Méthode instanciée Java Nashorn

Question

Je pensais essayer la fonctionnalité de script Nashorn. Tout fonctionne très bien, et je semble pouvoir appeler des méthodes statiques de mon script .js comme ceci:

var fun3 = function() { 
    print("Another day!"); 
    var Go = Java.type('somePack.Go'); 
    var result = Go.fun1('John Doe'); 
    print("\n" + result); 
} 

Inside my "Go" classe java:

public static String fun1(String name) { 
    System.out.format("Hi there from Java, %s", name); 
    return "greetings from java"; 
} 

Mais ce que je voudrais faire est de rendre la méthode fun1 non statique, pour en faire une méthode instanciée.

public String fun1(String name) { 
     System.out.format("Hi there from Java, %s", name); 
     return "greetings from java"; 
    } 

Dans mes script.js J'ai essayé:

var Go = new Java.type('somePack.Go'); 

Mais je reçois l'erreur:

Caused by: <eval>:19 TypeError: function type() { [native code] } is not a constructor function 

est-il un moyen facile de réaliser ce que je suis après?

Merci

pile complète:

at jdk.nashorn.api.scripting.NashornScriptEngine.throwAsScriptException(NashornScriptEngine.java:470) 
    at jdk.nashorn.api.scripting.NashornScriptEngine.invokeImpl(NashornScriptEngine.java:392) 
    at jdk.nashorn.api.scripting.NashornScriptEngine.invokeFunction(NashornScriptEngine.java:190) 
    at somePack.Go.go(Go.java:35) 
    at somePack.Go.main(Go.java:16) 
Caused by: <eval>:19 TypeError: function type() { [native code] } is not a constructor function 
    at jdk.nashorn.internal.runtime.ECMAErrors.error(ECMAErrors.java:57) 
    at jdk.nashorn.internal.runtime.ECMAErrors.typeError(ECMAErrors.java:213) 
    at jdk.nashorn.internal.runtime.ECMAErrors.typeError(ECMAErrors.java:185) 
    at jdk.nashorn.internal.runtime.ECMAErrors.typeError(ECMAErrors.java:172) 
    at jdk.nashorn.internal.runtime.ScriptFunctionData.getBestConstructor(ScriptFunctionData.java:244) 
    at jdk.nashorn.internal.runtime.ScriptFunction.findNewMethod(ScriptFunction.java:758) 
    at jdk.nashorn.internal.runtime.ScriptObject.lookup(ScriptObject.java:1827) 
    at jdk.nashorn.internal.runtime.linker.NashornLinker.getGuardedInvocation(NashornLinker.java:104) 
    at jdk.nashorn.internal.runtime.linker.NashornLinker.getGuardedInvocation(NashornLinker.java:98) 
    at jdk.internal.dynalink.support.CompositeTypeBasedGuardingDynamicLinker.getGuardedInvocation(CompositeTypeBasedGuardingDynamicLinker.java:176) 
    at jdk.internal.dynalink.support.CompositeGuardingDynamicLinker.getGuardedInvocation(CompositeGuardingDynamicLinker.java:124) 
    at jdk.internal.dynalink.support.LinkerServicesImpl.getGuardedInvocation(LinkerServicesImpl.java:154) 
    at jdk.internal.dynalink.DynamicLinker.relink(DynamicLinker.java:253) 
    at jdk.nashorn.internal.scripts.Script$Recompilation$2$384$\^eval\_.fun3(<eval>:19) 
    at jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:637) 
    at jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:494) 
    at jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:393) 
    at jdk.nashorn.api.scripting.ScriptObjectMirror.callMember(ScriptObjectMirror.java:199) 
    at jdk.nashorn.api.scripting.NashornScriptEngine.invokeImpl(NashornScriptEngine.java:386) 

Answer 1

Vous devez utiliser

var Go = Java.type('somePack.Go'); 
var goObject = new Go();