Lambda expressions are not supported at this language level [duplicate]

Answer 1

You can use lambdas on Java 7, but it is a bit involved — you have to use something like Retrolambda.

Also you can do the same thing without lambdas. Lambdas can be easily represented via annonymous classes, however it is a lot more verbose.

final String first = data.first();
JavaRDD filteredData = data.filter(new Function() {
  @Override public Boolean call(String s) {
    return !s.contains(first);
  }
});