Cron Everything

Cron Everything is an IntelliJ IDEA plugin that adds cron expression tooling to .properties, .yaml/.yml files, and @Scheduled annotations in Java and Kotlin. It works on both Community and Ultimate editions.

Available on the JetBrains Marketplace · EULA

Inlay Hints Link to heading

Human-readable descriptions shown inline next to cron values — in .properties, .yaml/.yml, and @Scheduled annotations:

app.backup.cron=0 0 2 * * *    # at 02:00

spring:
  job:
    cron: "0 0 9 * * MON-FRI"    # at 09:00 Monday through Friday

@Scheduled(cron = "0 30 9 * * MON-FRI")   // at 09:30 Monday through Friday
void generateReport() { ... }

Hover over the hint to see the full description when it is truncated. Toggleable under Settings → Editor → Inlay Hints.

Next Execution Times Link to heading

A code vision lens shows the next scheduled run inline. Click it to open a popup listing the next N upcoming executions, formatted and timezone-adjusted to your preference.

Supported in .properties, .yaml/.yml, and @Scheduled annotations. Configure the count, timezone, and date/time format under Settings → Tools → Cron Everything.

Cron Builder Link to heading

A dedicated tool window (View → Tool Windows → Cron Builder) lets you compose and validate cron expressions interactively:

Live description and validation as you type
Preset expression templates
Next-10-executions preview with timezone control
Copy-to-clipboard button

Use the Edit with Cron Builder intention action (Alt+Enter) on any @Scheduled(cron = "...") attribute to open it pre-filled with the current expression.

Syntax Highlighting Link to heading

Each field of a cron expression in @Scheduled(cron = "...") annotations receives a distinct colour: seconds, minutes, hours, day-of-month, month, and day-of-week.

Customisable via Settings → Editor → Color Scheme → Cron Expression.

Spring Property Placeholders Link to heading

Inlay hints and code vision resolve ${my.property} references in @Scheduled(cron = "...") by looking up the value from .properties and .yaml/.yml files in the project.

Inspections and Quick Fixes Link to heading

Five built-in inspections catch common mistakes before they reach production:

Inspection	Level	Quick Fix
Invalid cron expression	Error	—
Expression runs every second (`* * * * * *`)	Warning	Change to every minute
Fixed minute confused with interval (`5 * * * ` vs `/5 * * * *`)	Warning	Convert to interval
Ambiguous numeric day-of-week (differs between Spring and Quartz)	Warning	Use named day (MON–SUN)
Unreachable date (e.g. Feb 30)	Warning	Use last safe day of month

Active in all supported file types and @Scheduled annotations. Toggleable individually under Settings → Editor → Inspections → Cron Everything.

Supported Formats Link to heading

Auto-detected from field count and syntax:

Format	Fields	Example
Unix	5 fields	`30 9 * * 1-5`
Spring	6 fields	`0 30 9 * * MON-FRI`
Quartz	6–7 fields	`0 30 9 ? * MON-FRI 2024`

Supported Locations Link to heading

.properties files
.yaml / .yml files
@Scheduled(cron = "...") annotations in Java and Kotlin

Requirements Link to heading

IntelliJ IDEA 2024.2 or later (Community or Ultimate).

Changelog Link to heading

1.0.0 — 2026-04-20 Link to heading

Per-field syntax highlighting in @Scheduled cron expressions (seconds, minutes, hours, day-of-month, month, day-of-week)
Cron Builder tool window with live validation, preset templates, and next-10-executions preview
“Edit with Cron Builder” intention action (Alt+Enter) on @Scheduled cron attributes
Copy-to-clipboard button in the Cron Builder
Spring property placeholders resolved in @Scheduled from .properties and .yaml/.yml

0.3.0 — 2026-04-15 Link to heading

Inlay hints for @Scheduled annotations in Java and Kotlin
Code vision lens showing the next scheduled execution; click for upcoming runs popup
Inspections for @Scheduled cron expressions with quick fixes

0.2.1 — 2026-04-14 Link to heading

Code vision lens showing next scheduled execution time inline; clicking opens a popup with the next N runs
Plugin settings (Settings → Tools → Cron Everything): execution count, timezone, date/time format, toggles for inlay hints and next executions

0.1.1 — 2026-04-09 Link to heading

Fixed: inlay hint tooltip not showing full text on Windows

0.1.0 — 2026-04-08 Link to heading

Inlay hints in .properties and .yaml/.yml files showing human-readable cron descriptions
Inspections: invalid expression, runs every second, fixed minute vs interval, ambiguous day-of-week, unreachable date — each with quick fixes
Supports Spring, Quartz, and Unix cron formats

January 1, 2024 Cron Everything — End User License Agreement