Java stream – the result is obtained after splitting the string twice

I have a string:

String modulesToUpdate = "potato:module1,tomato:module2";

I want to get it from it:

module1
module2

First, I must split it with "," and then with ":"

So I did this:

String files[] = modulesToUpdate.split(",");

for(String file: files){
    String f[] = file.split(":");
    for(int i=0; i<f.length; i++){
        System.out.println(f[1])
    }
}

This works, but the loop in the loop is not elegant

I'm trying to do the same thing with stream

So I did this:

Stream.of(modulesToUpdate)
            .map(line -> line.split(","))
            .flatMap(Arrays::stream)
            .flatMap(Pattern.compile(":")::splitAsStream)
            .forEach(f-> System.out.println(f.toString().trim()));

Output:

potato
module1
tomato
module2

How to reduce / filter it only gets:

module1
module2

Solution

Change one line:

.map(x -> x.split(":")[1])

Substitute:

.flatMap(Pattern.compile(":")::splitAsStream)

Or @ Holger mentioned in the comment:

.map(s -> s.substring(s.indexOf(':')+1))

This does not create intermediate arrays at all

The flatmap returns a stream and streams without an index, but in this case you need them to get the second tag