Java Utililty Methods Random Char

char createRandomChar()
create Random Char

return (char) ('a' + (Math.random() * ('z' - 'a')));

String getRandomChar()
get Random Char

Random random = new Random();
String[] s = { "A", "B", "C", "D", "E", "F", "G", "H", "J", "K", "L", "M", "N", "P", "Q", "R", "S", "T",
 "U", "V", "W", "X", "Y", "Z" };
String rand = "";
if (random.nextBoolean()) {
 rand = String.valueOf(random.nextInt(10));
} else {
 int index = random.nextInt(25);
...

char getRandomChar()
get Random Char

int value = getRandom().nextInt(94) + 32;
char c = (char) ((value == 34 || value == 39 || value == 92) ? value + (getRandom().nextBoolean() ? 1 : -1)
 : value);
return c;

String getRandomChar()
get Random Char

Random i = new Random();
return chars[i.nextInt(chars.length)];

char getRandomChar(boolean number, boolean lower, boolean upper, boolean other, String extra, Random _random)
Von http://www.jswelt.de/showsource.php?id=1123706440

String charSet = extra;
if (number == true)
 charSet += numberCharacters;
if (lower == true)
 charSet += lowerCharacters;
if (upper == true)
 charSet += upperCharacters;
if (other == true)
...

String getRandomChar(int size)
Description:

StringBuilder sb = new StringBuilder();
for (int i = 0; i < size; i++) {
 switch (RANDOM.nextInt(10) % 3) {
 case 0:
 sb.append((char) ('0' + RANDOM.nextInt(10)));
 break;
 case 1:
 sb.append((char) ('a' + RANDOM.nextInt(26)));
...

char getRandomChar(int x)
Gets random char.

Random r = new Random();
char c = '0';
switch (x) {
case 0:
 c = (char) (r.nextInt(10) + 48); 
 break;
case 1:
 c = (char) (r.nextInt(26) + 97); 
...

char getRandomChar(int[][] ranges, char differentThen, boolean caseSensitive, Random random)
Get a random char in given ranges, different than given char

ArrayList<Character> chars = getAllCharsInRange(ranges);
if (differentThen != ' ') {
 if (caseSensitive) {
 chars.remove(new Character(differentThen));
 } else {
 chars.remove(new Character((char) ((differentThen + "").toUpperCase().charAt(0))));
 chars.remove(new Character((char) ((differentThen + "").toLowerCase().charAt(0))));
int index = getRandomInt(0, chars.size() - 1, random);
return chars.get(index);

String getRandomChar(Random random, boolean upper)
get Random Char

int r = random.nextInt(26);
return upper ? "" + (char) ((int) 'A' + r) : "" + (char) ((int) 'a' + r);

char getRandomChar(Random random, int type)
The next two methods are used to generate the random password for the self-signed certificate.

char generatedChar;
int next = random.nextInt();
int d;
switch (type) {
case 0:
 d = next % 10;
 if (d < 0) {
 d = d * -1;
...