Run a Java library

Use Java classes in JavaScript

1. Include CheerpJ on your page

<script src=""></script>

2. Initialize CheerpJ and load your Java library

await cheerpjInit();
const cj = await cheerpjRunLibrary("/app/library.jar");
Don’t forget to use the /app/ prefix
It is common for first-time users to forget to add the prefix β€œ/app/” when passing the JAR location to cheerpJRunLibrary().

This will load library.jar from the root of your web server.

3. Call Java from JavaScript

const MyClass = await;
const obj = await new MyClass();
await obj.myMethod();

Further reading

Was this page helpful?
Suggest changes