Mcreator error

Syntax error on token "1.20", @ expected [Ln 1, Col 9]
Syntax error on token(s) misplaced construct(s) [Ln 1, Col 14]
Syntax error on token "everything", . expected [Ln 1, Col 20]
Syntax error on token(s) misplaced construct(s) [Ln 1, Col 39]
Syntax error, insert "SimpleName" to complete name [Ln 1, Col 57]

Code:

package 1.20 | The everything update;

public class Mod {

}

The editor is Visual Studio Code 2022 with JDK 17