java study 001

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import java.io.BufferedReader;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;

import java.util.HashMap;
import java.util.Map;
import java.io.File;

public class teststudy {

public static void main(String[] args) {
/*
  String targer= "i am test java study, i am test java study";
  String tmp[] = targer.split(" ");
  Map<String, Integer> testMap= new HashMap<String, Integer>();
  int i;
  for(i =0 ;i<tmp.length;i++)
  {
   if(testMap.containsKey(tmp[i]))
   {
    int num=testMap.get(tmp[i]);
    testMap.put(tmp[i], ++num);
   }
   else
   {
    testMap.put(tmp[i],1);
   }
  }

  System.out.println(testMap);
  System.out.println(testMap.keySet());
  System.out.println(testMap.size());
  System.out.println(testMap.getClass());*/

  /*
  File f = new File(".");
  File[] filelist = f.listFiles();
  int i = 0;
  for(i = 0; i< filelist.length; i++)
  {
   if(filelist[i].isDirectory())
   {
    System.out.println("dir"+filelist[i]);
   }
   if(filelist[i].isFile())
   {
    System.out.println("file"+filelist[i]);
   }
   else
   {
    System.out.println("1111111111111");
    System.out.println(filelist[i]);
   }
  }*/
  /*
  File creatfile = new File("a..txt");
  if(creatfile.exists() && creatfile.isFile())
  {
   creatfile.delete();
  }
  creatfile.createNewFile();
  if(creatfile.canRead())
  {
   BufferedReader bf = new BufferedReader(new FileReader(creatfile));
   String str = bf.readLine();
   System.out.println(str);
  }*/

   long min=10000;

   testThread testth = new testThread(min);

   testth.run();

   System.out.println("main says:"+ min--);
}

}

class testThread extends Thread
{

long min;
public testThread(long min)
{
  this.min = min;
}

public void run()
{
  for(int i=0 ; i< min; i++)
  {
  if(min%2 ==0)
  {
   System.out.println("thread1 say:"+min);
  }
  else
  {
   min--;
  }
  }

}

}