// Generates new password by build each part and storing it in arrayList
public static String generateNewPassword(boolean l, boolean u, boolean n, boolean s, int len) {
ArrayList<Integer> cs = new ArrayList<Integer>();
if (l) {
for (int i = 0; i < 26; i++) {
cs.add(97 + i);
}
}
if (u) {
for (int i = 0; i < 26; i++) {
cs.add(65 + i);
}
}
if (n) {
for (int i = 0; i < 10; i++) {
cs.add(48 + i);
}
}
if (s) {
for (int i = 0; i < 10; i++) {
cs.add(33 + i);
}
for (int i = 0; i < 7; i++) {
cs.add(58 + i);
}
for (int i = 0; i < 6; i++) {
cs.add(91 + i);
}
for (int i = 0; i < 4; i++) {
cs.add(123 + i);
}
}
StringBuilder sb = new StringBuilder();
for (int i = 0; i < len; i++) {
sb.append(Character.toChars(cs.get((int) (Math.random() * cs.size()))));
}
return sb.toString();
}
/**
* Appends the encoded Unicode code point. The code point is converted to a {@code char[]} as
* defined by {@link Character#toChars(int)}.
*
* @param codePoint the Unicode code point to encode and append.
* @return this builder.
* @see Character#toChars(int)
*/
public StringBuilder appendCodePoint(int codePoint) {
append0(Character.toChars(codePoint));
return this;
}