Converting object value to string array

Question

so I have been trying to convert an object value to string array. basically I'm using stringtokenizer to get the strings from a text file, so I can search for specific values. I am using this library first time. so any help wold be appreciated. here is my main method

 public static void main(String[] args) {
        String[] keys = {"she","sells","sea","shells","by","the","sea","shore"};      
        In in = new In("Protein.txt");
        TST<Integer> st = new TST<Integer>();
        String text1;
        String string = "";
        String [] line1;
        while ((text1 = in.readLine()) != null) {

           String line = text1.trim();
           //System.out.println(line);

           StringTokenizer stt = new StringTokenizer(line);
           while (stt.hasMoreElements()) {
               //System.out.println(stt.nextElement());
               string = String.valueOf(stt.nextElement());
               //line1 = string.split("");
               System.out.println(string);              
           }    
        }
    }
}

No error. I am able to convert object value to string as 'string = String.valueOf(stt.nextElement());'. what I need to do is to convert object value to string array. but i don't know how to do it. I searched it but couldn't find any help — Usman Malik, Nov 22 '17 at 05:52
Ok. Are you looking for other options? Can you please elaborate more on the question? — balaaagi, Nov 22 '17 at 05:54
Yes. i can use jsoup but I don't know its working. how it converts text file into string array. — Usman Malik, Nov 22 '17 at 05:56
right now I just want to convert text file into string array. It would be very helpful if u could guide me to the right path — Usman Malik, Nov 22 '17 at 05:57
https://stackoverflow.com/a/2977109/6032482 ...................this will healp u in converting text file into string array — KishanCS, Nov 22 '17 at 05:59
An array can only take elements up-to a predefined size, you need a List to add all the token. You can then convert it into an array. — Antho Christen, Nov 22 '17 at 06:08

score 0 · Answer 1 · answered Nov 22 '17 at 06:07

0

While reading each line as strings put them in an List. We can invoke toArray after reading all the lines.

Other Options is you can use readAllLines from File Object.

answered Nov 22 '17 at 06:07

balaaagi

502
11
21

Mehraj Malik · Answer 2 · 2017-11-22T06:26:22.317

0

You can use Apache's FileUtils to work with Files.

String content = FileUtils.readFileToString(new File(fileName), StandardCharsets.UTF_8);

There are more useful methods like readLines, you can use List<String> instead String[] like below :

List<String> lines = FileUtils.readLines(new File("myfile.txt"), Charsets.UTF_8);

edited Nov 22 '17 at 06:26

answered Nov 22 '17 at 06:20

Mehraj Malik

14,872
15
58
85

Converting object value to string array

2 Answers2