I am finding the string in between 123 and 321 and making it as bold. For that I used the Pattern to get the string before 123, text between 123 and 321 and text after 321. Could anyone please help me get all the strings between 123 and 321.

Pattern p = Pattern.compile("^.*?(123)");
                            Matcher m = p.matcher(meredithEditorialSectionSegment);
                            while (m.find()) {
                                String desc = m.group();
                                String segDesc = (desc.substring(0, desc.length() - 3));
                                segmentDesc.add(new Chunk(segDesc, sectionDescriptionFont));
                            }
                        descBold =  meredithEditorialSectionSegment.substring(meredithEditorialSectionSegment.indexOf("123") + 3);
                        descBold = descBold.substring(0, descBold.indexOf("321"));
                        segmentDesc.add(new Chunk(descBold, sectionDescriptionBoldFont));

                         Matcher matcher = Pattern.compile("(?<=321).*").matcher(meredithEditorialSectionSegment);
                         matcher.find();
                         segmentDesc.add(new Chunk(matcher.group(), sectionDescriptionFont));