Java 将字符串中每个单词的第一个字符大写的程序

class Main {
  public static void main(String[] args) {
    // create a string
    String name = "programiz";
    // create two substrings from name
    // first substring contains first letter of name
    // second substring contains remaining letters
    String firstLetter = name.substring(0, 1);
    String remainingLetters = name.substring(1, name.length());
    // change the first letter to uppercase
    firstLetter = firstLetter.toUpperCase();
    // join the two substrings
    name = firstLetter + remainingLetters;
    System.out.println("Name: " + name);
  }
}

Name: Programiz 

class Main {
  public static void main(String[] args) {
    // create a string
    String message = "everyone loves java";
    // stores each characters to a char array
    char[] charArray = message.toCharArray();
    boolean foundSpace = true;
    for(int i = 0; i < charArray.length; i++) {
      // if the array element is a letter
      if(Character.isLetter(charArray[i])) {
        // check space is present before the letter
        if(foundSpace) {
          // change the letter into uppercase
          charArray[i] = Character.toUpperCase(charArray[i]);
          foundSpace = false;
        }
      }
      else {
        // if the new character is not character
        foundSpace = true;
      }
    }
    // convert the char array to the string
    message = String.valueOf(charArray);
    System.out.println("Message: " + message);
  }
}

Message: Everyone Loves Java