class RunThread extends Thread {
    ResultSet rs;
    public RunThread(ResultSet rs) {this.rs = rs;}
    public void run() {
        while (true) {
            synchronized(rs) {
                if (rs.next()) {
                    //get data from rs
                } else {
                    break;
                }
            }
            //do something with your date
            yield();
        }
    }
}
//主程序
ResultSet rs = get_your_resultset
Thread a = new RunThread(rs);
Thread b = new RunThread(rs);
a.start();
b.start();

------解决方案--------------------
通过一个方法截取前5000条数据和后5000条数据，然后按照下面的方式处理。
package test;

import java.util.ArrayList;
import java.util.List;

/**
  * 有10000条数据，要分批处理这10000条数据，我开了2个线程，我想第一个线程处理前5000条，第二个线程处理后5000
  * @author 0012354
  *  
  */
public class C
{
   public static void main(String[] args)
   {
       List<String> list1 = new ArrayList<String>();
       list1.add("1");list1.add("2");list1.add("3");
       List<String> list2 = new ArrayList<String>();
       list2.add("11");list2.add("22");list2.add("33");
      
       new ThreadTest(list1).start();
       new ThreadTest(list2).start();
   }
}

class ThreadTest extends Thread
{
   private List<String> list;
   public ThreadTest(List<String> list)
   {
       this.list = list;
   }
  
   public void run()
   {
       while(true)
       {
           String s = null;
           synchronized(list)
           {
               if(list.size() == 0)
               {
                   return;
               }
               s = list.remove(0);
           }
          
           s = (null == s) ? "null" : s;
           System.out.println("Thread=" + Thread.currentThread().getName()+ ", s=" + s);
       }
   }
}