Check out example codes for "how to capitalize the first letter of each word in a sentence java". It will help you in understanding the concepts better.

Code Example 1

// Java program to convert first character 
// uppercase in a sentence 
class GFG { 
  
    static String convert(String str) 
    { 
  
        // Create a char array of given String 
        char ch[] = str.toCharArray(); 
        for (int i = 0; i < str.length(); i++) { 
  
            // If first character of a word is found 
            if (i == 0 && ch[i] != ' ' ||  
                ch[i] != ' ' && ch[i - 1] == ' ') { 
  
                // If it is in lower-case 
                if (ch[i] >= 'a' && ch[i] <= 'z') { 
  
                    // Convert into Upper-case 
                    ch[i] = (char)(ch[i] - 'a' + 'A'); 
                } 
            } 
  
            // If apart from first character 
            // Any one is in Upper-case 
            else if (ch[i] >= 'A' && ch[i] <= 'Z')  
  
                // Convert into Lower-Case 
                ch[i] = (char)(ch[i] + 'a' - 'A');             
        } 
  
        // Convert the char array to equivalent String 
        String st = new String(ch); 
        return st; 
    } 
  
    public static void main(String[] args) 
    { 
        String str = "gEEks fOr GeeKs"; 
        System.out.println(convert(str)); 
    }

Learn ReactJs, React Native from akashmittal.com