Java

You can use Java to manually download Java. However, you can also use Launcher to automatically download Java.

const { Java } = require('eml-lib')

java()

async function java() {
  const java = new Java(null, 'goldfrite', 'https://admintool.electron-minecraft-launcher.com')

  try {
    await java.download()
  } catch (error) {
    console.error(error)
  }
}

Java constructor

Parameter	Type	Description	Required?
minecraftVersion	string	The version of Minecraft you want to install Java for. Set to null to get the version from the EML AdminTool. Set to latest_release to get the latest release version of Minecraft. Set to latest_snapshot to get the latest snapshot version of Minecraft.	No (default is null)
serverId	string	Your Minecraft server ID (eg. 'minecraft'). This will be used to create the server folder (eg. .minecraft). Java will be installed in the runtime/jre-X folder, where X is the major version of Java. If you don't want to install Java in the game folder, you must install Java by yourself.	Yes
url	string	The URL of the EML AdminTool website, to get the version from the EML AdminTool.	No

Java.getFiles() method

Get the files of the Java version to download.

Warning

You should not use this method directly. Use Java.download() instead.

Parameter	Type	Description	Required?
manifest	string	The manifest of the Minecraft version. If not provided, the manifest will be fetched.	No

Returns: Promise<File[]> - The Java files to download.

Throws: FETCH_ERROR - If the request to get the files fails.

Java.download() method

Download Java for the Minecraft version.

Throws: FETCH_ERROR - If the request to get the files fails. • DOWNLOAD_ERROR - If an error occurs while downloading Java.

Emits: download_progress - Java is downloading. • download_error - Error while downloading Java. • download_end - Java is downloaded. • java_info - The Java version and architecture.

Java.check() method

Check if Java is correctly installed.

Parameter	Type	Description	Required?
absolutePath	string	Absolute path to the Java executable. You can use ${X} to replace it with the major version of Java.	No (default is GAME FOLDER/runtime/jre-${X})
majorVersion	number	Major version of Java to check.	No (default is 8)

Returns: { version: string; arch: "64-bit" | "32-bit" } - The Java version and architecture.

Throws: JAVA_ERROR - If Java is not correctly installed.