How to access objects declared and initialized outside the call() method of JavaRDD

问题

I am unable to access objects declared and initialized outside the call() method of JavaRDD.
In the below code snippet, call() method makes a fetch call to C* but since javaSparkContext is defined outside the call method scope so compiler give a compilation error.

stringRdd.foreach(new VoidFunction<String>() {
                @Override
                public void call(String str) throws Exception {
                    JavaRDD<String> vals = javaFunctions(javaSparkContext).cassandraTable("schema", "table", String.class)
                            .select("val");
                }
            });

In other languages I have used closure to do this but not able to achieve the same here. Can someone suggest how to achieve this in the current code context.

来源：https://stackoverflow.com/questions/26517621/how-to-access-objects-declared-and-initialized-outside-the-call-method-of-java