Java Data Management Course

Data Management Course Overview

Table of Contents

• Content
• Aspects
  • 👶 Introduction
  • 💪 Workout
  • 🦑 Deep
  • ✨ New
  • 🔮 Obscura

Content

Below you can find the ordered content of the topic, in a linear progression

The linear progression of content aims to cover all content, course by course, workout by workout as follows:

• first course is the only core one, denoted by its manifest
• the next course is denoted by the first item of the next array in each course manifest
• each course has its order of workouts designated by the sections field in the same aforementioned manifest

1. arrays

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	collections-vs-arrays	✅	👶 introduction	❌	✅	✅	❌	❌
2	using-arrays-parallelsort	✅	🦑 deep 🔮 obscura ✨ new	❌	✅	✅	❌	❌
3	multidimensional-array-declaration	✅	👶 introduction	❌	✅	✅	❌	❌
4	copying-an-array-with-system-arraycopy	✅	👶 introduction 🔮 obscura	❌	✅	❌	❌	❌
5	arrays-vs-lists	✅	👶 introduction	❌	✅	✅	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

2. byte-operations-i

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	avoid-numerical-overflows-with-java8-exact-methods	✅	👶 introduction ✨ new	❌	✅	✅	❌	❌
2	detect-or-prevent-integer-overflow	✅	👶 introduction	❌	✅	✅	❌	❌
3	bitwise-and-bit-shift-operations-in-java	✅	👶 introduction	❌	❌	❌	❌	❌
4	negative-byte-values	✅	👶 introduction 🔮 obscura	❌	❌	❌	❌	❌
5	bitwise-operations-in-java	✅	👶 introduction 🔮 obscura	❌	✅	✅	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

3. file-management

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	reading-and-writing-text-files	✅	👶 introduction	❌	✅	✅	❌	❌
2	how-to-create-directories-in-java	✅	👶 introduction	❌	❌	✅	❌	❌
3	checking-for-the-existence-of-files-and-directories	✅	👶 introduction	❌	❌	✅	✅	❌
4	create-system-file-paths-using-the-path-class	✅	👶 introduction	❌	✅	✅	❌	❌
5	deleting-files-and-directories	✅	👶 introduction	❌	❌	✅	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

4. numbers-i

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	default-values-for-unassigned-data-types	✅	👶 introduction	❌	✅	✅	❌	❌
2	autoboxing-and-unboxing	✅	👶 introduction	❌	❌	✅	✅	❌
3	use-primitive-types-instead-of-wrapper-classes-when-possible	✅	👶 introduction	❌	✅	✅	❌	❌
4	generating-random-numbers-in-java	✅	👶 introduction	❌	❌	❌	❌	❌
5	use-underscores-to-separate-digits-in-numeric-literals	✅	👶 introduction 🔮 obscura	❌	❌	❌	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

5. numbers-ii

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	using-valueof-to-convert-strings-to-numeric-values	✅	👶 introduction	❌	❌	❌	❌	❌
2	checking-a-double-for-nan-value	✅	👶 introduction	❌	❌	❌	❌	❌
3	careful-numeric-data-conversions	✅	👶 introduction	❌	❌	❌	✅	❌
4	do-not-attempt-comparisons-with-nan	✅	👶 introduction	❌	✅	✅	✅	❌
5	trigonometry-using-the-math-class	✅	👶 introduction	❌	❌	❌	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

6. strings-i

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	replace-a-substring	✅	👶 introduction	❌	❌	❌	❌	❌
2	use-string-split-to-split-a-string-using-regular-expressions	✅	👶 introduction	❌	❌	❌	✅	❌
3	finding-a-substring-in-a-string	✅	👶 introduction	❌	❌	❌	❌	❌
4	determining-string-equality	✅	👶 introduction	❌	❌	❌	❌	❌
5	removing-leading-or-trailing-white-space-from-a-string	✅	👶 introduction	❌	❌	❌	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

7. strings-ii

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	converting-numbers-to-strings	✅	👶 introduction	❌	❌	❌	❌	❌
2	converting-a-string-to-upper-or-lower-case	✅	👶 introduction	❌	❌	❌	❌	❌
3	using-printstream-format-to-format-a-string-before-printing	✅	👶 introduction	❌	✅	✅	❌	❌
4	use-strings-in-a-switch-statement	✅	👶 introduction	❌	❌	✅	❌	❌
5	relative-url-s-in-java	✅	👶 introduction	❌	❌	❌	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

8. strings-iii

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	avoid-floating-point-when-calculating-exact-quantities-such-as-money	✅	👶 introduction	❌	❌	❌	❌	❌
2	express-binary-literals-with-0b-and-hexadecimal-literals-with-0x	✅	👶 introduction	❌	❌	❌	❌	❌
3	use-decimalformat-class-to-format-numbers	✅	👶 introduction	❌	✅	✅	❌	❌
4	string-formatting-and-parsing-with-simpledateformat	✅	👶 introduction	❌	✅	✅	❌	❌
5	altering-format-string-output-by-changing-a-format-specifier-s-argument-index	✅	👶 introduction	❌	❌	✅	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

