Question

Write a Java program that that capitalizes all first letters of the words in the given String. All other symbols should be intact. If a word does not start with a letter, it should remain intact as well. Assume that the parameter String can only contain spaces and alphanumeric characters.

Example:

Input: “100 234 jus 23 jskl”

Output: “100 234 Jus23 jskl”

Answer 1

Coding

    import java.util.Scanner;
    class first
    {
  
   public static String ConvertoCapitlize(String givenString)//here is the function
{
    String[] arr = givenString.split(" ");
    StringBuffer sb = new StringBuffer();
   int j=0,dig=0;
   int i=0;
   try {
      for (i = 0; i < arr.length; i++) {
   boolean flag=false;
   char ch=arr[i].charAt(0);
   if(Character.isDigit(ch)==true)
   {
       flag=true;
       j=0;
       dig=0;
       for (char c : arr[i].toCharArray())
       {

           if(Character.isDigit(c))
           {
           dig++;
           }
           else
           {
           break;
           }
           j++;
       }
  
   sb.append(arr[i].substring(0,j)).append(Character.toUpperCase(arr[i].charAt(j)))
            .append(arr[i].substring(j+1)).append(" ");
   }
   else if(Character.isDigit(ch)==false && flag==false)
   {
   sb.append(Character.toUpperCase(arr[i].charAt(0)))
            .append(arr[i].substring(1)).append(" ");
   }
   else{
   sb.append(arr[i].charAt(0))
            .append(arr[i].substring(1)).append(" ");
   }
    }
   }
        catch(ArrayIndexOutOfBoundsException e){
        System.out.println("Warning: ArrayIndexOutOfBoundsException");
       }
     catch(Exception e){

     }      
    return sb.toString().trim();
}
       public static void main(String args[])
       {
          String s,s1;//here is the declare variable
          Scanner in = new Scanner(System.in);//get user input from user
          System.out.println("Enter a string");
          s = in.nextLine();
          System.out.println("You entered string " + ConvertoCapitlize(s));//convert it to capitilize function
       }
    }

output:

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