bytedeco/javacv

compiling sample FaceApplet: error: cannot find symbol

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#2,344 opened on Jul 24, 2025

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Description

FaceApplet.java:50: error: cannot find symbol classifier = new CvHaarClassifierCascade(cvLoad(classifierFile.getAbsolutePath())); ^ symbol: method cvLoad(String) location: class FaceApplet

FaceApplet.java:101: error: cannot find symbol CV_HAAR_FIND_BIGGEST_OBJECT | CV_HAAR_DO_ROUGH_SEARCH); ^ symbol: variable CV_HAAR_FIND_BIGGEST_OBJECT location: class FaceApplet

FaceApplet.java:101: error: cannot find symbol CV_HAAR_FIND_BIGGEST_OBJECT | CV_HAAR_DO_ROUGH_SEARCH); ^ symbol: variable CV_HAAR_DO_ROUGH_SEARCH location: class FaceApplet

Contributor guide

Research direction
Check the OpenCV version used by JavaCV for the missing symbols cvLoad and CV HAAR * constants. Verify if they have been deprecated or renamed in newer versions. Update the sample code accordingly.
Tech stack
java
Domain
backend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JavaMaven
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70