Nashorn bug when calling overloaded method with varargs parameter

Question

Assume the following API:

package nashorn.test;

public class API {

    public static void test(String string) {
        throw new RuntimeException(\"Don\'t         


        

Answer 1

These are valid workarounds:

Explicitly calling the test(Integer[]) method using an array argument:

var API = Java.type("nashorn.test.API");
API.test([1]);

Removing the overload:

public class AlternativeAPI1 {
    public static void test(Integer... args) {
        System.out.println("OK");
    }
}

Removing the varargs:

public class AlternativeAPI3 {
    public static void test(String string) {
        throw new RuntimeException("Don't call this");
    }

    public static void test(Integer args) {
        System.out.println("OK");
    }
}

Replacing String by CharSequence (or any other "similar type"):

public class AlternativeAPI2 {
    public static void test(CharSequence string) {
        throw new RuntimeException("Don't call this");
    }

    public static void test(Integer args) {
        System.out.println("OK");
    }
}