Java JEPs That Reach Candidate Almost Always Ship, Census of 563 Proposals Finds
A pre-registered census by Munim, Inc. examined all 563 OpenJDK JDK Enhancement Proposals using the public JDK Bug System's change logs. It found that JEPs reaching Candidate status shipped at high rates, with 80.9% of those reaching it from 2018 to 2023 delivered within a year. Only 8.1% of JEPs that became Candidate between 2014 and 2020 failed to ship within five years, suggesting the main filter occurs before Candidate status. The study also found that 69.1% of the 68 proposals still in Draft or Submitted were over three years old, and that preview and incubator rounds made up a growing share of delivered features. The author notes that delivery dates were based on issue resolution dates, which often precede general availability by a median of 46 days.
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