Hi Mohammed,
as Jim noted you have to enable ES6 features using the —language=es6 option.
The official Script API does not support engine options, but you can use the
Nashorn API:
import javax.script.ScriptEngine;
import jdk.nashorn.api.scripting.NashornScriptEngineFactory;
NashornScriptEngineFactory factory = new NashornScriptEngineFactory();
ScriptEngine engine = factory.getScriptEngine("--language=es6");
Hannes
> Am 26.04.2017 um 16:00 schrieb Jim Laskey (Oracle) <james.las...@oracle.com>:
>
> You need to specify --language=es6 on the command line
>
>> On Apr 26, 2017, at 10:25 AM, Mohammed Sanaulla <sanaulla...@gmail.com>
>> wrote:
>>
>> 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
>
