我目前正在制作一个反转句子顺序的程序，但如果句子有标点符号，则需要出现在新句子的末尾。
例如：“我的名字是鲍勃。”应该成为“鲍勃是我的嗨。”
我已经编写了反转String并删除所有非单词字符所需的代码。但是，我需要知道：如何将删除的字符添加到新String的末尾。
import java.util.Scanner;
import java.util.StringTokenizer; // for splitting
public class MyTokenTester
{
public static void main(String[] args)
{
Scanner enter = new Scanner(System.in);
String sentinel = ""; // condition for do...while
String backward = ""; // empty string
do
{
System.out.println("Please enter a sentence: ");
String sentence = enter.nextLine();
String[] words = sentence.split(" "); // array words gets tokens
for (int count = words.length -1; count>=0; count--) // reverse the order and assign backward each token
{
backward += words[count].replaceAll("\\W", "") + " ";
}
System.out.println(backward); // print original sentence in reverse order
System.out.println("Hit any key to continue or type 'quit' to stop now: ");
sentinel = enter.nextLine();
sentinel = sentinel.toLowerCase(); // regardless of case
} while (!sentinel.equals("quit")); // while the sentinel value does not equal quit, continue loop
System.out.println("Programmed by ----");
} // end main
} // end class MyTokenTester