java 分割

import java.util.*;
import java.util.regex.*;


public class Split {
    public static void main(String[] args)
    {
        String str = "    a    b    c    d                            ";
        Pattern p = Pattern.compile("	");
        
        Matcher m = p.matcher(str);
        
        //保存结果数组
        List<String> ret = new ArrayList<String>();
        //临时变量
        String temp = null;
        int index = 0;
        while(m.find())
        {
            int start = m.start();
                        
            temp = str.substring(index, start);
            ret.add(temp);
                        
            index = m.end();
            
        }
        
        System.out.println(ret);
    }
}