Exception while using ES6 features (template strings) with Nashorn on JDK 9

[Mohammed Sanaulla]

Hello All,

I am using build b166 of JDK 9.

And I tried to run the following code:

ScriptEngineManager engineManager = new ScriptEngineManager();
ScriptEngine engine = engineManager.getEngineByName("nashorn");
engine.eval("function sum(a, b) { return a + b; }");
System.out.println(engine.eval("sum(1, 2);"));
engine.eval("var name = 'Sanaulla'");
System.out.println(engine.eval("print(`Hello Mr. ${name}`)"));

The sum(1,2) works fine by printing 3. But the other part i.e using
template strings throws the following exception:

Exception in thread "main" javax.script.ScriptException: <eval>:1:6
Expected an operand but found error
print(`Hello Mr. ${name}`)
      ^ in <eval> at line number 1 at column number 6
        at
jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.throwAsScriptException(NashornScriptEngine.java:469)
        at
jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.compileImpl(NashornScriptEngine.java:536)
        at
jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.compileImpl(NashornScriptEngine.java:523)
        at
jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:401)
        at
jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.eval(NashornScriptEngine.java:154)
        at
java.scripting/javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:264)
        at
nashorn.demo/com.packt.JavascriptCodeFromJavaDemo.main(JavascriptCodeFromJavaDemo.java:13)
Caused by: jdk.nashorn.internal.runtime.ParserException: <eval>:1:6
Expected an operand but found error
print(`Hello Mr. ${name}`)
      ^
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.AbstractParser.error(AbstractParser.java:297)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.AbstractParser.error(AbstractParser.java:282)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.unaryExpression(Parser.java:4443)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.expression(Parser.java:4601)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.conditionalExpression(Parser.java:4753)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.assignmentExpression(Parser.java:4692)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.argumentList(Parser.java:3706)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.leftHandSideExpression(Parser.java:3389)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.unaryExpression(Parser.java:4421)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.expression(Parser.java:4601)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.conditionalExpression(Parser.java:4753)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.assignmentExpression(Parser.java:4692)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.expression(Parser.java:4570)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.expression(Parser.java:4566)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.expressionStatement(Parser.java:1847)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.statement(Parser.java:1155)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.sourceElements(Parser.java:909)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.program(Parser.java:844)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.parse(Parser.java:325)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.parser.Parser.parse(Parser.java:285)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.runtime.Context.compile(Context.java:1500)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.runtime.Context.compileScript(Context.java:1467)
        at
jdk.scripting.nashorn/jdk.nashorn.internal.runtime.Context.compileScript(Context.java:750)
        at
jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.compileImpl(NashornScriptEngine.java:534)
        ... 5 more

I even tried running template strings from jjs console, but I am facing
same issue.

Can someone please guide me in using the ES6 features in Nashorn on JDK9?

Regards,
Sanaulla