Java Stacktrace Analyzer
Find root causes in Java and Spring stacktraces, highlight application frames, and collapse framework noise.
What is Java Stacktrace Analyzer?
Locate the deepest explicit Caused by exception, suppressed exceptions and candidate application frames. Framework wrappers can hide the useful clue; suppressed failures are a separate branch.
How to use Java Stacktrace Analyzer?
Step 1
Paste the full stacktrace including Caused by sections.
Step 2
Check the detected root cause and probable application frame.
Step 3
Copy the cleaned stacktrace for an issue, pull request, or incident note.
Example input / output
An IllegalStateException wrapping a SQLIntegrityConstraintViolationException points first to the database constraint, then to the application's order-creation frame. It does not prove that the last library frame is where the bug belongs.
Example input
java.lang.IllegalStateException: Order failed
at com.acme.orders.OrderService.create(OrderService.java:42)
Caused by: java.sql.SQLIntegrityConstraintViolationException: Duplicate order_id
at org.postgresql.Driver.execute(Driver.java:210)
Suppressed: java.io.IOException: Close failedCheck the result
- Async and reactive stacktraces can omit the original application frame unless debug hooks are enabled.
- Generated proxies and reflection frames may appear before your real service method.
Practical developer examples
Keep the complete cause chain
Truncated traces and … N more lines share frames with enclosing exceptions. Preserve the original so the call path can be reconstructed.
Verify package ownership
The tool filters common JDK/framework packages heuristically. Match candidate frames to your real project package and deployed source revision.
Common developer use cases
Root-cause labeling is a starting point for investigation. Async boundaries, custom frameworks and omitted frames require additional logs and source context.
Common issues
FAQ
Is a suppressed exception the primary cause?
Not automatically. It often records a secondary failure such as resource cleanup. Inspect it separately from Caused by.
Why are library frames still useful?
They show execution context and transport behavior. The tool retains the original trace so important evidence is not discarded.