---
title: "cheerpjRunMain"
source: "https://cheerpj.com/docs/reference/cheerpjRunMain"
---

# cheerpjRunMain

Starts an application by executing the static main method of a Java class

```ts
async function cheerpjRunMain(
  className: string,
  classPath: string,
  ...args: string[]
): Promise<number>;
```

## Parameters

- **className (`string`)** - The fully-qualified name of the class with a static main method to execute. For example, `com.application.MyClassName`.
- **classPath (`string`)** - The location of the class’s jar in the [virtual filesystem](https://cheerpj.com/docs/explanation/File-System-support.md), with its dependencies separated by `:`.
- **..args (`string[]`, _optional_)** - Arguments to pass to the main method.

## Returns

`cheerpjRunMain` returns a [Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise) which resolves with the [exit code](https://en.wikipedia.org/wiki/Exit_status#Java) of the program. `0` indicates success, any other value indicates failure.

## Example

```js
const exitCode = await cheerpjRunMain(
  "fully.qualified.ClassName",
  "/app/my_application_archive.jar:/app/my_dependency_archive.jar",
  arg1,
  arg2
);
console.log(`Program exited with code ${exitCode}`);
```