Java 实例 反转String中的单词

public class Example
{
   public void reverseWordInMyString(String str)
   {
    /* The split() method of String class splits
     * a string in several strings based on the
     * delimiter passed as an argument to it
     */
    String[] words = str.split(" ");
    String reversedString = "";
    for (int i = 0; i < words.length; i++)
        {
           String word = words[i]; 
           String reverseWord = "";
           for (int j = word.length()-1; j >= 0; j--) 
       {
        /* The charAt() function returns the character
         * at the given position in a string
         */
        reverseWord = reverseWord + word.charAt(j);
       }
       reversedString = reversedString + reverseWord + " ";
    }
    System.out.println(str);
    System.out.println(reversedString);
   }
   public static void main(String[] args) 
   {
    Example obj = new Example();
    obj.reverseWordInMyString("Welcome to BeginnersBook");
    obj.reverseWordInMyString("This is an easy Java Program");
   }
}

Welcome to BeginnersBook
emocleW ot kooBsrennigeB 
This is an easy Java Program
sihT si na ysae avaJ margorP