Hello I have a question from starting out with java 6th edition on chapter 9 pro

Question

Hello I have a question from starting out with java 6th edition on chapter 9 programming challenge 3 (3PC) I copied the program that was their to see if it was correct but when I ran it and put " hello. my name is joe. what is your name?" as an input it came out "Hello. My Name Is Joe. What Is Your Name?" everything was capitalized.

The problem asks to create a program that capitalizes only the first letter in each sentence not every word . so I was asking if you can help me with the solution to this program.

I may have inputted it wrong also I didn't know what symbol that was at the while statement within the while statement that says while(i < temp.length() && temp.charAt(i) == ' ') i didnt know what the ' ' was if you see the solution in the cheggs textbook solutions

basically im asking for a program that capitalizes the first letter of each sentance. not every word of each sentance.

thank you for your time

this is what i have so far from the textbook solution and everything comes out first letter capitalized

import javax.swing.JOptionPane; //importing JOptionPane
public class sentanceCapitalizer
{
    public static void main(String[] args) //main function
    {
        String input; //declaring string variable
        int words; //declaring int variable
        //inputting string
        input=JOptionPane.showInputDialog("Enter string: ");
        JOptionPane.showMessageDialog(null, sentanceCap(input));
        System.exit(0); //exitting program
    }
    public static String sentanceCap(String str)
    {
        //Loop variable
        int i;
        StringBuilder temp = new StringBuilder(str);
        //capitalizes the first letter
        if(temp.length() > 0)
        temp.setCharAt (0, Character.toUpperCase(temp.charAt(0)));
        //get the of the first period followed by a space
        i = temp.indexOf(" ");
        while(i!=-1)
        {
            //increments i up by one
            i++;
            //find the first character
            while(i < temp.length() && temp.charAt(i) == ' ')
            i++;
            //capitalize the character
            temp.setCharAt(i, Character.toUpperCase(temp.charAt(i)));
            i = temp.indexOf(" ", i);
        }
        return temp.toString();
    }
}

Explanation / Answer

Hi, I have modified the given program such that it only capatilize first letter of each sentence.

import javax.swing.JOptionPane; //importing JOptionPane

public class sentenceCapatilize

{

   public static void main(String[] args) //main function

   {

       String input; //declaring string variable

       int words; //declaring int variable

       //inputting string

       input=JOptionPane.showInputDialog("Enter string: ");

       JOptionPane.showMessageDialog(null, sentanceCap(input));

       System.exit(0); //exitting program

   }

   public static String sentanceCap(String str)

   {

       //Loop variable

       int i;

       StringBuilder temp = new StringBuilder(str);

       //capitalizes the first letter

       if(temp.length() > 0)

           temp.setCharAt (0, Character.toUpperCase(temp.charAt(0)));

       //get the of the first period followed by a space

       i = temp.indexOf(".");

       while(i!=-1)

       {

           //increments i up by one

           i++;

           //find the first character

           while(i < temp.length() && temp.charAt(i) == ' ')

               i++;

           //capitalize the character

           if(i < temp.length())

               temp.setCharAt(i, Character.toUpperCase(temp.charAt(i)));

           i = temp.indexOf(".", i);

       }

       return temp.toString();

   }

}

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