public class StringBufferTest {
   private StringBuffer contents = new StringBuffer();
   public  void  log(String message){
      contents.append(System.currentTimeMillis());
      contents.append("; ");
      contents.append(Thread.currentThread().getName());
      for(int i=0;i<10000;i++){
         contents.append(i);
          contents.append(message);
          contents.append("\n");
      }

      contents.append("\n\n\n");
   }
   public  void getContents(){
      System.out.println(contents);
   }
}

class RunThread extends Thread{
   String message;
   StringBufferTest buffer;
   public RunThread(StringBufferTest buffer, String message){
      this.buffer = buffer;
      this.message = message;
   }
   public void run(){
      while(true){
         buffer.log(message);
         buffer.getContents();
      }
   }
   public static void main(String[] args) {
      StringBufferTest ss = new StringBufferTest();
      new RunThread(ss, "love").start();
      new RunThread(ss, "make").start();
      new RunThread(ss, "you").start();
   }
}