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

Question

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}

Faisal · Accepted Answer · 2021-06-08 23:46:51Z

1

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);
}

answered Jun 8, 2021 at 23:46

Faisal

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Comments

SgtOmer · Accepted Answer · 2021-06-08 23:48:07Z

0

Use stream:

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

answered Jun 8, 2021 at 23:48

SgtOmer

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1 Comment

Steve Over a year ago

Thanks , but problem is I'm running java 1.7

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