voctorexam.java

java学习课件

import java.util.*;
class VectorExam
{
  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.,");
  	Vector v1=new Vector();
  	while(str1.hasMoreTokens()) //是否还有标记(单词)存在
  	{
  	  String str=str1.nextToken(); //获得一单词;
  	  if(v1.contains(str)) continue;
  	  v1.add(str);
  	  System.out.println(str);
  	}
  	System.out.println("共有"+v1.size()+"个单词");
  }
}