How can I use JavaScript in Java

Question

I wanted to build a small product in which I wanted to give a kind of feature in which user can write a script language kind of JavaScript   And also from JavaScript able to build objects and calling methods on them   Is there any framework for this

User · Answer

I just wanted to answer something new for this question - J2V8.

Author Ian Bull says "Rhino and Nashorn are two common JavaScript runtimes, but these did not meet our requirements in a number of areas:

Neither support ‘Primitives‘. All interactions with these platforms require wrapper classes such as Integer, Double or Boolean. Nashorn is not supported on Android. Rhino compiler optimizations are not supported on Android. Neither engines support remote debugging on Android.""

Highly Efficient Java & JavaScript Integration

Github link

User · Answer

You can use ScriptEngine  example      public class Main       public static void main String   args            StringBuffer javascript   null          ScriptEngine runtime   null           try               runtime   new ScriptEngineManager   getEngineByName  javascript                javascript   new StringBuffer                 javascript append  1   1                 double result    Double  runtime eval javascript toString                  System out println  Result      result             catch  Exception ex                System out println ex getMessage

User · Answer

Rhino is what you are looking for      Rhino is an open-source implementation of JavaScript written entirely   in Java  It is typically embedded into Java applications to provide   scripting to end users    Update  Now Nashorn  which is more performant JavaScript Engine for Java  is available with jdk8

User · Answer

Java includes a scripting language extension package starting with version 6   See the Rhino project documentation for embedding a JavaScript interpreter in Java    Edit   Here is a small example of how you can expose Java objects to your interpreted script   public class JS     public static void main String args    throws Exception       ScriptEngine js   new ScriptEngineManager   getEngineByName  javascript        Bindings bindings   js getBindings ScriptContext ENGINE SCOPE       bindings put  stdout   System out       js eval  stdout println Math cos Math PI              Prints  -1 0  to the standard output stream

[java] How can I use JavaScript in Java?

Examples related to java

Examples related to javascript

Examples related to apache

Examples related to object