Java execution JavaScript and container-session issues

1. Option A. JDK 6 starts with the built-in Rhino engine B. jdk8 replacement Nashorn (high performance, better for ECMA Support) C. Java version of Nodejs Vertx.io 2. Practical operation

public static void Main (string[] args) {Scriptenginemanager manager = new Scriptenginemanager ();        ScriptEngine engine = Manager.getenginebyname ("Nashorn");            try {int value=2;            Simplebindings bind=new simplebindings ();            Simplebindings bind2=new simplebindings ();            Simplebindings bind3=new simplebindings ();            Bind.put ("Points", value);            Bind2.put ("A", value);            Bind2.put ("B", value);            Bind3.put ("A1", value+1);             Bind3.put ("B1", value+2);            System.out.println (Engine.eval ("Points <50?50:math.ceil (56/50) *50", bind)); System.out.println (Engine.eval ("Demosum=function (A, b) {return a+b};    Demosum (A, b); ", Bind2)); Defines the method and invokes the support parameter binding System.out.println (Engine.eval (function (A1,B1) {function demosub (A, b) {return a+b;}    Return Demosub (A1,B1)}) (A1,B1) ", Bind3)";        Use JS to execute function immediately} catch (Scriptexception e) {e.printstacktrace (); }    }

3. Docker container handling Docker container in practice there is a principle that the image of the container should be as small as possible general people will choose to use the Alpine Linux distribution for Dockerfile as follows:

FROM frolvlad/alpine-oraclejdk8:fullVOLUME /tmpADD demo.class demo.classRUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtimeENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","app"]

Note the tag selection of the image uses the full execution result

Java execution JavaScript and container-session issues