How to delete Spaces in String

Question

Can somebody help to modify my source, cos i want to delete certain space. Thanks
private static String printStar(int SpaceForStar){
    String sDelOneSpace =" ", sAddOneSpace=" ", star ="*", sTtlSpace ="";
    for(int i=0; i<numSpace; i++){
      sTtlSpace += sAddOneSpace;    
    for(int i =0; i<8; i++){
      sTtlSpace = sTtlSpace - sDelOneSpace;   // seem that not working.. can somebody help Thanks
    return sTtlSpace+star;
  }Thanks in advance
jas

Answer 1

What you are trying to do will not work - subtraction of Strings does not make any sense.
To remove spaces, I suggest you use a StringTokenizer with space as dividing token. Lop trough the tokens and add them to a new String, like this:
    public static void main (String[] args) throws Exception {
        String withSpace = "aaa sss bbb";
        System.out.println(removeSpaces(withSpace));
    static String removeSpaces(String withSpaces) {
        java.util.StringTokenizer t = new java.util.StringTokenizer(withSpaces, " ");
        StringBuffer result = new StringBuffer("");
        while (t.hasMoreTokens()) {
            result.append(t.nextToken());
        return result.toString();
    }This will remove all spaces, and print "aaasssbbb". If you only want to remove the first or the last space, you can use indexOf() or lastIndexOff to find the space, and then substring to pick the text before and after that space and concatenate those two strings to a new string without the space:
    static String removeFirstSpace(String withSpaces) {
        int spaceIndex = withSpaces.indexOf(' '); //use lastIndexOf to remove last space
        if (spaceIndex < 0) { //no spaces!
            return withSpaces;
        return withSpaces.substring(0, spaceIndex)
            + withSpaces.substring(spaceIndex+1, withSpaces.length());
    }