Book teaching how to write modern and effective Java. It is maintained by the community, anyone can contribute.
active 2023-11-03 → 2026-05-04 (UTC)
Activity over time
Daily event counts in the loaded window
Line chart, 914 days from 2023-11-03 to 2026-05-04. Pushes: 49 total, peak 5 in a day. Pull requests: 101 total, peak 13 in a day. Issues: 71 total, peak 11 in a day. Comments: 64 total, peak 16 in a day. Stars: 158 total, peak 42 in a day.
- Pushes
- Pull requests
- Issues
- Comments
- Stars
Stars, PRs, issues and forks are under-captured in the later part of this window. GH Archive progressively stopped capturing non-push events during 2026 — −95% or worse by the end of the window. Every series here except Pushes fades for that reason, so a decline above reflects the archive, not this repository. Pushes stay reliable throughout, so read them, and the contributor counts derived from them, as the real signal. Data health has the measurements.
Top contributors
Pushes, PRs, issues, reviews and comments — stars and forks excluded, so this is contribution rather than popularity
| Contributor | Contributions | Pushes | PRs | Comments |
|---|---|---|---|---|
| bowbahdoe | 219 | 46 | 53 | 41 |
| Maia-Everett | 14 | 0 | 11 | 2 |
| github-actions[bot] | 12 | 1 | 6 | 5 |
| zohairawan | 10 | 0 | 10 | 0 |
| legoaggelos | 8 | 0 | 0 | 0 |
| aln-chg | 6 | 0 | 4 | 1 |
| mikerasch | 4 | 0 | 0 | 1 |
| karimdevelops | 4 | 0 | 3 | 1 |
| modwodmm | 3 | 0 | 0 | 2 |
| Zabuzard | 3 | 1 | 0 | 1 |
| slovdahl | 3 | 0 | 1 | 2 |
| Alathreon | 3 | 0 | 0 | 2 |
| rastin-sh | 3 | 0 | 0 | 2 |
| DainTrain | 2 | 0 | 1 | 0 |
| NyteSyntax | 2 | 0 | 0 | 1 |
| ArkhamCookie | 2 | 0 | 2 | 0 |
| Mehraddev | 2 | 0 | 2 | 0 |
| s-hassanin | 1 | 0 | 1 | 0 |
| Debangshu200 | 1 | 0 | 1 | 0 |
| Mathieu-Coupe | 1 | 0 | 0 | 0 |
Recent activity
Latest issues, pull requests and releases
- Issue#232bowbahdoe2026-05-04 01:29Code Structure III - Constructors Challenge 2 - Typos
- Pull request#233BryanF1nes2026-05-03 21:28
- Pull request#227bowbahdoe2026-04-07 03:09
- Issue comment#224jsbiff2026-03-22 10:59install_java.md - put version and package requirement in non-platform specific section at top of page
- Issue#221bowbahdoe2026-02-21 12:51use "coefficients" not "prefixes" in quadratic formula question
- Issue comment#218karimdevelops2026-02-15 19:0512.1. If: Added example of single statement if block
- Issue comment#218bowbahdoe2026-02-15 12:3912.1. If: Added example of single statement if block
- Pull request#217karimdevelops2026-02-15 06:40
- Pull request#213karimdevelops2026-02-14 20:27
- Pull request#213karimdevelops2026-02-14 08:29
- Pull request#209abdou-yh2026-02-13 10:29
- Issue#206bowbahdoe2026-01-20 23:52Function calls within function calls
- Issue#205Mathieu-Coupe2026-01-18 08:27Broken links in table of content of online version
- Issue#204bowbahdoe2025-12-27 03:27Bash instructions *mostly* followable from powershell
- Issue#202bowbahdoe2025-12-18 04:11"Avocado" spelled wrong
- Issue#199bowbahdoe2025-12-17 03:22Use of array initialization with size before introduction in boxed primitives
- Issue#198bowbahdoe2025-12-17 03:19Challenge 4 and 5 in boxed primitives wont actually print a smile
- Issue#197bowbahdoe2025-12-17 03:17Two challenge #4s in boxed primitives
- Issue#196S4qC2025-12-01 06:56A theme suggestion
- Issue comment#194bowbahdoe2025-11-22 13:16fix grammatical mistake.md
- Pull request#194bowbahdoe2025-11-22 13:16
- Pull request#195Mehraddev2025-11-21 07:49
- Pull request#192Mehraddev2025-11-20 19:21
- Issue comment#191NyteSyntax2025-11-18 19:27Challenge require knowledge that are not yet introduced
- Issue#191NyteSyntax2025-11-18 07:33Challenge require knowledge that are not yet introduced
Totals cover only the window loaded into ClickHouse and count events, not GitHub's lifetime totals — 158 stars here means stars gained during the window, not the repo's star count.