How to pass the ArrayList between methods and classes?

Question

I have this method which returns an arrayList tokens :

public static String[] Tokenize(String input) throws InvalidFormatException, IOException {
    InputStream is = new FileInputStream("en-token.bin");    
    TokenizerModel model = new TokenizerModel(is);   
    Tokenizer tokenizer = new TokenizerME(model);    
    String tokens[] = tokenizer.tokenize(input);     
    for (String a : tokens)
        System.out.println(a);   
    is.close();
    return tokens;
}

I want these tokens to be used in another method:

public static void findName(String[] input) throws IOException {
    InputStream is = new FileInputStream("en-ner-person.bin");   
    TokenNameFinderModel model = new TokenNameFinderModel(is);
    is.close();  
    NameFinderME nameFinder = new NameFinderME(model);   
    Span nameSpans[] = nameFinder.find(input);   
    for(Span s: nameSpans)
        System.out.println(s.toString());           
}

Also, how can I use this tokens arrayList in another class something like,

public class Main{
    public static void main( String[] args) throws Exception
    {
        Anotherclass.Tokenize(input);
        Anotherclass.findName(tokens);

    }
}

I'm unable to figure this out! Please help me.

Thanks a ton!

Your method does not return an `ArrayList` object but an array of Strings; they are different. Just declare a new input parameter to your method `String[] tokens` and use it to your code. — Lefteris008, May 11 '16 at 07:04

score 1 · Accepted Answer · answered May 11 '16 at 07:05

1

Just use this:

Anotherclass.findName(Anotherclass.Tokenize(input));

answered May 11 '16 at 07:05

But it is not giving any output of the findName method. why is that? – smoothsipai May 11 '16 at 08:08
Is there a way I can use tokens[] in the findName method itself? – smoothsipai May 11 '16 at 08:10
You can change the return type of findName from void to Span Array i.e Span[] and then you can use that array and make a for loop in main method do whatever you want to do with it. – May 11 '16 at 09:44

score 1 · Answer 2 · answered May 11 '16 at 07:09

1

You have to re-use your 1st method result into the 2nd one.

public class Main{
     public static void main( String[] args) throws Exception
     {
         String[] tokens = Anotherclass.Tokenize(input);
         Anotherclass.findName(tokens);

     }
}

You still have to figure out where does your input variable comes from.

answered May 11 '16 at 07:09

It is not giving any output of findName method. why is that? – smoothsipai May 11 '16 at 08:08
Is there a way I can use tokens[] in the findName method itself? – smoothsipai May 11 '16 at 08:10

score 0 · Answer 3 · answered May 11 '16 at 07:07

0

you created static method so you can call those method by Class name like

String[] SAMPLEARRAY = YOURCLASSNAME.Tokenize(String_ARRAY);

answered May 11 '16 at 07:07

KhAn SaAb

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How to pass the ArrayList between methods and classes?

3 Answers3