.copyOfRange(...)
453. Arrays.equals(...)
454. Lack of extendability
455. Extending an array
456. Extension result
457. Using Arrays.copyOf()
458. public static void main(String[] args)
459. Intellij IDEA run configuration
460. Intellij IDEA run configuration
461. Creating executable jar
462. Two-dimensional arrays
463. Behind the scenes
464. Memory allocation
465. Static array initialization
466. Static array initialization, variable lengths
467. Two Tic-tac-toe players fighting each other.
468. Two Tic-tac-toe players fighting each other.
469. Guess who's inheriting the money
470. Biology and inheritance
471. Duplicate code
472. Idea: Centralize common code
473. Common and specific properties
474. Basic shape inheritance
475. Inheritance
476. Implementing Shape hierarchy
477. Creating instances
478. Shape constructor
479. Creating Rectangle instances
480. Rectangle constructor
481. Shape.equals()
482. Rectangle.equals()
483. Printing a Shape's info
484. Overwriting toString()
485. Shape extending Object
486. Logging Rectangle instances
487. Override toString() in class Rectangle.
488. Rectangle extending Shape
489. Implementing Circle.toString()
490. Shape and toString()
491. Moving Shape instances
492. Implementing Shape movements
493. Fools are everywhere!
494. Solution: final prevents overriding
495. Calculating a shape's area
496. Desired: Polymorphic getArea() call
497. Problems:
498. abstract method getArea()
499. abstract method getArea()
500. What's a “shape” anyway?
501. No instances of abstract classes.
502. Mandatory getArea() implementation.
503. Facts about abstract fields, methods and classes.
504. Moving shapes
505. protected access
506. final classes
507. final classes rationale
508. “Defeating” polymorphism
509. Defining equals(...): Expectations
510. Defining equals(...) of Shape instances
511. Comparing center coordinates
512. Implementing Rectangle.equals()
513. Implementing Circle.equals()
514. Testing equality of Shape objects
515. Overriding Object.toString()
516. @Override: Easy compile time error detection
517. Meta info of an instance
518. Getting instance meta info
519. Implementing getArea()
520. Polymorphic getArea() call
521. Runtime polymorphic dispatch
522. Compile- and runtime errors
523. NullPointerException (NPE for short)
524. NullPointerException is a class
525. Throwing an exception
526. Catching an exception by try {...} catch {...}
527. try {...} catch {...} syntax
528. Checked and unchecked exceptions
529. Checked and unchecked exceptions
530. Expected exceptions in Junit
531. Just finally, no catch
532. try-with-resources (Java™ 7)
