# Write Script Java

> MUST use when writing Java scripts.

- Skill: `mahabdalla/write-script-java` (Agent Skill)
- Install (CLI): `npx skillmds@latest add mahabdalla/write-script-java`
- Raw SKILL.md: https://api.skillmd.com/api/skills/mahabdalla/write-script-java/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: mahabdalla (https://skillmd.com/u/mahabdalla)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/mahabdalla/write-script-java

---


## CLI Commands

Place scripts in a folder. After writing, tell the user they can run:
- `wmill generate-metadata` - Generate .script.yaml and .lock files
- `wmill sync push` - Deploy to Windmill

Do NOT run these commands yourself. Instead, inform the user that they should run them.

Use `wmill resource-type list --schema` to discover available resource types.

# Java

The script must contain a Main public class with a `public static main()` method:

```java
public class Main {
    public static Object main(String name, int count) {
        java.util.Map<String, Object> result = new java.util.HashMap<>();
        result.put("name", name);
        result.put("count", count);
        return result;
    }
}
```

**Important:**
- Class must be named `Main`
- Method must be `public static Object main(...)`
- Return type is `Object` or `void`

## Maven Dependencies

Add dependencies using comments at the top:

```java
//requirements:
//com.google.code.gson:gson:2.10.1
//org.apache.httpcomponents:httpclient:4.5.14

import com.google.gson.Gson;

public class Main {
    public static Object main(String input) {
        Gson gson = new Gson();
        return gson.fromJson(input, Object.class);
    }
}
```

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