How to add elements into java string array?

Question

I open a file and want to put the contents in a string array. I tried as below.
String[] names;
s = new Scanner(new BufferedReader(new FileReader("outfile.txt")));
while (s.hasNext()) {
                String item = s.next();
                item.trim();
                email = item;
                names = email;
            }But I know that this is a wrong way of adding elements into my string array names []. How do I do it? Thanks.

Answer 1

Actually you cannot increase the size of a String array. But you can create a temp array with the lengt = lengthofarray+1 and use arraycopy method to copy all elements to new array, then you can assign the value of string at the end of the temp array
I would use this one:
String [] sArray = null;
s = new Scanner(new BufferedReader(new FileReader("outfile.txt")));
while (s.hasNext()) {
    String item = s.next();
    item.trim();
    email = item;
    sArray = addToStringArray(sArray, email);
* Method for increasing the size of a String Array with the given string.
* Given string will be added at the end of the String array.
* @param sArray String array to be increased. If null, an array will be returned with one element: String s
* @param s String to be added to the end of the array. If null, sArray will be returned.(No change)
* @return sArray increased with String s
public String[] addToStringArray (String[] sArray, String s){
     if (sArray == null){
          if (s!= null){
               String[] temp = {s};
               return temp;
          }else{
               return null;
     }else{
          if (s!= null){
               String[] temp = new String[sArray.length+1];
               System.arraycopy(sArray,0,temp,0,sArray.length);
               temp[temp.length-1] = s;
               return temp;
          }else{
               return sArray;
}Edited by: mimdalli on May 4, 2009 8:22 AM
Edited by: mimdalli on May 4, 2009 8:26 AM
Edited by: mimdalli on May 4, 2009 8:27 AM