Managing File System State in JUnit 5 with @TempDir
Stop leaving temporary files behind after tests. Learn how to use JUnit 5's @TempDir to automate the creation and cleanup of isolated test directories.
Loading…
ReadMeFeed / Community knowledge
Java
Real questions. Useful conversations. Find the people who know your stack.
Java
Languages & runtimes · #java
junitDiagnosing False‑Positive Hardcoded Secret Warnings in Codeac for Java Test Code
Guide to tell when Codeac’s hardcoded‑secret warning is a false positive in Java test code and how to safely suppress or fix it.
Reduce Style Drift in Java Projects with Eclipse Save Actions
Learn how Eclipse Save Actions automatically format and organize imports on every Java file save, reducing style drift and review overhead.
eclipseDropwizard Health Checks: Design, Register, and Evaluate Your App’s Core Components
Dropwizard health checks let you expose a lightweight /health endpoint to monitor DBs, caches, and external services. Learn how to design, register, and evaluate checks, plus trade‑offs and production tips.
dropwizardDiagnosing and Fixing JSON Parsing Failures in Java Jackson Services
A diagnostic guide for resolving Jackson JSON parsing errors in Java, covering syntax failures, encoding mismatches, schema errors, and memory exhaustion.
jsonUsing Semaphores to Throttle Concurrent API Calls
Learn how a Java Semaphore throttles concurrent API calls, preventing overload while avoiding the pitfalls of mutex‑based approaches.
JPA Offset Pagination: When to Use setFirstResult and When to Switch to Keyset
JPA offset pagination works for bounded admin pages but degrades on deep feeds. Learn when to use setFirstResult, when to switch to keyset pagination, and how to verify the generated SQL.
hibernateArchitecting Hibernate Pagination to Prevent In-Memory Exhaustion
Prevent OutOfMemoryErrors in Hibernate by resolving the HHH000104 warning. Learn the two-step fetching pattern to combine JOIN FETCH with database-level pagination.
dyalogUsing Eclipse Hot Code Replace to Update Java Code at Runtime
Learn how Eclipse’s Hot Code Replace (HCR) lets you edit a method’s body while debugging, apply the change without restarting the JVM, and understand its limits and common pitfalls.