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javajavascriptjava-8nashorn

a nashorn engine bug?

i try to execute this simple short scripts to test nashorn :

basedir="/cassandara2/cassandra"
ba="/cassandara2/cassandra/lib/ST4-4.0.8.jar";
lib = "";
lib += '      <root url="jar://' + ba.replace(basedir, "$PROJECT_DIR");
print(lib);

it works perfectly but when i add sign $ after "$PROJECT_DIR" ==> "$PROJECT_DIR$" , i got this error: 

> java.lang.StringIndexOutOfBoundsException: String index out of range:
> 13    at java.lang.String.charAt(String.java:646)     at
> jdk.nashorn.internal.objects.NativeRegExp.appendReplacement(NativeRegExp.java:738)
>   at
> jdk.nashorn.internal.objects.NativeRegExp.replace(NativeRegExp.java:674)
>   at
> 
> jdk.nashorn.internal.objects.NativeString.replace(NativeString.java:763)
> bla...

Is it a bug of jdk 8 nashorn ( i used jdk8 u45) by this code : 

public static void main(String[] args) {
        try {
            ScriptEngineManager factory = new ScriptEngineManager();
            ScriptEngine engine = factory.getEngineByName("nashorn");

            Object eval = engine.eval("load(\"" + "script/demo.js" + "\");");
            System.out.println(eval);

        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
Solution

  • Bug filed. https://bugs.openjdk.java.net/browse/JDK-8081608 $ at the end of replace string causes index out of range error

    js> "string".replace("i", "$");
java.lang.StringIndexOutOfBoundsException: String index out of range: 1
jjs> "string".replace("i", "$ ");
str$ ng