533. Scanner implementing AutoCloseable
534. No close() method in e.g. class String
535. Method printStackTrace()
536. Ascending inheritance ordering
537. Wrong ordering
538. Implementing convert
539. Problem: “Silent” errors
540. Step 1: Find exception base class
541. Step 2: Derive CardinalException
542. Step 3: Throwing CardinalException
543. Step 4: Unit test throwing CardinalException
544. Stack of integer values
545. Java™ collection features
546. Behind the scenes
547. Boxing and unboxing
548. Boxing syntax comparison
549. Parsing Integer user input
550. Parsing binary representation
551. Standard parse methods
552. Excerpt from java.util.Locale
553. Locale properties
554. Get a NumberFormat instance
555. Create a custom formatter
556. Polymorphic number parsing
557. Limited float precision
558. Limited double precision
559. Using BigDecimal
560. Chaining BigDecimal operations
561. BigDecimal features
562. Using static double random()
563. Seeding a pseudo random generator
564. Interface examples
565. Observations
566. Writing strings to file
567. Using Text2File
568. Possible Text2File errors:
569. Employ “try-with-resources”
570. interface syntax
571. The AutoCloseable promise
572. abstract class replacement
573. interface vs. abstract class
574. interface MyAutoCloseable
575. Extending MyAutoCloseable to flush
576. Using MyFlushable
577. Inheritance hierarchy
578. Upcoming topics
579. Interfaces implemented by class String
580. The Comparable interface
581. class String and Comparable
582. Comparison examples
583. Ascending and descending names
584. API requirements
585. Sorting strings alphabetically
586. Situation dependent sorting criteria
587. Implementing flexible sorting
588. Comparator in action
589. Case insensitive sort
590. Sort descending by lambda expression
591. What's the use of hashing anyway?
592. Account hierarchy
593. Students and lecturers
594. An array of strings
595. An associative array describing month lengths
596. Grouping towns by country names
597. Collaborative efforts
598. Project rules
599. Internal code documentation
600. Internal code documentation hints
601. Javadoc™ mismatches
602. (Automated) tests
603. Deployment and execution
604. Marking criteria
605. Sample forecast session
606. Sample forecast invocation
607. Underlying data provider
608. cities.list.json.gz providing cities
609. ma/Copy URL result to file
610. Parse city data
611. Parse weather data
612. Requirements
613. Logging
614. Minimalist token scanner
615. Scanner output -1.34 0.34 + sqrt
616. Adding error detection
617. Error message
618. Running the currency converter terminal application.
619. Exam training by Guacamole
620. Environment hints:
621. Preparing an examination
622. Generating Javadoc™.
623. Programming hints
624. The implement - test - implement cycle
625. Finishing the exam
626. Personal examination cheat sheets
627. Unit tests in examinations
628. Example interface definition
629. Corresponding test
630. Don't cheat!
631. Unit tests strategy in examinations
632. Steps creating a new project
633. Creating a project at MI gitlab
634. Cloning a git project
635. Enter project folder, add Readme.md
636. Committing change set
637. Push to upstream repository
638. Inserting a Maven project
639. git status 1
640. Adding Maven files to repository
641. git status 2
642. Commit Maven project files
643. git status 3
644. Push to upstream again
645. Reverting changes
646. Pull changes from upstream
647. Maven: Recommended reading
648. What is Maven anyway?
649. Maven: Facts and benefits
650. Convention Over Configuration
651. Maven project layout
652. The project object model file
653. pom.xml characteristics
654. pom.xml vs. Makefile
655. «Hello, world» pom.xml
656. Executing «compile» phase
657. Examining the Java™ version culprit
658. Resolving encoding / Java™ version issues
659. POM inheritance
660. The Super POM
661. pom-4.0.0.xml content
662. Favour https in ~/.m2/settings.xml
663. Resolving to effective pom.xml
664. Plugin architecture
665. Sample plugins
666. Example: The maven-javadoc-plugin
667. Adding test capabilities
668. Dependency listing
669. Absence of hamcrest in pom.xml
670. ~/.m2/repository/junit/junit/4.12/junit-4.12.pom
671. Transitive dependencies
672. Oblivious to test implementation: TestNG
673. Phases
674. Maven lifecyles and phases
675. hooking into phase
676. Why XML based publishing?
677. XML features
678. Editors, compositors, designers ...
679. Promises in publishing
680. Publishing reality
681. Single source publishing
682. Separating Structure, content and format
683. Separating concerns
684. Content
685. Hierarchical structure
686. Hierarchical structure, XML source
687. Presentation
688. Example 1: HTML 5, pure structure
689. Example 2: TeX / LaTeX
690. Separating structure and presentation(s)
691. Sample technical document
