Closures javascript vs java -

i learning javascript , came across following code snippet:

var outervalue = true;  function outerfn(){   assert( outerfn && outervalue, "these come closure." ); } 

insofar understand closures in above context, allow outerfn see outervalue variable.

my question is: how different other programming language - such java instance? expected outervalue's scope allow outerfn see it.

added later on:

    var outervalue = true;     function outerfn() {         console.log(outervalue);     }      function anotherfunction(arg){         console.log("anotherfunction");         arg.call(this);     }      anotherfunction(outerfn);  

is better example of closure?

your example not illustrate difference, not define scope of outervalue. in javascript, may nest functions arbitrarily within 1 another, , closures make sure inner functions can see outer functions when invoked after outer functions no longer in scope.

in java, nesting functions not (yet) legal, , closures not come play. having class field in place of outervalue , class method in place of function different, field of course associated scope of class, not method.