Java Program to Capitalize the first character of each word in a String

Example 1: Java program to make the first letter of a String capital

 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); } }

Output

 Name: Programiz 

In the example, we have converted the first letter of the string name to upper case.

Example 2: Convert every word of a String to uppercase

 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); } }

Output

 Message: Everyone Loves Java

Here,

• we have created a string named message
• we converted the string into a char array
• we access every element of the char array
• if the element is a white space, we convert the next element into uppercase