CODEWITHSUNDEEP
javaandroidarraylist
Steve
Steve

Reputation: 103

How to make an ArrayList out of a String inside an ArrayList?

I have this ArrayList ArrayList<TvShowEpisode> mEpisodes = new ArrayList<TvShowEpisode>();

in this example let's say mEpisodes returns 3 elements

mEpisodes = [
{
mEpisode = "10", 
mTitle = "orange",
mSeason = "05",}
{
mEpisode = "11", 
mTitle = "black",
mSeason = "05",}
{
mEpisode = "12", 
mTitle = "blue",
mSeason = "05",}
]

what I want is to make an ArrayList out of mEpisodes that returns the value of mEpisode meaning {10, 11, 12}

Upvotes: 0

Views: 139

Answers (2)

SgtOmer
SgtOmer

Reputation: 215

Use stream:

mEpisodes.stream().map(episode -> episode.mEpisode).collect(Collectors.toCollection(ArrayList::new));

Upvotes: 0

Faisal
Faisal

Reputation: 725

If you just want to print/access value of mEpisode then you can do this :

for(TvShowEpisode tvShowEpisode : mEpisodes)
{
    System.out.println(tvShowEpisode.mEpisode);
}

If you want to get one value and store it into separate ArrayList which should be String type than do this:

ArrayList<String> mEpidsodeNames = new ArrayList<>();
for(TvShowEpisode tvShowEpisode : mEpisodes)
{
    mEpidsodeNames.add(tvShowEpisode.mEpisode);
}

Upvotes: 1

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