9. data-tips-i

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	translating-scanner-tokens-into-primitive-types	✅	👶 introduction	❌	✅	✅	❌	❌
2	the-console-class	✅	👶 introduction	❌	❌	✅	❌	❌
3	system-out-vs-system-err	✅	👶 introduction	❌	❌	✅	❌	❌
4	system-independent-path-specification	✅	👶 introduction 🔮 obscura	❌	❌	✅	❌	❌
5	use-try-with-resources-instead-of-finally	✅	👶 introduction ✨ new	❌	❌	❌	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

10. wildcards-generic-code

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	wildcards-vs-objects	✅	💪 workout 🦑 deep	❌	❌	❌	❌	❌
2	using-unbounded-wildcards	✅	💪 workout 🦑 deep	❌	❌	❌	❌	❌
3	upper-bounded-wildcards	✅	💪 workout 🦑 deep	❌	❌	❌	❌	❌
4	using-lower-bounded-wildcards	✅	💪 workout 🦑 deep	❌	❌	❌	❌	❌
5	wildcards-extras	✅	💪 workout 🦑 deep	❌	❌	✅	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

11. writing-generic-code

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	writing-generic-methods	✅	👶 introduction	❌	❌	❌	❌	❌
2	type-inference-in-generic-methods	✅	💪 workout 🦑 deep	❌	❌	✅	❌	❌
3	using-bounded-type-parameters-in-generic-methods	✅	💪 workout 🦑 deep	❌	❌	✅	❌	❌
4	writing-generic-classes	✅	👶 introduction	❌	❌	❌	❌	❌
5	type-inference-in-generic-classes	✅	💪 workout 🦑 deep	❌	❌	❌	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

12. buffered-streams

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	using-buffered-streams	✅	👶 introduction 💪 workout	❌	❌	✅	❌	❌
2	flushing-buffered-streams	✅	💪 workout 🦑 deep	❌	❌	❌	❌	❌
3	stringbuffer-vs-stringbuilder	✅	👶 introduction 💪 workout	❌	❌	❌	❌	❌
4	using-stringbuilder-class	✅	👶 introduction	❌	❌	❌	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

13. data-structures-implementation

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	java-treemap-and-treeset-overview	✅	👶 introduction	❌	❌	❌	❌	❌
2	hashing	✅	👶 introduction	❌	❌	✅	❌	❌
3	difference-between-hashmap-and-hashtable	✅	👶 introduction	❌	✅	✅	❌	❌
4	java-hashset-and-hashmap-overview	✅	👶 introduction	❌	❌	❌	❌	❌
5	how-and-when-to-use-weakhashmap-class	✅	💪 workout 🦑 deep	❌	✅	✅	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

14. file-system-i

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	renaming-a-file	✅	👶 introduction	❌	✅	✅	❌	❌
2	how-to-list-all-files-in-a-directory-that-match-a-filename-extension-in-java	✅	👶 introduction	❌	❌	✅	❌	❌
3	list-contents-of-a-directory-with-newdirectorystream	✅	👶 introduction	❌	❌	✅	❌	❌
4	listing-a-file-system-s-root-directories	✅	👶 introduction	❌	❌	✅	❌	❌
5	system-properties	✅	👶 introduction	❌	✅	✅	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

15. file-system-ii

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	reading-file-attributes	✅	💪 workout 🔮 obscura	❌	❌	✅	❌	❌
2	retrieving-file-store-attributes	✅	💪 workout 🔮 obscura	❌	❌	✅	❌	❌
3	metadata-creating-a-user-defined-file-attribute	✅	💪 workout 🔮 obscura	❌	✅	✅	❌	❌
4	using-the-openoption-vararg-to-define-file-writing-behavior	✅	💪 workout 🔮 obscura	❌	❌	❌	❌	❌
5	metadata-setting-a-file-s-owner	✅	💪 workout 🔮 obscura	❌	❌	✅	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

16. data-tips-ii

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	do-not-perform-bitwise-and-arithmetic-operations-on-the-same-data	✅	👶 introduction 🔮 obscura	❌	❌	✅	❌	❌
2	math-vs-strictmath-in-java	✅	👶 introduction 🔮 obscura	❌	✅	✅	❌	❌
3	retrieve-the-component-type-of-an-array	✅	👶 introduction	❌	✅	✅	❌	❌
4	use-arrays-aslist-to-initialise-lists	✅	👶 introduction	❌	✅	✅	❌	❌
5	using-enum-in-java	✅	👶 introduction	❌	✅	✅	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

