r/javaTIL is a subreddit with 8k members. The most common kinds of discussions are advice requests and solution requests, and the community frequently discusses java, til, til:, example, and program.
A place for sharing something new you've learned about the Java programming language. Share code snippets, discuss ideas, and provide feedback to other coders!
Popular Themes in r/javaTIL
#1
Advice Requests
: "How to Generate Java code"
14 posts
#2
Solution Requests
: "JVM JIT optimization techniques"
12 posts
#3
Self-Promotion
: "Project Lombok – A Java Library to Reduce Boilerplate Code"
10 posts
#4
Pain & Anger
: "Stop converting time units the wrong way"
3 posts
Popular Topics in r/javaTIL
#1
Java
: "TIL I learned the most frequently mentioned words in the top 1000 StackOverflow questions tagged #Java [x-post /r/DataArt]"
141 posts
#2
Til
: "Til: You Can Declare A Method To Look Like An Array!"
24 posts
#3
Til:
: "Til: You Can Declare A Method To Look Like An Array!"
23 posts
#4
Example
: "Java HashSet | Example & Programs"
23 posts
#5
Program
: "Java HashSet | Example & Programs"
23 posts
#6
Jvm
: "Jvm JIT optimization techniques"
15 posts
#7
Spring
: "Black magic in Spring! About dependency override!"
12 posts
#8
Spring Boot
: "Simple and Easy way to Upload and Download Files in Java with Spring Boot - Source Code on GitHub"
7 posts
#9
Learning
: "Learning Java Stream API"
6 posts
#10
Iterate
: "TIL how to install a Java agent in less than 30 seconds even when I can't directly set JVM arguments"
6 posts
Member Growth in r/javaTIL
Yearly
+223 members(3.1%)
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Last updated: June 15, 2026