How to capitalize the first letter of word in a string using Java?

Question

Example strings

one thousand only
two hundred
twenty
seven

How do I change the first character of a string in capital letter and not change

Answer 1

public String capitalizeFirstLetter(String original) {
    if (original == null || original.length() == 0) {
        return original;
    }
    return original.substring(0, 1).toUpperCase() + original.substring(1);
}

Just... a complete solution, I see it kind of just ended up combining what everyone else ended up posting =P.

Answer 2

class Test {
     public static void main(String[] args) {
        String newString="";
        String test="Hii lets cheCk for BEING String";  
        String[] splitString = test.split(" ");
        for(int i=0; i<splitString.length; i++){
            newString= newString+ splitString[i].substring(0,1).toUpperCase() 
                    + splitString[i].substring(1,splitString[i].length()).toLowerCase()+" ";
        }
        System.out.println("the new String is "+newString);
    }
 }

Answer 3

Its simple only one line code is needed for this. if String A = scanner.nextLine(); then you need to write this to display the string with this first letter capitalized.

System.out.println(A.substring(0, 1).toUpperCase() + A.substring(1));

And its done now.

Answer 4

My functional approach. its capstilise first character in sentence after whitescape in whole paragraph.

For capatilising only first character of the word just remove .split(" ")

           b.name.split(" ")
                 .filter { !it.isEmpty() }
                 .map { it.substring(0, 1).toUpperCase() 
                 +it.substring(1).toLowerCase() }
                  .joinToString(" ")

Answer 5

Given the input string:

Character.toUpperCase(input.charAt(0)) + input.substring(1).toLowerCase()

Answer 6

The following will give you the same consistent output regardless of the value of your inputString:

if(StringUtils.isNotBlank(inputString)) {
    inputString = StringUtils.capitalize(inputString.toLowerCase());
}