Java Utililty Methods ID Value Create

List of utility methods to do ID Value Create

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Description

The list of methods to do ID Value Create are organized into topic(s).

Method

StringgenerateSalt()
generate Salt 
StringBuilder builder = new StringBuilder();
Random random = new Random();
final char[] chars = "AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz+/1234567890".toCharArray();
for (int i = 0; i < 32; i++) {
    builder.append(chars[random.nextInt(chars.length)]);
return builder.toString();
StringgenerateSalt()
Generates a random string 
return Long.toHexString(new Random(System.nanoTime()).nextLong());
StringgenerateSalt()
Return a randomly-generated 16 character alphanumeric value (a-z, A-Z, 0-9) 
String validChars = "abcdefghijlmnopqrstuvwxyzABCDEFGHIKJLMNOPQRSTUVWXYZ0123456789";
int length = 16;
Random rand = new Random();
StringBuilder sb = new StringBuilder(length);
while (sb.length() != length)
    sb.append(validChars.charAt(rand.nextInt(validChars.length())));
return sb.toString();
StringgenerateUniqueId()
generate Unique Id 
StringBuilder sb = new StringBuilder(UNIQUEID_DEFAULTSIZE);
Random random = new Random();
for (int i = 0; i < UNIQUEID_DEFAULTSIZE; i++) {
    sb.append(UNIQUEID_LETTERS.charAt(random.nextInt(UNIQUEID_LETTERS.length())));
return sb.toString().toLowerCase(Locale.US);
StringgenerateUniqueId()
generate Unique Id 
long curTime = System.currentTimeMillis();
int random = secureRand.nextInt();
if (random < 0) {
    random = -random;
return Long.toString(curTime, Character.MAX_RADIX) + Integer.toString(random, Character.MAX_RADIX);
StringgenerateUniqueIdentity()
generate Unique Identity 
StringBuilder builder = new StringBuilder();
for (int j = 0; j < 2; j++) {
    for (int i = 0; i < 4; i++) {
        builder.append(nextChar());
    if (j == 0) {
        builder.append('-');
return builder.toString();
StringgenerateUniqueName(String kind)
generate Unique Name 
return String.format("%s%d", kind, new Random().nextInt());
StringgenerateUniqueString(int maxLength)
generate Unique String 
String str = String.valueOf(Math.abs(new Random().nextLong()));
if (maxLength < str.length())
    return str.substring(0, maxLength);
else
    return str;
StringtoId(String id)
to Id 
String fixStart = id;
if (!Character.isJavaIdentifierStart(fixStart.charAt(0))) {
    fixStart = "_" + fixStart;
fixStart = fixStart.replaceAll("_", "__");
StringBuilder result = new StringBuilder();
char[] cs = fixStart.toCharArray();
for (char c : cs) {
...
StringtoId(String name)
Convert a normal name with spaces into an Id: with underscores replacing the spaces, etc. 
if (name == null) {
    return name;
name = name.replaceAll("[ .,:(){}\\[\\]]", "_"); 
name = name.replaceAll("[\"`']", ""); 
name = name.replaceAll("[*]", "_TIMES_"); 
name = name.replaceAll("[/]", "_DIVIDED_BY_"); 
name = name.replaceAll("[+]", "_PLUS_"); 
...