import java.util.*;
class StringTokenzerExam
{
  public static void main(String [] args)
  {
  	StringTokenizer str1=new StringTokenizer("The String class represents character strings. All string literals in Java programs, such as \"abc\", are implemented as instances of this class."," \t\n\r\f.,");
  	int count=0;
  	while(str1.hasMoreTokens()) //是否還有標記(單詞)存在
  	{
  	  String str=str1.nextToken(); //獲得一單詞;
  	  System.out.println(str);
  	  count++;
  	}
  	System.out.println("共有"+count+"個單詞");
  }
}