import java.io.*; 
 public class Welcome
 {
     public static void main(String args[])throws IOException
     {
         BufferedReader br=new BufferedReader(new FileReader("1.txt"));
         BufferedWriter bw=new BufferedWriter(new FileWriter("2.txt"));
         StreamTokenizer st=new StreamTokenizer(br);
         st.whitespaceChars(0, 32);
         st.eolIsSignificant(true);
         int tokenType;
         while(br.ready())
         {
             tokenType=st.nextToken();
             switch(tokenType)
             {
                 case st.TT_NUMBER://这里报错，说例表达式必须是常量表达式，但不知道应该怎么改
                     bw.write(String.valueOf((long)st.nval));
                     bw.newLine();
                     break;
                 case st.TT_WORD://同上
                     bw.write(st.sval);
                     bw.newLine();
                     break;
             }
         }
         bw.close();
    }
 }