Java - How to convert a String to title case format?

Java String Manipulation Java 

Following example shows how to convert a given string to title case string:

package com.logicbig.example;

import java.util.Arrays;

public class StringTitleCase {

    public static String toTitleCase(String input) {
        if (input == null) {
            return null;
        }
        if (input.length() == 0) {
            return input;
        }
        StringBuilder sb = new StringBuilder();
        Arrays.stream(input.split("\\s+"))
              .forEach(s -> sb.append(Character.toTitleCase(s.charAt(0)))
                              .append(s.substring(1))
                              .append(" "));
        return sb.toString().trim();
    }

    public static void main(String[] args) {
        String s = toTitleCase("the  quantum computers");
        System.out.println(s);
    }
}

The Quantum Computers