Question

In j2me, I have edit-field which takes its input, in it we can enter 3 digits.

When I enter first and third, leaving 2nd digit empty,

How to remove empty digit?

Answer 1

You can create a replaceAll method like this:

public static String replaceAll(String text, String searchString, String replacementString) {
        StringBuffer sBuffer = new StringBuffer();
        int pos = 0;
        while ((pos = text.indexOf(searchString)) != -1) {
            sBuffer.append(text.substring(0, pos) + replacementString);
            text = text.substring(pos + searchString.length());
        }
        sBuffer.append(text);
        return sBuffer.toString();
    }

Then you can call it this way:

text = replaceAll(text, " ", "");