apache/rocketmq

Lots of deprecated classes and methods are used in example module with tons of check style error

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#3,397 opened on Oct 4, 2021

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 (8 comments) (1 reaction) (1 assignee)Java (22,431 stars) (11,978 forks)batch import
Good First Issuetype/enhancement

Description

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BUG REPORT

  1. Please describe the issue you observed:

  • What did you do (The steps to reproduce)? Execute mvn install in 5.0 branch to find the problems.

  • What did you expect to see? mvn install success

  • What did you see instead? mvn install failed

  1. Please tell us about your environment:

  2. Other information (e.g. detailed explanation, logs, related issues, suggestions how to fix, etc):

Contributor guide

Tech stack
java
Domain
backenddeveloper experience
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
JavaMavenCheckstyle
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
First, locate the example module in the RocketMQ repository (likely under modules/example or similar). Run `mvn install` in the 5.0 branch to reproduce the checkstyle errors. Identify deprecated classes and methods used in the example code, then find their replacements by checking RocketMQ's API documentation or newer Java conventions. Also review any checkstyle configuration files to understand the rules being violated. Check the issue comments for any hints or prior discussion about specific deprecated items.