692. Observations
693. Pros and cons of TeX / LaTeX
694. Tools of the trade
695. Inline formatting
696. Paragraphs
697. Lists
698. Tables
699. Images
700. Mathematical formulas
701. Cross references
702. Document sectioning
703. Modular document components
704. What is Docbook?
705. Authoring and publishing
706. Document representation
707. Software centric schema
708. Document targets
709. Docbook components
710. Target format overview
711. Tooling / Software
712. Different schema languages
713. Plain HTML
714. Web help
715. Eclipse help
716. Printed output
717. Paragraph
718. Itemized list
719. Ordered list
720. Glossary list
721. Nested lists
722. Reference
723. A table
724. A MathML equation
725. A TeX equation
726. Reference
727. Figure
728. Image map + calloutlist
729. Video
730. A warning
731. Reference
732. Recursive sections
733. Non-recursive sections
734. Two different link flavours
735. Choosing a top level element
736. Allowed 5.1 top level elements
737. Schematron on top of RelaxNG
738. Example: xml:id and permalink
739. Using Display #Anchors
740. Considerations author based permalink
741. Schematron permalink rule
742. HTML customization overview
743. Target specific configuration
744. Link stability
745. use.id.as.filename = 1
746. Parameter: use.id.as.filename
747. Customization parameter ulink.target
748. callout.unicode / callout.graphics
749. Links
750. Hooking into XSL
751. Categories
752. Example: videos
753. Links
754. Customize by CSS
755. Example CSS modifications
756. Styling the editor
757. Motivating modular documents
758. Monolithic document problems
759. Document decomposition
760. A monolithic document
761. Decomposing documents
762. XML grammar defining languages
763. Address list schema
764. Format conversion problem
765. XSL template rules
766. Example: Formatting <title> elements
767. Basic FO introduction
768. XMLMind Editor
769. Oxygenxml Author
770. Vendor links
771. Inverse editing
772. Document representation
773. Components
774. BibTeX
775. Makeindex example
776. Makeindex work flow
777. Extension example: MusiXTeX
778. Flavours
779. Components
780. Editors
781. reveal.js authoring tools: Principle
782. reveal.js features #1 of 3
783. reveal.js features #2 of 3
784. reveal.js features #3 of 3
785. reveal.js observations
786. Authoring tool project goals
787. Principle
788. Required / to be acquired skills
789. Principle
790. Codingbat: Desired features
791. Desired features
792. CRUD operation
793. Query
794. Schema
795. Procedures / triggers
796. Transactions / recovery
797. Data access control
798. API support
799. Installing Docker
800. Why LDAP?
801. LDAP introduction
802. Running a Docker container
803. Using docker-compose
804. Installing Apache Directory Studio
805. Administrator access to your DIT
806. Administrator access to your server's data tree
807. Administrator access to your server's configuration
808. Terminology
809. Adding an entry
810. Adding a new attribute
811. Replacing an attribute value
812. Deleting an attribute entirely
813. Multi valued attributes
814. Set semantics of multivalued attributes
815. Deleting selected attribute values
816. Query scope
817. Query filter
818. Schema support
819. Implementations
820. Implementations
821. Exercises
822. Why MongoDB?
823. Running a Docker container
824. Using docker-compose
825. Manual user creation
826. Log in as user explorer
827. Using IntelliJ
828. Idea show all databases
829. Terminology / Hierarchy
830. Adding a document
831. Updating attributes
832. Deleting a document
833. Deleting multiple documents
834. Multi valued attributes
835. Set semantics of multivalued attributes
836. Deleting selected attribute values
837. Deleting an attribute
838. Query filter
839. Schema validation support
840. Violating required field
841. Schema types
842. Enforcing unique keys
843. On the downside
844. Implementations
845. Implementations
846. Sharding rationale
847. Sharding rationale
848. Exercises
849. Prerequisite knowledge
850. Persistence [Bauer2015]
851. Java™ transient instances
852. RDBMS persistent records
853. Persisting transient User instances
854. Observations
855. Networking between clients and database server
856. JDBC™ features
857. JDBC™ in a three-tier application
858. JDBC™ connecting application server and database.
859. JDBC™ connection parameter
860. Components of a JDBC™ URL
861. IETF Uniform Resource Identifier
862. URL examples
863. Sub protocol examples
864. No standard port assignments ...
865. ... but Postgresql made it into Linux
866. JDBC™ architecture
867. DriverManager: Bootstrapping connections
868. Example: Mysql connection implementation
869. Driver libraries
870. Driver libraries by Maven
871. Driver unavailable
872. Connection interface
873. Statement interface
874. JDBC™ instances and relationships.
