Thanks a lot for the solution. It worked. But what is the standard way to execute ES6 Javascript in Java 9? Is there some documentation for it? Also I am looking for some documentation on internal workings of Nashorn script execution engine.
Regards, Sanaulla Mohamed Sanaulla <http://blog.sanaulla.info> | http://in.linkedin.com/in/mohamedsanaulla On 26 April 2017 at 17:12, Hannes Wallnöfer <hannes.wallnoe...@oracle.com> wrote: > 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 > > > >
