jmrozanec/cron-utils

Health v2 · maintenance only

Adoption not part of the score

1208 stars · 271 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

cron-utils is a Java library for defining, parsing, validating, and migrating cron expressions across different cron dialects (Unix, Quartz, Cron4j), with support for human-readable localized descriptions. It also provides date/time interoperability for computing execution times from cron expressions.

Use cases

• parse and validate cron expressions in Java
• convert cron expressions between Quartz and Unix formats
• generate human-readable descriptions of cron schedules
• check when a cron job will next run
• build cron expressions programmatically without remembering field constraints
• merge multiple cron expressions into one

When to choose

• you need to work with cron expressions from multiple cron dialects in a JVM project
• you want to show users a readable description of a schedule instead of a raw cron string
• you need to migrate cron definitions between scheduling libraries
• you need to compute execution times for cron expressions

When to avoid

• you need an actual job scheduler to run tasks - use Quartz or Spring scheduling instead
• you are not on the JVM platform
• you need cron parsing in a lightweight script where a regex suffices

Facets

library · maturity active

parser date-time form-handling scheduling developer-tools programming-languages jvm cross-platform cron cron-expression quartz crontab human-readable scheduling automation android

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