comparing

[Feng]

I want to check which words that i read from an input text file (one word per line) do not occur in an array of strings (that I already have in my program). I used the .equals to compare the word to every word of my array. Then when I print (everytime a word does not occur in in the array) I see e.g. 10 times (=number of elements in the array) the phrase ("The word" + fileLine+ "does not occur."). What should I do? When using arrays there is no 'boolean contains ();'

[m_srikanth]

If its an array of Strings, why dont you use String comparision. If not post sample code and it will help us to understand your problem and help u.

[hardwired]

Code:

import java.io.*;
import java.util.*;

public class ComparingStrings {
    static String[] words = {
        "green", "blue", "cyan", "magenta", "orange", "black"
    };

    public static void main(String[] args) {
        String path = "wordsToRead.txt";
        StringBuilder sb = new StringBuilder();
        try {
            Scanner scanner = new Scanner(new File(path));
            while(scanner.hasNextLine()) {
                sb.append(scanner.nextLine() + " ");
            }
            scanner.close();
        } catch(FileNotFoundException e) {
            System.out.println("File not found " + e.getMessage());
        }
        String[] fileWords = sb.toString().split("\\s");
        String[] extraWords = getNewWords(fileWords);
        System.out.printf("extra words = %s%n", Arrays.toString(extraWords));
    }

    private static String[] getNewWords(String[] allWords) {
        List<String> newWords = new ArrayList<String>();
        for(int j = 0; j < allWords.length; j++) {
            if(!isInWords(allWords[j]) && !newWords.contains(allWords[j]))
                newWords.add(allWords[j]);
        }
        return newWords.toArray(new String[newWords.size()]);
    }

    private static boolean isInWords(String s) {
        for(int j = 0; j < words.length; j++) {
            if(words[j].equals(s))
                return true;
        }
        return false;
    }
}