17. tools-i

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	how-to-retrieve-running-java-processes-with-jps	✅	🦑 deep 🔮 obscura	❌	✅	✅	❌	❌
2	cpus-count-in-a-system	✅	💪 workout 🔮 obscura	❌	❌	❌	❌	❌
3	intro-to-hprof	✅	🦑 deep 🔮 obscura	❌	✅	✅	❌	❌
4	the-jhat-tool	✅	🦑 deep 🔮 obscura	❌	✅	✅	❌	❌
5	intro-to-jconsole	✅	🦑 deep 🔮 obscura	❌	✅	✅	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

18. tools-ii

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	the-jinfo-tool	✅	🦑 deep 🔮 obscura	❌	✅	✅	❌	❌
2	intro-to-jstack-tool	✅	🦑 deep 🔮 obscura	❌	✅	✅	❌	❌
3	the-jmap-tool	✅	🦑 deep 🔮 obscura	❌	✅	✅	❌	❌
4	java-naming-and-directory-interface-jndi	✅	🦑 deep 🔮 obscura	❌	❌	✅	❌	❌
5	the-concurrent-low-pause-collector-in-java	✅	🦑 deep 🔮 obscura	❌	❌	❌	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

19. file-system-iii

Insights:

no	name	content	aspects	standards	PQ	RQ	Quiz	done
1	control-os-process-es-in-java8	✅	🦑 deep 🔮 obscura	❌	✅	✅	❌	❌
2	how-to-check-for-static-dependencies-of-applications-and-libraries-from-the-command-line	✅	🦑 deep 🔮 obscura	❌	✅	✅	❌	❌
3	java8-s-new-stampedlock	✅	🦑 deep 🔮 obscura ✨ new	❌	✅	✅	❌	❌
4	jjs-oracle-nashorn-newest-javascript-engine	✅	🦑 deep 🔮 obscura ✨ new	❌	✅	✅	❌	❌
5	use-optional-s-type-in-order-to-avoid-nullpointerexception-s	✅	💪 workout ✨ new	❌	✅	✅	❌	❌

Exercises:

⚠️ There are no insights in this workout.

Game:

⚠️ There is no game in this workout.

Aspects

Given the insights are tagged with aspects, we can filter over the linear content progression and create learning sub-paths.

These sub-path progressions will most likely not cover all content, but they will ensure and enforce an unified learning experience, tailor for the user wish.

For example, a user might be interested in new additions and updates of a language, rather than introduction lessions. Note that these sub-paths don't take games into consideration

👶 Introduction

If you are being introduced to the topic for the first time

Insights:

1. collections-vs-arrays
2. multidimensional-array-declaration
3. copying-an-array-with-system-arraycopy
4. arrays-vs-lists
5. avoid-numerical-overflows-with-java8-exact-methods
6. detect-or-prevent-integer-overflow
7. bitwise-and-bit-shift-operations-in-java
8. negative-byte-values
9. bitwise-operations-in-java
10. reading-and-writing-text-files
11. how-to-create-directories-in-java
12. checking-for-the-existence-of-files-and-directories
13. create-system-file-paths-using-the-path-class
14. deleting-files-and-directories
15. default-values-for-unassigned-data-types
16. autoboxing-and-unboxing
17. use-primitive-types-instead-of-wrapper-classes-when-possible
18. generating-random-numbers-in-java
19. use-underscores-to-separate-digits-in-numeric-literals
20. using-valueof-to-convert-strings-to-numeric-values
21. checking-a-double-for-nan-value
22. careful-numeric-data-conversions
23. do-not-attempt-comparisons-with-nan
24. trigonometry-using-the-math-class
25. replace-a-substring
26. use-string-split-to-split-a-string-using-regular-expressions
27. finding-a-substring-in-a-string
28. determining-string-equality
29. removing-leading-or-trailing-white-space-from-a-string
30. converting-numbers-to-strings
31. converting-a-string-to-upper-or-lower-case
32. using-printstream-format-to-format-a-string-before-printing
33. use-strings-in-a-switch-statement
34. relative-url-s-in-java
35. avoid-floating-point-when-calculating-exact-quantities-such-as-money
36. express-binary-literals-with-0b-and-hexadecimal-literals-with-0x
37. use-decimalformat-class-to-format-numbers
38. string-formatting-and-parsing-with-simpledateformat
39. altering-format-string-output-by-changing-a-format-specifier-s-argument-index
40. translating-scanner-tokens-into-primitive-types
41. the-console-class
42. system-out-vs-system-err
43. system-independent-path-specification
44. use-try-with-resources-instead-of-finally
45. writing-generic-methods
46. writing-generic-classes
47. using-buffered-streams
48. stringbuffer-vs-stringbuilder
49. using-stringbuilder-class
50. java-treemap-and-treeset-overview
51. hashing
52. difference-between-hashmap-and-hashtable
53. java-hashset-and-hashmap-overview
54. renaming-a-file
55. how-to-list-all-files-in-a-directory-that-match-a-filename-extension-in-java
56. list-contents-of-a-directory-with-newdirectorystream
57. listing-a-file-system-s-root-directories
58. system-properties
59. do-not-perform-bitwise-and-arithmetic-operations-on-the-same-data
60. math-vs-strictmath-in-java
61. retrieve-the-component-type-of-an-array
62. use-arrays-aslist-to-initialise-lists
63. using-enum-in-java

