removing words from a string in java

Question

Could anyone tell me what is wrong in my code?

I am trying to pass a string to function removeWords() and this function removes some information from the String.

For example if I pass:

"I Have a Headach"

the function should return:

"Headach"

However, my function is not working:

public class WordChosen extends Activity {

    private TextView wordsList;
    private String symptom;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_word_chosen);

        //Getting String from VoiceRecognition Activity and displaying it

        Intent intent = getIntent();
        String wordChosen = intent.getExtras().getString("wordChosen");

        //casting the string with TextView to display the result
        wordsList = (TextView) findViewById(R.id.wordChosen);

        Log.v("Word List:", "+++++"+wordChosen);
        //Setting text to be displayed in the textView

        removeWords(wordChosen);
        Log.v("removewords:", "------- message is displayed");



    }

    public void removeWords(String wordList)
    {
        ArrayList<String> stopList = null;
        stopList.add("i");
        stopList.add("have");
        stopList.add("a");

        ArrayList<String> result = new ArrayList<String>(Arrays.asList(wordList.split(" ")));
        for(int i=0; i<result.size();i++)
        {
            for(int j=0; j<stopList.size();j++)
            {

                if (result.get(i).equals(stopList.get(j))) { 
                    break;
                } 
                else { 

                   if(j==stopList.size()-1)
                    {

                       wordsList.setText(result.get(i));

                     }
                   }
                }
            }

        }
}

Strings are immutable. You will need to return a new String from your method. — GriffeyDog
– GriffeyDog, Commented Oct 8, 2013 at 20:05
If you want to delete specific words from your string, this answer should help you. — Sufian
– Sufian, Commented Oct 23, 2014 at 6:40

Melih Altıntaş · Accepted Answer · 2013-10-08 20:18:14Z

12

public static void main(String[] args) {
    String word = "I Have a Headach";
    String remove = "I Have a ";
    System.out.println(removeWords(word, remove));
}

public static String removeWords(String word ,String remove) {
    return word.replace(remove,"");
}

output : Headach

edited Oct 8, 2013 at 20:18

answered Oct 8, 2013 at 20:09

Melih Altıntaş

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2 Comments

AndyPerfect Over a year ago

While I guess this technically offers an alternative solution to the question asked, it has limited scope and probably isn't too helpful to OP.

Sufian Over a year ago

@AndyPerfect correct. A much better answer (to remove multiple words from string) can be found here.

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