Check TypedArray Endianness on Nashorn (JavaScript engine on JVM)

Main.java

package net.lowreal;

import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;

public class Main {

    public static void main(String[] args) throws ScriptException {
        final ScriptEngineManager scriptEngineManager = new ScriptEngineManager();
        final ScriptEngine js = scriptEngineManager.getEngineByName("js");
        System.out.println(js);
        js.eval("var BYTE_ORDER = (function () {\n" +
                "\tvar buf = new ArrayBuffer(2);\n" +
                "\tvar i8 = new Uint8Array(buf);\n" +
                "\ti8[0] = 0xfe;\n" +
                "\ti8[1] = 0xff;\n" +
                "\tvar i16 = new Uint16Array(buf);\n" +
                "\treturn (i16[0] === 0xfeff) ? 'BIG_ENDIAN' : 'LITTLE_ENDIAN';\n" +
                "})();");
        js.eval("print(BYTE_ORDER);");
    }
}

out.txt

jdk.nashorn.api.scripting.NashornScriptEngine@587c290d
LITTLE_ENDIAN

Process finished with exit code 0