Java Utililty Methods String Reverse

int compareVersion(String va, String vb)
Compare version number, the format of version number should be X.X.X style.

String[] vas = va.split("\\."); 
String[] vbs = vb.split("\\."); 
List<String> vaList = new ArrayList<String>();
for (int i = 0; i < vas.length; i++) {
 vaList.add(vas[i].trim().equals("") ? "0" : vas[i]); 
List<String> vbList = new ArrayList<String>();
for (int i = 0; i < vbs.length; i++) {
...

String getReverseShelfKey(String shelfkey)
given a shelfkey (a lexicaly sortable call number), return the reverse shelf key - a sortable version of the call number that will give the reverse order (for getting "previous" call numbers in a list)

StringBuilder resultBuf = new StringBuilder(reverseDefault);
if (shelfkey != null && shelfkey.length() > 0)
 resultBuf.replace(0, shelfkey.length(), reverseAlphanum(shelfkey));
return resultBuf.toString();

String reverse(String aPackage)
reverse

StringTokenizer tok = new StringTokenizer(aPackage, ".");
String ans = tok.nextToken();
while (tok.hasMoreTokens()) {
 ans = tok.nextToken() + "." + ans;
return ans;

String reverse(String s)
Reverse a string

return new StringBuilder(s).reverse().toString();

String reverse(String text)
reverse

char[] chars = text.toCharArray();
ArrayList<Character> list = new ArrayList<>();
for (int i = chars.length - 1; i >= 0; i--) {
 list.add(chars[i]);
int size = list.size();
chars = new char[size];
for (int i = 0; i < size; i++) {
...

String reverse(String word)
reverse

char[] chars = word.toCharArray();
int size = word.length();
for (int li = 0, ri = size - 1; li < ri; li++, ri--) {
 char swap = chars[li];
 chars[li] = chars[ri];
 chars[ri] = swap;
return new String(chars);
...

String reverseCommaDelimitedString(final String string)
Reverses a string which consists of comma-separated items.

final List<String> items = new ArrayList<>();
final int string_len = string.length();
int index = 0;
for (int i = 0; i < string_len; i++) {
 final char ch = string.charAt(i);
 if (ch == ',') {
 if (i > index) {
 items.add(string.substring(index, i).trim());
...

String reverseDelimited(String str, char separatorChar)
reverse Delimited

if (str == null) {
 return null;
String[] strs = split(str, separatorChar);
reverseArray(strs);
return join(strs, separatorChar);

String reverseUseSB(String str)
reverse Use SB

String result = new StringBuffer(str).reverse().toString();
return result;