将一段英文每个单词首字母大写

     Have the function LetterCapitalize(str) take the str parameter being

      passed and capitalize the first letter of each word. Words will be separated

      by only one space.

      Use the Parameter Testing feature in the box below to test your code with

      different arguments.

 

package demo5;

import java.util.Scanner;

class Test3 {  

  public static String LetterCapitalize(String str) {

 

    str.trim();

    int wordNum=1;

    boolean flag=false;

    String str2="";

    for(int i=0;i<str.length();i++){

        char indexword=str.charAt(i);

        if(i==0 || flag==true){

         if(indexword>='a' && indexword<='z'){

            str2+=(char)(indexword-32);

        }else{

                str2+=indexword;

        }

            flag=false;

        }else if(indexword==' '){

            str2+=' ';

            flag=true;

        }else{

            str2+=indexword;

            flag=false;

        }

        

    }

    return str2;

    

  }

 

  public static void main (String[] args) {  

    // keep this function call here     

    Scanner s = new Scanner(System.in);

    System.out.print(LetterCapitalize(s.nextLine()));

  }   

 

}