875. Important Connection methods
876. Important Statement methods
877. JDBC™ and threading.
878. JDBC™ connection pooling
879. pom.xml driver runtime scope
880. Person table
881. Objective: insert person record
882. JDBC™ backed data insert
883. Result
884. Two JDBC™ configurations
885. Figure 882, “JDBC™ backed data insert ” deficiencies
886. Why properties?
887. message.properties string externalization
888. Properties code sketch
889. Intellij IDEA settings, preconditions
890. Database related unit test phases
891. Implementing unit tests
892. Spring is your friend
893. Project layout
894. Closing connections
895. Employ AutoCloseable
896. Sniffing a JDBC™ connection by an intruder.
897. Setting up Wireshark
898. Capturing results
899. Mysql™ security
900. Mysql™ security
901. Assembling SQL
902. SQL injection principle
903. Preventing traffic tickets
904. Trouble at school
905. SQL injection impact
906. SQL injection relevance, [Clarke2009]
907. Handling injection attacks, part 1
908. Handling injection attacks, part 2
909. Input filtering
910. Validating user input prior to dynamically composing SQL statements.
911. Error message being presented to the user.
912. SQL statements in Java™ applications get parsed at the database server
913. Two questions
914. Addressing performance
915. Addressing performance mitigation
916. Restating the SQL injection problem
917. Solution: Use java.sql.PreparedStatement
918. PreparedStatement principle.
919. Three phases using parameterized queries
920. PreparedStatement example
921. Injection attempt example
922. Limitation: No dynamic table support!
923. JDBC™ read and write
924. Server / client object's life cycle
925. JDBC™ record container
926. Reading data from a database server.
927. Names and birth dates of friends
928. Accessing friend's database records
929. Important ResultSet states
930. JDBC™ to Java™ type conversions
931. Java™ to JDBC™ type conversions
932. Error prone type accessors!
933. Polymorphic accessor
934. Access by column name
935. Access by column index
936. Problem: null value ambiguity
937. Resolving null value ambiguity
938. Problem: Dynamic driver configuration
939. Shim driver (facade)
940. Users and groups
941. Isolation level
942. JDBC™ Isolation level
943. Setting the isolation level
944. Reasons for using Maven
945. Transitive dependencies
946. A basic persistence.xml JPA configuration file.
947. JPA persistence provider
948. Mapping hibintro.v1.model.User instances to a database.
949. A basic User class.
950. Mapping properties to attributes.
951. Annotating integrity constraints
952. Database schema mapping instances of hibintro.v1.model.User.
953. Loading a single object by a primary key value.
954. Retrieving hibintro.v1.model.User instances by HQL.
955. Business rules for projects
956. Persistence related object states
957. Introducing inheritance mapping
958. Modelling payment.
959. A single relation mapping.
960. Mapping the inheritance hierarchy.
961. Inserting payment information
962. Figure subclasses
963. Joined subclass mapping.
964. Implementing Object.equals(Object) by natural keys
965. JPA caches.
966. Common project steps #1/3
967. Common project steps #2/3
968. Common project steps #3/3
969. UNIX grep sample
970. Database grep requirements
971. Connection profile handling
972. Search level specification
973. Property based searches
974. Documentation content
975. Code structure
976. The env.template file
977. Online documentation samples
978. Create and publish a Hetzner account
979. Your cloud project
980. Server creation prerequisite: A Firewall
981. Your first server
982. Server access by ssh
983. No ssh password based login
984. Server access by web gui
985. Current server security flaws
986. Safety considerations
987. ssh-keygen for elliptic key creation
988. An elliptic ssh public / private key pair
989. Result of ssh-keygen execution (client side)
990. Transfer public key from client to server
991. Cleaning up!
992. Tedious: Passphrase required for each remote login
993. Solving the passphrase issue
994. Behind the scenes: How does it work?
995. Intermediate host hopping
996. Intermediate host hopping fails
997. Intermediate host hopping options
998. Enable ssh agent forwarding
999. Forwarding port 80 to 2000 at localhost
1000. Frequent use e.g. connecting to remote database server
1001. X11 browser application forwarding
1002. Network file copy using scp
1003. Network file copy using rsync and ssh.
1004. Shell / Bash
1005. Choosing a text editor
1006. Secure Shell
1007. Working with files
1008. Network
1009. Processes handling
1010. Suggested readings:
1011. .deb packages
1012. The dpkg command
1013. The apt command
1014. Rationale using PPA's
1015. What's it all about?
1016. Terraform resources
1017. Creating databases
1018. Creating cloud resources
