Java Utililty Methods String Code Point

int toCodePoint(char high, char low)
to Code Point

return (high - HIGH_SURROGATE_MIN_VALUE) * 0x400 + (low - LOW_SURROGATE_MIN_VALUE) + 0x10000;

int toCodePoint(char highSurrogate, char lowSurrogate)
to Code Point

return MIN_SUPPLEMENTARY_CODE_POINT + ((highSurrogate & 1023) << 10) + (lowSurrogate & 1023);

int toCodePoint(char[] chars)
to Code Point

return toCodePoint(chars[0], chars[1]);

int[] toCodePointArray(final String str)
to Code Point Array

if (str != null) {
 final int len = str.length();
 final int[] acp = new int[str.codePointCount(0, len)];
 for (int i = 0, j = 0; i < len; i = str.offsetByCodePoints(i, 1)) {
 acp[j++] = str.codePointAt(i);
 return acp;
return new int[0];

int[] toCodePointArray(String string)
Transforms a String to its representative array of unicode code points.

char[] sarray = string.toCharArray();
int[] result = new int[Character.codePointCount(sarray, 0, sarray.length)];
for (int i = 0, j = 0, codePoint = 0; i < sarray.length; i += Character.charCount(codePoint)) {
 codePoint = Character.codePointAt(sarray, i);
 result[j++] = codePoint;
return result;

int toCodePoints(char[] src, int srcOff, int srcLen, int[] dest, int destOff)
Converts a sequence of Java characters to a sequence of unicode code points.

if (srcLen < 0) {
 throw new IllegalArgumentException("srcLen must be >= 0");
int codePointCount = 0;
for (int i = 0; i < srcLen;) {
 final int cp = Character.codePointAt(src, srcOff + i, srcOff + srcLen);
 final int charCount = Character.charCount(cp);
 dest[destOff + codePointCount++] = cp;
...

int[] toCodepoints(String message)
to Codepoints

int[] codepoints = new int[message.length()];
for (int i = 0; i < message.length(); i++) {
 codepoints[i] = message.codePointAt(i);
return codepoints;

int[] toCodePoints(String s)
Convert the string to an array of code points.

return s.codePoints().toArray();

int[] toCodePoints(String str)
to Code Points

int count = str.codePointCount(0, str.length());
int[] codePoints = new int[count];
for (int cpIndex = 0, charIndex = 0; cpIndex < count; cpIndex++) {
 int cp = str.codePointAt(charIndex);
 codePoints[cpIndex] = cp;
 charIndex += Character.charCount(cp);
return codePoints;
...

String toCodeString(String s)
Given a string, returns a string that could be printed out in Java source code.

return "\"" + s.replace("\\", "\\\\").replace("\"", "\\\"").replace("\n", "\\n").replace("\t", "\\t")
 + "\"";