java - RegExp and MatchResult in GWT returns only first match -

i trying use regexp , matchresult in gwt. returns first occurrence in word. need have 3 "g", "i", "m". tried "gim" global, multiline , case insensitive. not working. please find code below. in advance.

the expected output is, should find 3 matches of "on" in "on condition" irrespective of case.

import com.google.gwt.regexp.shared.matchresult; import com.google.gwt.regexp.shared.regexp;  public class patternmatchingingxt {  public static final string dtovalue = "on condition"; public static final string searchterm = "on";  public static void main(string args[]){     string newdtodata = null;     regexp regexp = regexp.compile(searchterm, "mgi");     if(dtovalue != null){         matchresult matcher = regexp.exec(dtovalue);         boolean matchfound = matcher != null;         if (matchfound) {             (int = 0; < matcher.getgroupcount(); i++) {                 string groupstr = matcher.getgroup(i);                 newdtodata = matcher.getinput().replaceall(groupstr, ""+i);                 system.out.println(newdtodata);             }         }     }   } } 

if need collect matches, run exec until no match.

to replace multiple occurrences of search term, use regexp#replace() pattern wrapped capturing group (i not make $& backreference whole match work in gwt).

change code follows:

if(dtovalue != null){      // display matches     regexp regexp = regexp.compile(searchterm, "gi");     matchresult matcher = regexp.exec(dtovalue);     while (matcher != null) {          system.out.println(matcher.getgroup(0));  // print match value (demo)         matcher = regexp.exec(dtovalue);      }      // wrap searchterm occurrences 1 , 0     regexp regexp1 = regexp.compile("(" + searchterm + ")", "gi");     newdtodata = regexp1.replace(dtovalue, "1$10");     system.out.println(newdtodata);     // => 1on0 c1on0diti1on0 } 

note m (multiline modifier) affects ^ , $ in pattern, thus, not need here.