The Character Class

Individual characters are represented in Java by the primitive char type. The Java
platform also defines a Character class, which defines useful class methods for checking the type of a character and for converting the case of a character

char[] text = new char[]{'j','a','v','a'}; // An array of characters, initialized somewhere else

int p = 0; // Our current position in the array of characters

// Skip leading whitespace

while((p < text.length) && Character.isWhitespace(text[p])) p++;

  // Capitalize the first word of text

  while((p < text.length) && Character.isLetter(text[p])) {

  text[p] = Character.toUpperCase(text[p]);

  p++;

}