1019. Getting started: The Hetzner API token
1020. Minimal Terraform configuration
1021. Terraform init
1022. Terraform plan
1023. Terraform apply
1024. A word on storing secrets
1025. Credentials by E-Mail
1026. Problems: 😟
1027. ssh access, firewall
1028. ssh access, public key
1029. Apply ssh key access
1030. Output data details #1/2
1031. Output data details #2/2
1032. Problem 2: VCS and visible provider API token 😱
1033. Solution by variable
1034. Solution by file
1035. Introduction and reference
1036. In a nutshell
1037. Configuration options
1038. Bash DIY
1039. Terraform interface to Cloud Init
1040. Using template files
1041. cloud-init file validation
1042. Yaml syntax quirk 1: Missing indentation
1043. Yaml missing indentation resolution
1044. Yaml syntax quirk 2: Wrong indentation
1045. Solving Yaml quirks using yamlencode / JSON
1046. Cloud-init configuration file validation
1047. Watch out for your enemies!
1048. Problem: Duplicate known_hosts entry on re-creating server
1049. Solution: Generating known_hosts ...
1050. ... and ssh wrapper
1051. Failsafe console login
1052. Avoiding Yaml parsing issues
1053. Terraform module Documentation
1054. Example: Creating a JSON host meta data file
1055. Parent module / sub module layout
1056. Parent module implementation
1057. Sub module implementation
1058. Sub module, JSON template file Tpl/hostdata.json and result
1059. Parent module vs. sub module context
1060. A volume: The easy way
1061. Unix mount
1062. Volume details
1063. Providing a mount point's name
1064. De-coupling server and volume creation
1065. Subdomain per group
1066. Key file location
1067. Querying DNS by zone transfer
1068. Creating an »A« record with TTL=10
1069. Modify by delete/create
1070. Mind record caching
1071. Loop documentation
1072. Using count
1073. Bind server ns1.sdi.hdm-stuttgart.cloud
1074. DNS provider
1075. DNS provider configuration
1076. Defining an “A” record
1077. Understanding web certificates
1078. Certificate trust level
1079. Certificates by Terraform
1080. dns_challenge provider
1081. rfc2136 provider configuration
1082. Bind server log file
1083. Private subnet overview
1084. Terraform network and subnetwork creation
1085. Gateway: External and internal interface
1086. intern host
1087. Lack of internet access
1088. Possible solutions
1089. http proxy apt-cacher-ng
1090. Cloud-init problem
1091. Service ready query script
1092. Terraform “service ready” dependency hook
1093. Documentation links
1094. DNS query commands
1095. DNS forward lookup
1096. Display A-record result only
1097. Important record types
1098. Name Servers: Query type NS
1099. Recommended readings
1100. Openldap server documentation
1101. What is LDAP anyway?
1102. LDAP Server cli bind
1103. Document Information Tree (DIT)
1104. Relative and absolute DNs
1105. User example
1106. objectClass
1107. objectClass clarifications
1108. Augmenting inetOrgPerson by posixAccount
1109. Structural objectClass definitions
1110. Search scopes
1111. Predicate based queries
1112. LDAP bind types
1113. LDIF exchange format
1114. LDIF sample
1115. OpenLdap server architecture
1116. An example LDAP Tree
1117. External documentation
1118. URI to filesystem mapping
1119. Virtual hosting
1120. Implementing virtual hosting
1121. IP based virtual hosting
1122. IP based, pros / cons
1123. Name based virtual hosting
1124. Name based, pros / cons
1125. LDAP backed authentication
1126. PHP FPM server
1127. File services
1128. Customer demands
1129. Driving factors
1130. Selected cloud file services
1131. Selected self hosting products
1132. Nextcloud features
1133. Lightning integration
1134. Installation
1135. Docker hub
1136. Search images
1137. Pull image using CLI
1138. Pull Nextcloud image
1139. Nextcloud based on Alpine
1140. Inspect image
1141. Search an image's tags
1142. Nextcloud image by version
1143. List images by CLI
1144. Nextcloud latest image
1145. Duplicate Nextcloud images
1146. Maven ringing a bell?
1147. Un tag image by version
1148. Remove image by version
1149. Starting Nextcloud container
1150. List running containers
1151. Enter running container
1152. Remove container
1153. List volumes
1154. List orphaned volumes
1155. Remove volumes
1156. Technical features
1157. Documentation tool chain proposal

List of Tables

1. 4 Byte Two's complement representation of int values.
2. Exercises in 113105 Software development 1
3. Exercises in 113492 Technical Documentation
4. Exercises in 113473 Database and application development
5. Exercises in 113475 Software defined Infrastructure

List of Equations

1. Calculating binomials by cancelling common factors.
1. Power series definition of $f (x) = e^{x}$
2. Power series definition of $f (x) = \sin (x)$
3. Reordering of terms with respect to an implementation.

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