⚠️ There are no exercises tagged with this aspect in data-management. :warning: There are no games tagged with this aspect in data-management.

💪 Workout

Theory put into practice/that’s how you achieve X points

Insights:

1. wildcards-vs-objects
2. using-unbounded-wildcards
3. upper-bounded-wildcards
4. using-lower-bounded-wildcards
5. wildcards-extras
6. type-inference-in-generic-methods
7. using-bounded-type-parameters-in-generic-methods
8. type-inference-in-generic-classes
9. using-buffered-streams
10. flushing-buffered-streams
11. stringbuffer-vs-stringbuilder
12. how-and-when-to-use-weakhashmap-class
13. reading-file-attributes
14. retrieving-file-store-attributes
15. metadata-creating-a-user-defined-file-attribute
16. using-the-openoption-vararg-to-define-file-writing-behavior
17. metadata-setting-a-file-s-owner
18. cpus-count-in-a-system
19. use-optional-s-type-in-order-to-avoid-nullpointerexception-s

⚠️ There are no exercises tagged with this aspect in data-management. :warning: There are no games tagged with this aspect in data-management.

🦑 Deep

Prerequisite knowledge consisting of 2 or more 👶/💪 workouts

Insights:

1. using-arrays-parallelsort
2. wildcards-vs-objects
3. using-unbounded-wildcards
4. upper-bounded-wildcards
5. using-lower-bounded-wildcards
6. wildcards-extras
7. type-inference-in-generic-methods
8. using-bounded-type-parameters-in-generic-methods
9. type-inference-in-generic-classes
10. flushing-buffered-streams
11. how-and-when-to-use-weakhashmap-class
12. how-to-retrieve-running-java-processes-with-jps
13. intro-to-hprof
14. the-jhat-tool
15. intro-to-jconsole
16. the-jinfo-tool
17. intro-to-jstack-tool
18. the-jmap-tool
19. java-naming-and-directory-interface-jndi
20. the-concurrent-low-pause-collector-in-java
21. control-os-process-es-in-java8
22. how-to-check-for-static-dependencies-of-applications-and-libraries-from-the-command-line
23. java8-s-new-stampedlock
24. jjs-oracle-nashorn-newest-javascript-engine

⚠️ There are no exercises tagged with this aspect in data-management. :warning: There are no games tagged with this aspect in data-management.

✨ New

Recently added/gained traction feature

Insights:

1. using-arrays-parallelsort
2. avoid-numerical-overflows-with-java8-exact-methods
3. use-try-with-resources-instead-of-finally
4. java8-s-new-stampedlock
5. jjs-oracle-nashorn-newest-javascript-engine
6. use-optional-s-type-in-order-to-avoid-nullpointerexception-s

⚠️ There are no exercises tagged with this aspect in data-management. :warning: There are no games tagged with this aspect in data-management.

🔮 Obscura

Stories, obscure details that don’t specifically relate to a learning objective

Insights:

1. using-arrays-parallelsort
2. copying-an-array-with-system-arraycopy
3. negative-byte-values
4. bitwise-operations-in-java
5. use-underscores-to-separate-digits-in-numeric-literals
6. system-independent-path-specification
7. reading-file-attributes
8. retrieving-file-store-attributes
9. metadata-creating-a-user-defined-file-attribute
10. using-the-openoption-vararg-to-define-file-writing-behavior
11. metadata-setting-a-file-s-owner
12. do-not-perform-bitwise-and-arithmetic-operations-on-the-same-data
13. math-vs-strictmath-in-java
14. how-to-retrieve-running-java-processes-with-jps
15. cpus-count-in-a-system
16. intro-to-hprof
17. the-jhat-tool
18. intro-to-jconsole
19. the-jinfo-tool
20. intro-to-jstack-tool
21. the-jmap-tool
22. java-naming-and-directory-interface-jndi
23. the-concurrent-low-pause-collector-in-java
24. control-os-process-es-in-java8
25. how-to-check-for-static-dependencies-of-applications-and-libraries-from-the-command-line
26. java8-s-new-stampedlock
27. jjs-oracle-nashorn-newest-javascript-engine

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