Bug 473353

Description Michael Strasser 2015-07-23 03:44:27 EDT

Hi,

when I am using the new map-functionality of Java 8 and I return a string, it works like a charme if I directly return a String like here:

new TreeSet<String>().stream().
                    map(l -> {
                        String prefix = (true) ? "a" : "b";

                        return  prefix;
                    }).
                    collect(Collectors.joining(","));


However, if I do not use the variable and directly return the result of the ternary operator, like below, I get a compilation error in eclipse:

new TreeSet<String>().stream().
                    map(l -> {
                        return  (true) ? "a" : "b";
                    }).
                    collect(Collectors.joining(","));


The compilation error states: The method collect(Collector<? super Object,A,R>) in the type Stream<Object> is not applicable for the arguments (Collector<CharSequence,capture#10-of ?,String>)


Both variants work with the normal Java compiler outside of Eclipse.